Annual Return: S&P 500 vs. S&P 500 Equal Weight Index

As of Tue, 20 Oct 2026 12:43:44 UTC, Kalshi traders price S&P 500 Index (67.0%), S&P 500 Equal Weight Index (40.0%). The market has $4K in volume and closes on Fri, 01 Jan 2027.

Updated:

Current odds

OutcomeChanceYes priceNo price
S&P 500 Index67.0%67.0¢33.0¢
S&P 500 Equal Weight Index40.0%40.0¢60.0¢

Market details

Resolution rules

Each outcome is a separate contract with its own rules. The rules for S&P 500 Index:

If S&P 500 Index performs above S&P 500 Equal Weight Index during 2026 by 0.001% rounded to the nearest 3rd then the market resolves to Yes. Percent return is calculated from the official open price of each asset on January 2, 2026 (the first published trading day of the calendar year) and the official closing price on December 31, 2026. For example, if the S&P 500 Index opens at $5,800 on January 2, 2026 and at $6,380 on December 31, 2026, it will be concluded that the annual percentage return of the S&P 500 is +10.000%.

Sources

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