The S&P 500 surged to a fresh record close on Tuesday as strong corporate earnings, easing oil prices and optimism over a potential breakthrough between the U.S. and Iran fueled another broad-based rally.
Polymarket traders are now overwhelmingly betting the benchmark will extend those gains at Wednesday's open.
The S&P 500 rose 1.79% to close at 7,736.52, after opening at 7,630.62.
The Aug. 5 Polymarket contract implied an 87% probability that the index will open higher on Wednesday.
Why That Number Matters Tuesday's rally pushed the S&P 500 above the 7,700 level for the first time ever, with both the benchmark index and the Dow Jones Industrial Average notching fresh record closes.
