Market snapshot: Oct 17, 2026, 9:00 AM UTC. Prices may have changed since this snapshot.

GroupKALSHIPOLYMARKETCross-Platform

Event GroupKALSHIPOLYMARKETCross-Platform4 EventsSports

Fluminense vs Santos: Spread

Name: Fluminense vs Santos: Spread
End: 2026-10-18T19:00:00.000Z

Reported volume

PM $2.2K · K 3.2K contracts

Events

Markets

Trade on Polymarket Trade on Kalshi

Fluminense vs Santos: Spread

Vol

PM $2.2K · K 3.2K contracts

Events

Markets

Polymarket Kalshi

Provider overview

polymarket

$2.2K

Reported lifetime volume

kalshi

3.2K contracts

Reported lifetime volume

Reviewed equivalent pairs

No eligible price comparison

Saved prices are comparisons, not executable quotes. A price difference does not establish arbitrage. Check both contracts, live order prices, fees and available size.

Price ChartContract price history

5 markets tracked

Historical observations can differ from current quotes. Kalshi points are hourly trade averages.

Saved prices are comparisons, not executable quotes. A price difference does not establish arbitrage. Check both contracts, live order prices, fees and available size.

Fluminense wins by more than 2.5 goals?

No data available

Include related or unreviewed contracts

No currently reviewed equivalent pairs with usable prices. You can inspect related contracts, but their prices do not measure the same outcome.

Market	Polymarket	Kalshi	Diff

Single-Platform Markets(2)

Rules & Resolution

Differs

Saved matching review

Related contracts: 8 pairs

A saved event match does not establish identical settlement. Pair reviews appear with each price comparison.

Review notes

Saved notes may describe earlier contract terms. Use the pair status above and current provider rules.

This is an automated contract review, not a guarantee of identical settlement or executable prices. Read both providers' full rules before relying on a comparison.

Automated review classifications: 0 equivalent, 3 related, 0 incompatible market pairs. A subset of paired outcomes does not establish equivalence of the whole event. Kalshi event: "Fluminense vs Santos". Listed deadlines for assessed markets (UTC): 2026-10-20T19:00:00.000Z. Polymarket event: "Fluminense FC vs. Santos FC". Listed deadlines for assessed markets (UTC): 2026-10-18T19:00:00.000Z. Automated review flags: differing rules reported; differing resolution sources reported.

The saved review identifies different resolution rules.

The saved review identifies different resolution sources.

Automated review classifications: 0 equivalent, 3 related, 0 incompatible market pairs. A subset of paired outcomes does not establish equivalence of the whole event. Kalshi event: "Fluminense vs Santos". Listed deadlines for assessed markets (UTC): 2026-10-20T19:00:00.000Z. Polymarket event: "Fluminense FC vs. Santos FC - Halftime Result". Listed deadlines for assessed markets (UTC): 2026-10-18T19:00:00.000Z. Automated review flags: differing rules reported; differing resolution sources reported.

Automated review classifications: 0 equivalent, 2 related, 0 incompatible market pairs. A subset of paired outcomes does not establish equivalence of the whole event. Kalshi event: "Fluminense vs Santos: Spread". Listed deadlines for assessed markets (UTC): 2026-10-20T19:00:00.000Z. Polymarket event: "Fluminense FC vs. Santos FC". Listed deadlines for assessed markets (UTC): 2026-10-18T19:00:00.000Z. Automated review flags: differing rules reported; differing resolution sources reported.

AI Analysis

Trader mode: Market mechanics, assumptions and risks

PM $2.2K · K 3.2K contracts

Reported volume · provider units

Saved contracts

Reviewed equivalent pairs

Source snapshot: Oct 17, 2026, 9:00 AM UTC

About This Event

FLU vs SAN (Oct 18) If Santos wins by more than X goals in the Fluminense vs Santos professional Brasileiro Serie A soccer game originally scheduled for Oct 18, 2026 after 90 minutes plus stoppage time, does not include extra time or penalties, then the market resolves to Yes. Kalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the Governing League. All trademarks, logos, and brand names are the property of their respective owners. This market will close and expire after a winner is declared.

AI-generated analysis based on market data. Not financial advice.

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Event: Fluminense vs Santos: Spread
Source snapshot: Oct 17, 2026, 9:00 AM UTC
Reported event volume (provider units): PM $2.2K · K 3.2K contracts
Coverage: 13 of 13 saved contracts included.
Prices are saved observations, not executable quotes. Listed close dates do not promise settlement or payout time.

Contract: Tie is the result
Provider: kalshi; ID: kalshi-KXBRASILEIROGAME-26OCT18FLUSAN-TIE; status: active
Source: https://kalshi.com/markets/kxbrasileirogame-26oct18flusan
Observed: Oct 17, 2026, 9:00 AM UTC
Listed close: Oct 20, 2026, 7:00 PM UTC
Reported volume: 34.59 contracts
Outcome Yes: 27.8%; 24h change unavailable
Outcome No: 72.2%; 24h change unavailable
Saved rules: If Tie is the result of the Fluminense vs Santos professional Brasileiro Serie A soccer game originally scheduled for Oct 18, 2026 after 90 minutes plus stoppage time (does not include extra time or penalties), then the market resolves to Yes. Secondary rules: The following market refers to the Fluminense vs Santos professional Brasileiro Serie A soccer game originally scheduled for Oct 18, 2026 after 90 minutes plus stoppage time (does not include extra time or penalties). If the game ends in a tie, the market called "Tie" resolves to Yes. If the game is cancelled or rescheduled to over 48 hours away, the market will resolve to a fair price in accordance with the rules.

Kalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the Governing League. All trademarks, logos, and brand names are the property of their respective owners. Early close condition: This market will close and expire after a winner is declared.

Contract: Will Fluminense FC vs. Santos FC end in a draw?
Provider: polymarket; ID: polymarket-5296130; status: active
Source: https://polymarket.com/event/bra-flu-san-2026-10-18-draw
Observed: Oct 17, 2026, 9:00 AM UTC
Listed close: Oct 18, 2026, 7:00 PM UTC
Reported volume: $253.2
Outcome Yes: 28.0%; 24h change unavailable
Outcome No: 72.0%; 24h change unavailable
Saved rules excerpt (truncated): In the upcoming game, scheduled for October 18, 2026
If the game ends in a draw, this market will resolve to "Yes".
Otherwise, this market will resolve to "No".
If the game is postponed, this market will remain open until the game has been completed.
If the game is canceled entirely, with no make-up game, this market will resolve to "Yes".
This market refers only to the outcome within the first 90 minutes of regular play plus stoppage time.

The primary resolution source for this market is the official statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 2 hours after the event's conclusion, data from Flashscore may be used; if Flashscore data is unavailable, data from Sofascore may be used; if neither is available, a consensus of credible reporting may be used instead. All markets will settle based on the official final result as recognized by the governing body or event organizers. Revisions to officially declared final scores made after market resolution will not be accounted for in determining the outcome. If no acceptable data is available within 24 h

Contract: Fluminense FC vs. Santos FC: Draw at halftime?
Provider: polymarket; ID: polymarket-5297456; status: active
Source: https://polymarket.com/event/bra-flu-san-2026-10-18-halftime-result-draw
Observed: Oct 17, 2026, 9:00 AM UTC
Listed close: Oct 18, 2026, 7:00 PM UTC
Reported volume: $0
Outcome Yes: 42.5%; 24h change unavailable
Outcome No: 57.5%; 24h change unavailable
Saved rules excerpt (truncated): In the upcoming game, scheduled for October 18, 2026 If the game ends in a draw within the first 45 minutes of regular play plus stoppage time, this market will resolve to "Yes". Otherwise, this market will resolve to "No". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve to "Yes". This market refers only to the outcome within the first 45 minutes of regular play plus stoppage time. The primary resolution source for this market is the official statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 2 hours after the event's conclusion, data from Flashscore may be used; if Flashscore data is unavailable, data from Sofascore may be used; if neither is available, a consensus of credible reporting may be used instead. All markets will settle based on the official final result as recognized by the governing body or event organizers. Revisions to officially declared final scores made after market resolution will not be accounted for in determini

Contract: Fluminense wins
Provider: kalshi; ID: kalshi-KXBRASILEIROGAME-26OCT18FLUSAN-FLU; status: active
Source: https://kalshi.com/markets/kxbrasileirogame-26oct18flusan
Observed: Oct 17, 2026, 9:00 AM UTC
Listed close: Oct 20, 2026, 7:00 PM UTC
Reported volume: 454.44 contracts
Outcome Yes: 41.3%; 24h change unavailable
Outcome No: 58.8%; 24h change unavailable
Saved rules: If Fluminense wins the Fluminense vs Santos professional Brasileiro Serie A soccer game originally scheduled for Oct 18, 2026 after 90 minutes plus stoppage time (does not include extra time or penalties), then the market resolves to Yes. Secondary rules: The following market refers to the Fluminense vs Santos professional Brasileiro Serie A soccer game originally scheduled for Oct 18, 2026 after 90 minutes plus stoppage time (does not include extra time or penalties). If the game ends in a tie, the market called "Tie" resolves to Yes. If the game is cancelled or rescheduled to over 48 hours away, the market will resolve to a fair price in accordance with the rules.

Kalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the Governing League. All trademarks, logos, and brand names are the property of their respective owners. Early close condition: This market will close and expire after a winner is declared.

Contract: Will Fluminense FC win on 2026-10-18?
Provider: polymarket; ID: polymarket-5296128; status: active
Source: https://polymarket.com/event/bra-flu-san-2026-10-18-flu
Observed: Oct 17, 2026, 9:00 AM UTC
Listed close: Oct 18, 2026, 7:00 PM UTC
Reported volume: $1.2K
Outcome Yes: 41.0%; 24h change unavailable
Outcome No: 59.0%; 24h change unavailable
Saved rules excerpt (truncated): In the upcoming game, scheduled for October 18, 2026
If Fluminense FC wins, this market will resolve to "Yes".
Otherwise, this market will resolve to "No".
If the game is postponed, this market will remain open until the game has been completed.
If the game is canceled entirely, with no make-up game, this market will resolve "No".
This market refers only to the outcome within the first 90 minutes of regular play plus stoppage time.

The primary resolution source for this market is the official statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 2 hours after the event's conclusion, data from Flashscore may be used; if Flashscore data is unavailable, data from Sofascore may be used; if neither is available, a consensus of credible reporting may be used instead. All markets will settle based on the official final result as recognized by the governing body or event organizers. Revisions to officially declared final scores made after market resolution will not be accounted for in determining the outcome. If no acceptable data is available within 24 hours of t

Contract: Fluminense FC leading at halftime?
Provider: polymarket; ID: polymarket-5297452; status: active
Source: https://polymarket.com/event/bra-flu-san-2026-10-18-halftime-result-home
Observed: Oct 17, 2026, 9:00 AM UTC
Listed close: Oct 18, 2026, 7:00 PM UTC
Reported volume: $0
Outcome Yes: 32.5%; 24h change unavailable
Outcome No: 67.5%; 24h change unavailable
Saved rules excerpt (truncated): In the upcoming game, scheduled for October 18, 2026 If Fluminense FC wins within the first 45 minutes of regular play plus stoppage time, this market will resolve to "Yes". Otherwise, this market will resolve to "No". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve "No". This market refers only to the outcome within the first 45 minutes of regular play plus stoppage time. The primary resolution source for this market is the official statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 2 hours after the event's conclusion, data from Flashscore may be used; if Flashscore data is unavailable, data from Sofascore may be used; if neither is available, a consensus of credible reporting may be used instead. All markets will settle based on the official final result as recognized by the governing body or event organizers. Revisions to officially declared final scores made after market resolution will not be accounted for in determining the ou

Contract: Fluminense wins by more than 1.5 goals?
Provider: kalshi; ID: kalshi-KXBRASILEIROSPREAD-26OCT18FLUSAN-FLU2; status: active
Source: https://kalshi.com/markets/kxbrasileirospread-26oct18flusan
Observed: Oct 17, 2026, 9:00 AM UTC
Listed close: Oct 20, 2026, 7:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 19.5%; 24h change unavailable
Outcome No: 80.5%; 24h change unavailable
Saved rules: If Fluminense wins by more than 1.5 goals in the Fluminense vs Santos professional Brasileiro Serie A soccer game originally scheduled for Oct 18, 2026 after 90 minutes plus stoppage time (does not include extra time or penalties), then the market resolves to Yes. Secondary rules: Kalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the Governing League. All trademarks, logos, and brand names are the property of their respective owners. Early close condition: This market will close and expire after a winner is declared.

Contract: Santos wins
Provider: kalshi; ID: kalshi-KXBRASILEIROGAME-26OCT18FLUSAN-SAN; status: active
Source: https://kalshi.com/markets/kxbrasileirogame-26oct18flusan
Observed: Oct 17, 2026, 9:00 AM UTC
Listed close: Oct 20, 2026, 7:00 PM UTC
Reported volume: 2.7K contracts
Outcome Yes: 31.0%; 24h change unavailable
Outcome No: 69.0%; 24h change unavailable
Saved rules: If Santos wins the Fluminense vs Santos professional Brasileiro Serie A soccer game originally scheduled for Oct 18, 2026 after 90 minutes plus stoppage time (does not include extra time or penalties), then the market resolves to Yes. Secondary rules: The following market refers to the Fluminense vs Santos professional Brasileiro Serie A soccer game originally scheduled for Oct 18, 2026 after 90 minutes plus stoppage time (does not include extra time or penalties). If the game ends in a tie, the market called "Tie" resolves to Yes. If the game is cancelled or rescheduled to over 48 hours away, the market will resolve to a fair price in accordance with the rules.

Kalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the Governing League. All trademarks, logos, and brand names are the property of their respective owners. Early close condition: This market will close and expire after a winner is declared.

Contract: Will Santos FC win on 2026-10-18?
Provider: polymarket; ID: polymarket-5296132; status: active
Source: https://polymarket.com/event/bra-flu-san-2026-10-18-san
Observed: Oct 17, 2026, 9:00 AM UTC
Listed close: Oct 18, 2026, 7:00 PM UTC
Reported volume: $778.54
Outcome Yes: 31.0%; 24h change unavailable
Outcome No: 69.0%; 24h change unavailable
Saved rules excerpt (truncated): In the upcoming game, scheduled for October 18, 2026
If Santos FC wins, this market will resolve to "Yes".
Otherwise, this market will resolve to "No".
If the game is postponed, this market will remain open until the game has been completed.
If the game is canceled entirely, with no make-up game, this market will resolve "No".
This market refers only to the outcome within the first 90 minutes of regular play plus stoppage time.

The primary resolution source for this market is the official statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 2 hours after the event's conclusion, data from Flashscore may be used; if Flashscore data is unavailable, data from Sofascore may be used; if neither is available, a consensus of credible reporting may be used instead. All markets will settle based on the official final result as recognized by the governing body or event organizers. Revisions to officially declared final scores made after market resolution will not be accounted for in determining the outcome. If no acceptable data is available within 24 hours of the e

Contract: Santos FC leading at halftime?
Provider: polymarket; ID: polymarket-5297459; status: active
Source: https://polymarket.com/event/bra-flu-san-2026-10-18-halftime-result-away
Observed: Oct 17, 2026, 9:00 AM UTC
Listed close: Oct 18, 2026, 7:00 PM UTC
Reported volume: $0
Outcome Yes: 24.5%; 24h change unavailable
Outcome No: 75.5%; 24h change unavailable
Saved rules excerpt (truncated): In the upcoming game, scheduled for October 18, 2026 If Santos FC wins within the first 45 minutes of regular play plus stoppage time, this market will resolve to "Yes". Otherwise, this market will resolve to "No". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve "No". This market refers only to the outcome within the first 45 minutes of regular play plus stoppage time. The primary resolution source for this market is the official statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 2 hours after the event's conclusion, data from Flashscore may be used; if Flashscore data is unavailable, data from Sofascore may be used; if neither is available, a consensus of credible reporting may be used instead. All markets will settle based on the official final result as recognized by the governing body or event organizers. Revisions to officially declared final scores made after market resolution will not be accounted for in determining the outcom

Contract: Santos wins by more than 1.5 goals?
Provider: kalshi; ID: kalshi-KXBRASILEIROSPREAD-26OCT18FLUSAN-SAN2; status: active
Source: https://kalshi.com/markets/kxbrasileirospread-26oct18flusan
Observed: Oct 17, 2026, 9:00 AM UTC
Listed close: Oct 20, 2026, 7:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 12.0%; 24h change unavailable
Outcome No: 88.0%; 24h change unavailable
Saved rules: If Santos wins by more than 1.5 goals in the Fluminense vs Santos professional Brasileiro Serie A soccer game originally scheduled for Oct 18, 2026 after 90 minutes plus stoppage time (does not include extra time or penalties), then the market resolves to Yes. Secondary rules: Kalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the Governing League. All trademarks, logos, and brand names are the property of their respective owners. Early close condition: This market will close and expire after a winner is declared.

Contract: Santos wins by more than 2.5 goals?
Provider: kalshi; ID: kalshi-KXBRASILEIROSPREAD-26OCT18FLUSAN-SAN3; status: active
Source: https://kalshi.com/markets/kxbrasileirospread-26oct18flusan
Observed: Oct 17, 2026, 9:00 AM UTC
Listed close: Oct 20, 2026, 7:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 4.0%; 24h change unavailable
Outcome No: 96.0%; 24h change unavailable
Saved rules: If Santos wins by more than 2.5 goals in the Fluminense vs Santos professional Brasileiro Serie A soccer game originally scheduled for Oct 18, 2026 after 90 minutes plus stoppage time (does not include extra time or penalties), then the market resolves to Yes. Secondary rules: Kalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the Governing League. All trademarks, logos, and brand names are the property of their respective owners. Early close condition: This market will close and expire after a winner is declared.

Contract: Fluminense wins by more than 2.5 goals?
Provider: kalshi; ID: kalshi-KXBRASILEIROSPREAD-26OCT18FLUSAN-FLU3; status: active
Source: https://kalshi.com/markets/kxbrasileirospread-26oct18flusan
Observed: Oct 17, 2026, 9:00 AM UTC
Listed close: Oct 20, 2026, 7:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 7.5%; 24h change unavailable
Outcome No: 92.5%; 24h change unavailable
Saved rules: If Fluminense wins by more than 2.5 goals in the Fluminense vs Santos professional Brasileiro Serie A soccer game originally scheduled for Oct 18, 2026 after 90 minutes plus stoppage time (does not include extra time or penalties), then the market resolves to Yes. Secondary rules: Kalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the Governing League. All trademarks, logos, and brand names are the property of their respective owners. Early close condition: This market will close and expire after a winner is declared.

Saved cross-platform review:
polymarket-5296128 / kalshi-KXBRASILEIROSPREAD-26OCT18FLUSAN-FLU2: Related contracts. The automated review classified this pair as related and did not establish contract equivalence. Kalshi: "Fluminense wins by more than 1.5 goals?"; listed deadline 2026-10-20T19:00:00.000Z (UTC). Polymarket: "Will Fluminense FC win on 2026-10-18?"; listed deadline 2026-10-18T19:00:00.000Z (UTC). Automated review flags: differing rules reported; differing resolution sources reported.
Price difference withheld: equivalence is not currently established.
Review date: Oct 17, 2026, 2:35 AM UTC
Review caveat: This is an automated contract review, not a guarantee of identical settlement or executable prices. Read both providers' full rules before relying on a comparison.
Review caveat: Automated review classifications: 0 equivalent, 2 related, 0 incompatible market pairs. A subset of paired outcomes does not establish equivalence of the whole event. Kalshi event: "Fluminense vs Santos: Spread". Listed deadlines for assessed markets (UTC): 2026-10-20T19:00:00.000Z. Polymarket event: "Fluminense FC vs. Santos FC". Listed deadlines for assessed markets (UTC): 2026-10-18T19:00:00.000Z. Automated review flags: differing rules reported; differing resolution sources reported.
Review caveat: The saved review identifies different resolution rules.
Review caveat: The saved review identifies different resolution sources.
polymarket-5296132 / kalshi-KXBRASILEIROSPREAD-26OCT18FLUSAN-SAN2: Related contracts. The automated review classified this pair as related and did not establish contract equivalence. Kalshi: "Santos wins by more than 1.5 goals?"; listed deadline 2026-10-20T19:00:00.000Z (UTC). Polymarket: "Will Santos FC win on 2026-10-18?"; listed deadline 2026-10-18T19:00:00.000Z (UTC). Automated review flags: differing rules reported; differing resolution sources reported.
Price difference withheld: equivalence is not currently established.
Review date: Oct 17, 2026, 2:35 AM UTC
Review caveat: This is an automated contract review, not a guarantee of identical settlement or executable prices. Read both providers' full rules before relying on a comparison.
Review caveat: Automated review classifications: 0 equivalent, 2 related, 0 incompatible market pairs. A subset of paired outcomes does not establish equivalence of the whole event. Kalshi event: "Fluminense vs Santos: Spread". Listed deadlines for assessed markets (UTC): 2026-10-20T19:00:00.000Z. Polymarket event: "Fluminense FC vs. Santos FC". Listed deadlines for assessed markets (UTC): 2026-10-18T19:00:00.000Z. Automated review flags: differing rules reported; differing resolution sources reported.
Review caveat: The saved review identifies different resolution rules.
Review caveat: The saved review identifies different resolution sources.
polymarket-5297456 / kalshi-KXBRASILEIROGAME-26OCT18FLUSAN-TIE: Related contracts. The automated review classified this pair as related and did not establish contract equivalence. Kalshi: "Tie is the result"; listed deadline 2026-10-20T19:00:00.000Z (UTC). Polymarket: "Fluminense FC vs. Santos FC: Draw at halftime?"; listed deadline 2026-10-18T19:00:00.000Z (UTC). Automated review flags: differing rules reported; differing resolution sources reported.
Price difference withheld: equivalence is not currently established.
Review date: Oct 17, 2026, 1:19 AM UTC
Review caveat: This is an automated contract review, not a guarantee of identical settlement or executable prices. Read both providers' full rules before relying on a comparison.
Review caveat: Automated review classifications: 0 equivalent, 3 related, 0 incompatible market pairs. A subset of paired outcomes does not establish equivalence of the whole event. Kalshi event: "Fluminense vs Santos". Listed deadlines for assessed markets (UTC): 2026-10-20T19:00:00.000Z. Polymarket event: "Fluminense FC vs. Santos FC - Halftime Result". Listed deadlines for assessed markets (UTC): 2026-10-18T19:00:00.000Z. Automated review flags: differing rules reported; differing resolution sources reported.
Review caveat: The saved review identifies different resolution rules.
Review caveat: The saved review identifies different resolution sources.
polymarket-5297452 / kalshi-KXBRASILEIROGAME-26OCT18FLUSAN-FLU: Related contracts. The automated review classified this pair as related and did not establish contract equivalence. Kalshi: "Fluminense wins"; listed deadline 2026-10-20T19:00:00.000Z (UTC). Polymarket: "Fluminense FC leading at halftime?"; listed deadline 2026-10-18T19:00:00.000Z (UTC). Automated review flags: differing rules reported; differing resolution sources reported.
Price difference withheld: equivalence is not currently established.
Review date: Oct 17, 2026, 1:19 AM UTC
Review caveat: This is an automated contract review, not a guarantee of identical settlement or executable prices. Read both providers' full rules before relying on a comparison.
Review caveat: Automated review classifications: 0 equivalent, 3 related, 0 incompatible market pairs. A subset of paired outcomes does not establish equivalence of the whole event. Kalshi event: "Fluminense vs Santos". Listed deadlines for assessed markets (UTC): 2026-10-20T19:00:00.000Z. Polymarket event: "Fluminense FC vs. Santos FC - Halftime Result". Listed deadlines for assessed markets (UTC): 2026-10-18T19:00:00.000Z. Automated review flags: differing rules reported; differing resolution sources reported.
Review caveat: The saved review identifies different resolution rules.
Review caveat: The saved review identifies different resolution sources.
polymarket-5297459 / kalshi-KXBRASILEIROGAME-26OCT18FLUSAN-SAN: Related contracts. The automated review classified this pair as related and did not establish contract equivalence. Kalshi: "Santos wins"; listed deadline 2026-10-20T19:00:00.000Z (UTC). Polymarket: "Santos FC leading at halftime?"; listed deadline 2026-10-18T19:00:00.000Z (UTC). Automated review flags: differing rules reported; differing resolution sources reported.
Price difference withheld: equivalence is not currently established.
Review date: Oct 17, 2026, 1:19 AM UTC
Review caveat: This is an automated contract review, not a guarantee of identical settlement or executable prices. Read both providers' full rules before relying on a comparison.
Review caveat: Automated review classifications: 0 equivalent, 3 related, 0 incompatible market pairs. A subset of paired outcomes does not establish equivalence of the whole event. Kalshi event: "Fluminense vs Santos". Listed deadlines for assessed markets (UTC): 2026-10-20T19:00:00.000Z. Polymarket event: "Fluminense FC vs. Santos FC - Halftime Result". Listed deadlines for assessed markets (UTC): 2026-10-18T19:00:00.000Z. Automated review flags: differing rules reported; differing resolution sources reported.
Review caveat: The saved review identifies different resolution rules.
Review caveat: The saved review identifies different resolution sources.
polymarket-5296128 / kalshi-KXBRASILEIROGAME-26OCT18FLUSAN-FLU: Related contracts. The automated review classified this pair as related and did not establish contract equivalence. Kalshi: "Fluminense wins"; listed deadline 2026-10-20T19:00:00.000Z (UTC). Polymarket: "Will Fluminense FC win on 2026-10-18?"; listed deadline 2026-10-18T19:00:00.000Z (UTC). Automated review flags: differing rules reported; differing resolution sources reported.
Price difference withheld: equivalence is not currently established.
Review date: Oct 17, 2026, 1:19 AM UTC
Review caveat: This is an automated contract review, not a guarantee of identical settlement or executable prices. Read both providers' full rules before relying on a comparison.
Review caveat: Automated review classifications: 0 equivalent, 3 related, 0 incompatible market pairs. A subset of paired outcomes does not establish equivalence of the whole event. Kalshi event: "Fluminense vs Santos". Listed deadlines for assessed markets (UTC): 2026-10-20T19:00:00.000Z. Polymarket event: "Fluminense FC vs. Santos FC". Listed deadlines for assessed markets (UTC): 2026-10-18T19:00:00.000Z. Automated review flags: differing rules reported; differing resolution sources reported.
Review caveat: The saved review identifies different resolution rules.
Review caveat: The saved review identifies different resolution sources.
polymarket-5296130 / kalshi-KXBRASILEIROGAME-26OCT18FLUSAN-TIE: Related contracts. The automated review classified this pair as related and did not establish contract equivalence. Kalshi: "Tie is the result"; listed deadline 2026-10-20T19:00:00.000Z (UTC). Polymarket: "Will Fluminense FC vs. Santos FC end in a draw?"; listed deadline 2026-10-18T19:00:00.000Z (UTC). Automated review flags: differing rules reported; differing resolution sources reported.
Price difference withheld: equivalence is not currently established.
Review date: Oct 17, 2026, 1:19 AM UTC
Review caveat: This is an automated contract review, not a guarantee of identical settlement or executable prices. Read both providers' full rules before relying on a comparison.
Review caveat: Automated review classifications: 0 equivalent, 3 related, 0 incompatible market pairs. A subset of paired outcomes does not establish equivalence of the whole event. Kalshi event: "Fluminense vs Santos". Listed deadlines for assessed markets (UTC): 2026-10-20T19:00:00.000Z. Polymarket event: "Fluminense FC vs. Santos FC". Listed deadlines for assessed markets (UTC): 2026-10-18T19:00:00.000Z. Automated review flags: differing rules reported; differing resolution sources reported.
Review caveat: The saved review identifies different resolution rules.
Review caveat: The saved review identifies different resolution sources.
polymarket-5296132 / kalshi-KXBRASILEIROGAME-26OCT18FLUSAN-SAN: Related contracts. The automated review classified this pair as related and did not establish contract equivalence. Kalshi: "Santos wins"; listed deadline 2026-10-20T19:00:00.000Z (UTC). Polymarket: "Will Santos FC win on 2026-10-18?"; listed deadline 2026-10-18T19:00:00.000Z (UTC). Automated review flags: differing rules reported; differing resolution sources reported.
Price difference withheld: equivalence is not currently established.
Review date: Oct 17, 2026, 1:19 AM UTC
Review caveat: This is an automated contract review, not a guarantee of identical settlement or executable prices. Read both providers' full rules before relying on a comparison.
Review caveat: Automated review classifications: 0 equivalent, 3 related, 0 incompatible market pairs. A subset of paired outcomes does not establish equivalence of the whole event. Kalshi event: "Fluminense vs Santos". Listed deadlines for assessed markets (UTC): 2026-10-20T19:00:00.000Z. Polymarket event: "Fluminense FC vs. Santos FC". Listed deadlines for assessed markets (UTC): 2026-10-18T19:00:00.000Z. Automated review flags: differing rules reported; differing resolution sources reported.
Review caveat: The saved review identifies different resolution rules.
Review caveat: The saved review identifies different resolution sources.

Explain the named outcomes, material rule/deadline differences, and evidence limits. Keep Polymarket dollar volume separate from Kalshi contract counts. Do not average unrelated contracts, infer missing prices or changes, or describe unreviewed/related pairs as equivalent. Distinguish listed prices from executable bid/ask prices, fees and available size. Do not invent current news, confidence scores or settlement guarantees. Cite the provided source links and identify what further evidence would be needed.

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AI-written background. References identify the evidence used; Wikipedia links under Learn More are additional reading. Prices and provider rules are dated snapshots. This is not financial advice.

KALSHISports

Fluminense vs Santos

FLU vs SAN (Oct 18) If X wins the Fluminense vs Santos professional Brasileiro Serie A soccer game originally scheduled for Oct 18, 2026 after 90 minutes plus stoppage time, does not include extra time or penalties, then the market resolves to Yes. The following market refers to the Fluminense vs Santos professional Brasileiro Serie A soccer game originally scheduled for Oct 18, 2026 after 90 minutes plus stoppage time, does not include extra time or penalties. If the game ends in a tie, the market called "Tie" resolves to Yes. If the game is cancelled or rescheduled to over 48 hours away, the market will resolve to a fair price in accordance with the rules. Kalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the Governing League. All trademarks, logos, and brand names are the property of their respective owners. This market will close and expire after a winner is declared.

Volume$3.19K

Markets3

POLYMARKETSports

Fluminense FC vs. Santos FC

This event is for the upcoming Brazil Série A game, scheduled for Sunday, October 18, 2026 between Fluminense FC and Santos FC.

Volume$2.22K

Markets3

5 of 5

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Fluminense wins

kalshi

Fluminense wins

Yes: 41.3¢
No: 58.8¢

polymarket

Will Fluminense FC win on 2026-10-18?

Yes: 41.0¢
No: 59.0¢

polymarket

Fluminense FC leading at halftime?

Yes: 32.5¢
No: 67.5¢

kalshi

Fluminense wins by more than 1.5 goals?

Yes: 19.5¢
No: 80.5¢

Tie is the result

kalshi

Tie is the result

Yes: 27.8¢
No: 72.2¢

polymarket

Will Fluminense FC vs. Santos FC end in a draw?

Yes: 28.0¢
No: 72.0¢

polymarket

Fluminense FC vs. Santos FC: Draw at halftime?

Yes: 42.5¢
No: 57.5¢

Santos wins

kalshi

Santos wins

Yes: 31.0¢
No: 69.0¢

polymarket

Will Santos FC win on 2026-10-18?

Yes: 31.0¢
No: 69.0¢

polymarket

Santos FC leading at halftime?

Yes: 24.5¢
No: 75.5¢

kalshi

Santos wins by more than 1.5 goals?

Yes: 12.0¢
No: 88.0¢

Fluminense wins by more than 2.5 goals?

kalshi

Fluminense wins by more than 2.5 goals?

Yes: 7.5¢
No: 92.5¢

Santos wins by more than 2.5 goals?

kalshi

Santos wins by more than 2.5 goals?

Yes: 4.0¢
No: 96.0¢

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Next Market Deadline

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Oct 18, 2026, 7:00 PM UTC

Market Insights

Price gaps of 2 pp+

Reviewed equivalent pairs

No currently reviewed equivalent pairs with both binary Yes prices are available.

Price differences do not establish arbitrage. Check each pair's review, current order prices, fees and settlement rules.

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Fluminense vs Santos: Spread

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Fluminense wins by more than 2.5 goals?

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Events (4)

Fluminense vs Santos

Fluminense FC vs. Santos FC

Markets (3)

Fluminense wins

Tie is the result

Santos wins

Fluminense wins by more than 2.5 goals?

Santos wins by more than 2.5 goals?

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Fluminense wins by more than 2.5 goals?

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Saved matching review

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Fluminense vs Santos

Fluminense FC vs. Santos FC

Fluminense wins

Tie is the result

Santos wins

Fluminense wins by more than 2.5 goals?

Santos wins by more than 2.5 goals?

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