Market snapshot: Oct 18, 2026, 9:00 PM UTC. Prices may have changed since this snapshot.

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Event GroupKALSHISports

Boston vs Detroit: 1st Half Spread

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Boston vs Detroit: 1st Half Spread

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Events

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kalshi

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Price ChartContract price history

19 markets tracked

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

Detroit wins the 1st half by over 8.5 points

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Single-Platform Markets(19)

Market	Platform	Price
Detroit wins the 1st half by over 8.5 points	Kalshi	48.5%
Detroit wins the 1st half by over 6.5 points	Kalshi	48.5%
Detroit wins the 1st half by over 4.5 points	Kalshi	48.5%
Detroit wins the 1st half by over 2.5 points	Kalshi	48.5%
Detroit wins the 1st half by over 1.5 points	Kalshi	48.5%
Detroit wins the 1st half by over 16.5 points	Kalshi	48.5%
Detroit wins the 1st half by over 14.5 points	Kalshi	48.5%
Detroit wins the 1st half by over 12.5 points	Kalshi	48.5%
Detroit wins the 1st half by over 10.5 points	Kalshi	48.5%
Boston wins the 1st half by over 7.5 points	Kalshi	48.5%
Boston wins the 1st half by over 5.5 points	Kalshi	48.5%
Boston wins the 1st half by over 3.5 points	Kalshi	48.5%
Boston wins the 1st half by over 1.5 points	Kalshi	48.5%
Boston wins the 1st half by over 15.5 points	Kalshi	48.5%
Boston wins the 1st half by over 13.5 points	Kalshi	48.5%
Boston wins the 1st half by over 11.5 points	Kalshi	48.5%
Boston wins the 1st half by over 9.5 points	Kalshi	48.5%
Boston wins the 1st half by over 17.5 points	Kalshi	47.5%
Boston wins the 1st half by over 19.5 points	Kalshi	43.0%

Rules & Resolution

Saved matching review

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AI Analysis

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K 0 contracts

Reported volume · provider units

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Reviewed equivalent pairs

Source snapshot: Oct 18, 2026, 9:00 PM UTC

About This Event

BOS vs DET (Oct 20) If Detroit wins by more than X points in the 1st half of the Boston vs Detroit Pro Basketball game originally scheduled for Oct 20, 2026, then the market resolves to Yes. Note: 2nd half markets are inclusive of overtime. 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 early if the event occurs.

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

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Event: Boston vs Detroit: 1st Half Spread
Source snapshot: Oct 18, 2026, 9:00 PM UTC
Reported event volume (provider units): K 0 contracts
Coverage: 19 of 19 saved contracts included.
Prices are saved observations, not executable quotes. Listed close dates do not promise settlement or payout time.

Contract: Detroit wins the 1st half by over 8.5 points
Provider: kalshi; ID: kalshi-KXNBA1HSPREAD-26OCT20BOSDET-DET9; status: active
Source: https://kalshi.com/markets/kxnba1hspread-26oct20bosdet
Observed: Oct 18, 2026, 9:00 PM UTC
Listed close: Oct 22, 2026, 7:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 48.5%; 24h change unavailable
Outcome No: 51.5%; 24h change unavailable
Saved rules: If Detroit wins by more than 8.5 points in the 1st half of the Boston vs Detroit Pro Basketball game originally scheduled for Oct 20, 2026, then the market resolves to Yes. Secondary rules: Note: 2nd half markets are inclusive of overtime.

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 early if the event occurs.

Contract: Detroit wins the 1st half by over 6.5 points
Provider: kalshi; ID: kalshi-KXNBA1HSPREAD-26OCT20BOSDET-DET7; status: active
Source: https://kalshi.com/markets/kxnba1hspread-26oct20bosdet
Observed: Oct 18, 2026, 9:00 PM UTC
Listed close: Oct 22, 2026, 7:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 48.5%; 24h change unavailable
Outcome No: 51.5%; 24h change unavailable
Saved rules: If Detroit wins by more than 6.5 points in the 1st half of the Boston vs Detroit Pro Basketball game originally scheduled for Oct 20, 2026, then the market resolves to Yes. Secondary rules: Note: 2nd half markets are inclusive of overtime.

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 early if the event occurs.

Contract: Detroit wins the 1st half by over 4.5 points
Provider: kalshi; ID: kalshi-KXNBA1HSPREAD-26OCT20BOSDET-DET5; status: active
Source: https://kalshi.com/markets/kxnba1hspread-26oct20bosdet
Observed: Oct 18, 2026, 9:00 PM UTC
Listed close: Oct 22, 2026, 7:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 48.5%; 24h change unavailable
Outcome No: 51.5%; 24h change unavailable
Saved rules: If Detroit wins by more than 4.5 points in the 1st half of the Boston vs Detroit Pro Basketball game originally scheduled for Oct 20, 2026, then the market resolves to Yes. Secondary rules: Note: 2nd half markets are inclusive of overtime.

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 early if the event occurs.

Contract: Detroit wins the 1st half by over 2.5 points
Provider: kalshi; ID: kalshi-KXNBA1HSPREAD-26OCT20BOSDET-DET3; status: active
Source: https://kalshi.com/markets/kxnba1hspread-26oct20bosdet
Observed: Oct 18, 2026, 9:00 PM UTC
Listed close: Oct 22, 2026, 7:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 48.5%; 24h change unavailable
Outcome No: 51.5%; 24h change unavailable
Saved rules: If Detroit wins by more than 2.5 points in the 1st half of the Boston vs Detroit Pro Basketball game originally scheduled for Oct 20, 2026, then the market resolves to Yes. Secondary rules: Note: 2nd half markets are inclusive of overtime.

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 early if the event occurs.

Contract: Detroit wins the 1st half by over 1.5 points
Provider: kalshi; ID: kalshi-KXNBA1HSPREAD-26OCT20BOSDET-DET2; status: active
Source: https://kalshi.com/markets/kxnba1hspread-26oct20bosdet
Observed: Oct 18, 2026, 9:00 PM UTC
Listed close: Oct 22, 2026, 7:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 48.5%; 24h change unavailable
Outcome No: 51.5%; 24h change unavailable
Saved rules: If Detroit wins by more than 1.5 points in the 1st half of the Boston vs Detroit Pro Basketball game originally scheduled for Oct 20, 2026, then the market resolves to Yes. Secondary rules: Note: 2nd half markets are inclusive of overtime.

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 early if the event occurs.

Contract: Detroit wins the 1st half by over 16.5 points
Provider: kalshi; ID: kalshi-KXNBA1HSPREAD-26OCT20BOSDET-DET17; status: active
Source: https://kalshi.com/markets/kxnba1hspread-26oct20bosdet
Observed: Oct 18, 2026, 9:00 PM UTC
Listed close: Oct 22, 2026, 7:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 48.5%; 24h change unavailable
Outcome No: 51.5%; 24h change unavailable
Saved rules: If Detroit wins by more than 16.5 points in the 1st half of the Boston vs Detroit Pro Basketball game originally scheduled for Oct 20, 2026, then the market resolves to Yes. Secondary rules: Note: 2nd half markets are inclusive of overtime.

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 early if the event occurs.

Contract: Detroit wins the 1st half by over 14.5 points
Provider: kalshi; ID: kalshi-KXNBA1HSPREAD-26OCT20BOSDET-DET15; status: active
Source: https://kalshi.com/markets/kxnba1hspread-26oct20bosdet
Observed: Oct 18, 2026, 9:00 PM UTC
Listed close: Oct 22, 2026, 7:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 48.5%; 24h change unavailable
Outcome No: 51.5%; 24h change unavailable
Saved rules: If Detroit wins by more than 14.5 points in the 1st half of the Boston vs Detroit Pro Basketball game originally scheduled for Oct 20, 2026, then the market resolves to Yes. Secondary rules: Note: 2nd half markets are inclusive of overtime.

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 early if the event occurs.

Contract: Detroit wins the 1st half by over 12.5 points
Provider: kalshi; ID: kalshi-KXNBA1HSPREAD-26OCT20BOSDET-DET13; status: active
Source: https://kalshi.com/markets/kxnba1hspread-26oct20bosdet
Observed: Oct 18, 2026, 9:00 PM UTC
Listed close: Oct 22, 2026, 7:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 48.5%; 24h change unavailable
Outcome No: 51.5%; 24h change unavailable
Saved rules: If Detroit wins by more than 12.5 points in the 1st half of the Boston vs Detroit Pro Basketball game originally scheduled for Oct 20, 2026, then the market resolves to Yes. Secondary rules: Note: 2nd half markets are inclusive of overtime.

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 early if the event occurs.

Contract: Detroit wins the 1st half by over 10.5 points
Provider: kalshi; ID: kalshi-KXNBA1HSPREAD-26OCT20BOSDET-DET11; status: active
Source: https://kalshi.com/markets/kxnba1hspread-26oct20bosdet
Observed: Oct 18, 2026, 9:00 PM UTC
Listed close: Oct 22, 2026, 7:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 48.5%; 24h change unavailable
Outcome No: 51.5%; 24h change unavailable
Saved rules: If Detroit wins by more than 10.5 points in the 1st half of the Boston vs Detroit Pro Basketball game originally scheduled for Oct 20, 2026, then the market resolves to Yes. Secondary rules: Note: 2nd half markets are inclusive of overtime.

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 early if the event occurs.

Contract: Boston wins the 1st half by over 7.5 points
Provider: kalshi; ID: kalshi-KXNBA1HSPREAD-26OCT20BOSDET-BOS8; status: active
Source: https://kalshi.com/markets/kxnba1hspread-26oct20bosdet
Observed: Oct 18, 2026, 9:00 PM UTC
Listed close: Oct 22, 2026, 7:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 48.5%; 24h change unavailable
Outcome No: 51.5%; 24h change unavailable
Saved rules: If Boston wins by more than 7.5 points in the 1st half of the Boston vs Detroit Pro Basketball game originally scheduled for Oct 20, 2026, then the market resolves to Yes. Secondary rules: Note: 2nd half markets are inclusive of overtime.

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 early if the event occurs.

Contract: Boston wins the 1st half by over 5.5 points
Provider: kalshi; ID: kalshi-KXNBA1HSPREAD-26OCT20BOSDET-BOS6; status: active
Source: https://kalshi.com/markets/kxnba1hspread-26oct20bosdet
Observed: Oct 18, 2026, 9:00 PM UTC
Listed close: Oct 22, 2026, 7:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 48.5%; 24h change unavailable
Outcome No: 51.5%; 24h change unavailable
Saved rules: If Boston wins by more than 5.5 points in the 1st half of the Boston vs Detroit Pro Basketball game originally scheduled for Oct 20, 2026, then the market resolves to Yes. Secondary rules: Note: 2nd half markets are inclusive of overtime.

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 early if the event occurs.

Contract: Boston wins the 1st half by over 3.5 points
Provider: kalshi; ID: kalshi-KXNBA1HSPREAD-26OCT20BOSDET-BOS4; status: active
Source: https://kalshi.com/markets/kxnba1hspread-26oct20bosdet
Observed: Oct 18, 2026, 9:00 PM UTC
Listed close: Oct 22, 2026, 7:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 48.5%; 24h change unavailable
Outcome No: 51.5%; 24h change unavailable
Saved rules: If Boston wins by more than 3.5 points in the 1st half of the Boston vs Detroit Pro Basketball game originally scheduled for Oct 20, 2026, then the market resolves to Yes. Secondary rules: Note: 2nd half markets are inclusive of overtime.

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 early if the event occurs.

Contract: Boston wins the 1st half by over 19.5 points
Provider: kalshi; ID: kalshi-KXNBA1HSPREAD-26OCT20BOSDET-BOS20; status: active
Source: https://kalshi.com/markets/kxnba1hspread-26oct20bosdet
Observed: Oct 18, 2026, 9:00 PM UTC
Listed close: Oct 22, 2026, 7:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 43.0%; 24h change unavailable
Outcome No: 57.0%; 24h change unavailable
Saved rules: If Boston wins by more than 19.5 points in the 1st half of the Boston vs Detroit Pro Basketball game originally scheduled for Oct 20, 2026, then the market resolves to Yes. Secondary rules: Note: 2nd half markets are inclusive of overtime.

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 early if the event occurs.

Contract: Boston wins the 1st half by over 1.5 points
Provider: kalshi; ID: kalshi-KXNBA1HSPREAD-26OCT20BOSDET-BOS2; status: active
Source: https://kalshi.com/markets/kxnba1hspread-26oct20bosdet
Observed: Oct 18, 2026, 9:00 PM UTC
Listed close: Oct 22, 2026, 7:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 48.5%; 24h change unavailable
Outcome No: 51.5%; 24h change unavailable
Saved rules: If Boston wins by more than 1.5 points in the 1st half of the Boston vs Detroit Pro Basketball game originally scheduled for Oct 20, 2026, then the market resolves to Yes. Secondary rules: Note: 2nd half markets are inclusive of overtime.

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 early if the event occurs.

Contract: Boston wins the 1st half by over 17.5 points
Provider: kalshi; ID: kalshi-KXNBA1HSPREAD-26OCT20BOSDET-BOS18; status: active
Source: https://kalshi.com/markets/kxnba1hspread-26oct20bosdet
Observed: Oct 18, 2026, 9:00 PM UTC
Listed close: Oct 22, 2026, 7:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 47.5%; 24h change unavailable
Outcome No: 52.5%; 24h change unavailable
Saved rules: If Boston wins by more than 17.5 points in the 1st half of the Boston vs Detroit Pro Basketball game originally scheduled for Oct 20, 2026, then the market resolves to Yes. Secondary rules: Note: 2nd half markets are inclusive of overtime.

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 early if the event occurs.

Contract: Boston wins the 1st half by over 15.5 points
Provider: kalshi; ID: kalshi-KXNBA1HSPREAD-26OCT20BOSDET-BOS16; status: active
Source: https://kalshi.com/markets/kxnba1hspread-26oct20bosdet
Observed: Oct 18, 2026, 9:00 PM UTC
Listed close: Oct 22, 2026, 7:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 48.5%; 24h change unavailable
Outcome No: 51.5%; 24h change unavailable
Saved rules: If Boston wins by more than 15.5 points in the 1st half of the Boston vs Detroit Pro Basketball game originally scheduled for Oct 20, 2026, then the market resolves to Yes. Secondary rules: Note: 2nd half markets are inclusive of overtime.

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 early if the event occurs.

Contract: Boston wins the 1st half by over 13.5 points
Provider: kalshi; ID: kalshi-KXNBA1HSPREAD-26OCT20BOSDET-BOS14; status: active
Source: https://kalshi.com/markets/kxnba1hspread-26oct20bosdet
Observed: Oct 18, 2026, 9:00 PM UTC
Listed close: Oct 22, 2026, 7:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 48.5%; 24h change unavailable
Outcome No: 51.5%; 24h change unavailable
Saved rules: If Boston wins by more than 13.5 points in the 1st half of the Boston vs Detroit Pro Basketball game originally scheduled for Oct 20, 2026, then the market resolves to Yes. Secondary rules: Note: 2nd half markets are inclusive of overtime.

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 early if the event occurs.

Contract: Boston wins the 1st half by over 11.5 points
Provider: kalshi; ID: kalshi-KXNBA1HSPREAD-26OCT20BOSDET-BOS12; status: active
Source: https://kalshi.com/markets/kxnba1hspread-26oct20bosdet
Observed: Oct 18, 2026, 9:00 PM UTC
Listed close: Oct 22, 2026, 7:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 48.5%; 24h change unavailable
Outcome No: 51.5%; 24h change unavailable
Saved rules: If Boston wins by more than 11.5 points in the 1st half of the Boston vs Detroit Pro Basketball game originally scheduled for Oct 20, 2026, then the market resolves to Yes. Secondary rules: Note: 2nd half markets are inclusive of overtime.

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 early if the event occurs.

Contract: Boston wins the 1st half by over 9.5 points
Provider: kalshi; ID: kalshi-KXNBA1HSPREAD-26OCT20BOSDET-BOS10; status: active
Source: https://kalshi.com/markets/kxnba1hspread-26oct20bosdet
Observed: Oct 18, 2026, 9:00 PM UTC
Listed close: Oct 22, 2026, 7:00 PM UTC
Reported volume: 0 contracts
Outcome Yes: 48.5%; 24h change unavailable
Outcome No: 51.5%; 24h change unavailable
Saved rules: If Boston wins by more than 9.5 points in the 1st half of the Boston vs Detroit Pro Basketball game originally scheduled for Oct 20, 2026, then the market resolves to Yes. Secondary rules: Note: 2nd half markets are inclusive of overtime.

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 early if the event occurs.

Saved cross-platform review:
No exact pair with two valid binary Yes prices is available for comparison.

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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