Near room-temperature Meissner effect in 2026?

In 2027 If a peer-reviewed paper published in an eligible journal reports the discovery of a material exhibiting the Meissner effect at ambient pressure with a critical temperature of at least 240 K before January 1, 2027, the market resolves to Yes. Eligible journals are those in the first quartile (Q1) of SCImago's condensed matter physics ranking or any journal with an SJR above 1.0. The material need not be a previously researched substance. If this event occurs, the market will close the f