S&P 500 (SPX) Up or Down on May 28?
Market price history
Rolling 7-day window of market YES price with the OU fair-price range overlay.
Not enough history yet for a chart.
New points land on each refresh — check back shortly.
New points land on each refresh — check back shortly.
Market price
YES56¢ (56%)
NO44¢ (44%)
Latest refresh · prices in cents
Polymarket • Volume: $9.3K • Updated 2h agoCloses: 2026-05-28
Polymarket · Financials
OU's Pick
NO at 44¢ · pays 2.2×
Price gap
Polymarket44¢
→OU's fair44¢
Confidence
Low
Historical data shows the S&P 500 has a slight positive bias on any given trading day but no specific news for May 28 2026 is available.
Closes in16h
Off market consensus
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