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Apr 4, 2026 10:16 PM

Will S&P 500 Open Up Or Down On April 2?

The S&P 500 rose on Wednesday, gaining 0.72% to close at 6,575.32, as optimism around a potential end to the Iran war lifted sentiment for a second straight session.

The Polygon-based (CRYPTO: POL) Polymarket crowd is turning cautious heading into Thursday. The April 2 market shows just a 5% chance for “Up” with early trading activity building on whether the S&P 500 will open higher or lower.

Why That Number Matters

Sentiment shifted sharply overnight after President Donald Trump signaled that the war could continue, despite earlier ...