Stock Market: Will S&P 500 Open Up or Down Today? – Apple (NASDAQ:AAPL), Meta Platforms (NASDAQ:META)

Jul 31, 2026
stock-market:-will-s&p-500-open-up-or-down-today?-–-apple-(nasdaq:aapl),-meta-platforms-(nasdaq:meta)

The S&P 500 rose 1.66% to close at 7,437.63, after opening at 7,390.45. The July 31 Polymarket contract implied a 94% probability that the index will open higher on Friday.

Why That Number Matters

The final trading day of July caps one of the busiest weeks of the earnings season, with investors continuing to assess whether massive artificial intelligence investments are translating into stronger financial performance.

Markets are also continuing to digest the Federal Reserve’s decision earlier this week to leave interest rates unchanged, while Treasury yields remain near multi-year highs as investors reassess the outlook for inflation and monetary policy.

The Bull Case

Thursday’s rally suggested investor appetite for AI-linked companies remains intact when earnings support lofty valuations.

The optimism extended globally on Friday. South Korea’s Kospi recorded its best day on record as chipmakers rallied, Japan’s Nikkei 225 climbed sharply and European equities also traded higher, reinforcing positive risk sentiment heading into the U.S. session.

The Countercase

Despite the rebound, risks remain.

Meanwhile, Treasury yields remain elevated after the Federal Reserve kept interest rates unchanged earlier this week.

S&P 500 futures rose 0.48% early Friday.

How The Previous Bet Played Out: The July 30 Polymarket contract attracted just $9,180 in traded volume, making it one of the quietest S&P 500 prediction markets this month. The index opened at 7,390.45, above the previous session’s close of 7,316.15, meaning the contract ultimately resolved “Up.”

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