S&P 500 (SPX) Opens Up or Down on May 28?

**Market Overview** The prediction market "S&P 500 (SPX) Opens Up or Down on May 28?" is currently trading at 37.0% on Polymarket, reflecting real-time sentiment and odds from 53 active participants. As of May 28, 2026, this market has generated $9.9K in total trading volume, making it an emerging prediction market in the general category. **Current Odds & Price Action** The "Up" outcome is priced at 37.0%, while "Down" trades at 63.0%. The market has remained relatively stable over the past 24 hours, suggesting established consensus among traders about the likely outcome. **Liquidity & Trading Conditions** This market offers $2.5K in liquidity, suitable for retail-sized positions. **Market Timeline** This market is approaching its resolution date and will close soon.