S&P 500 (SPX) Opens Up or Down on April 28?
2 signals across 1 market · $4,139 tracked · resolves Apr 28, 2026
This event tracks whether the S&P 500 (SPX) will open higher or lower on April 28 compared with its previous official closing price. PolySpotter shows the live prediction-market view across the up/down outcome, including $4,139 in tracked smart money activity and recent signals from a 90% win-rate SPX bettor.
Markets (1)
Top trades across all markets
- 90% win-rate SPX bettor
A high-accuracy bettor with a strong demonstrated edge bought Down at 39¢ in a moderately thin SPX open market, making this a copy-worthy sharp trade despite only one trade.
$1,839Wallet win rate: 88%Score: 5.0 - 90% win-rate SPX bettor
A high-win-rate bettor with a strong historical edge sold Down in a moderately thin SPX open market, implying a fresh buy on Up around 52¢ worth following.
$2,300Wallet win rate: 88%Score: 4.0
Top wallets in this event
- 0x0e7185…be4c$4,139 · 1 market · 2 alerts · 88% wins
FAQs
What are the odds the S&P 500 opens up on April 28?
The market odds reflect where Polymarket traders are pricing the chance that the official SPX open on April 28 is higher than the previous trading day's official close. Check the live event markets for the latest up/down pricing before the open.
What is the smart money doing on this SPX open market?
PolySpotter has tracked $4,139 in smart money activity across this event, with 2 recent signals. The alert headlines highlight activity from a 90% win-rate SPX bettor, which may be useful context for traders watching the open.
How does this S&P 500 prediction market resolve?
It resolves to “Up” if the official S&P 500 Index opening price on April 28 is higher than the most recent prior trading day's official close. It resolves to “Down” if the open is lower.
When does the SPX April 28 market resolve?
This event is scheduled to resolve by April 28, 2026 at 20:00 UTC, after the relevant official S&P 500 opening price is available.