The S&P 500 slipped on the first trading day of the second half of 2026 as investors continued rotating out of semiconductor stocks, while Polymarket traders remain evenly divided over Thursday’s opening direction.
The S&P 500 fell 0.22% to close at 7,483.23 on Wednesday. The July 2 Polymarket contract now implies a 47% probability that the benchmark index will open higher on Thursday, after volatile trading that saw the odds swing sharply before recovering toward even odds.
