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Apr 22, 2026 8:01 AM

Will S&P 500 Open Up Or Down On Wednesday As Trump Extends Iran Ceasefire?

The S&P 500 fell on Tuesday, dropping 0.63% to close at 7,064.01, as concerns grew that a U.S.-Iran peace deal would not be reached before the ceasefire deadline.

However, the Polygon-based (CRYPTO: POL) Polymarket crowd is overwhelmingly bullish heading into Wednesday. The April 22 market shows about 89% of traders betting "Up," with early trading activity building on whether the S&P 500 will open higher or lower.

Why That Number Matters

Stocks declined during Tuesday's session as uncertainty rose around whether the ceasefire would hold. However, sentiment shifted after the close. President Donald Trump said the U.S. would ...