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

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

Volume:
$95,705

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

 - Polymarket

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

1W

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Resolved May 28, 2026

Closed: May 28, 4:00 PM EST

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

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$95,705
N/A
N/A
N/A
Settled
Yes
Total markets: 1

Intro

This market tracks whether the S&P 500 index will close higher or lower on May 28, 2026 compared to the previous trading day's close. On Polymarket, the leading outcome currently stands at 100.0%. Resolution will be determined by official closing prices from the Wall Street Journal's market data. Traders should monitor economic data releases and market sentiment in the days leading up to May 28, 2026, as these factors typically drive intraday index movement and final closing direction.

Frequently asked questions

The dashboard tracks real-time odds and trading activity for the S&P 500 directional outcome on May 28 on Polymarket. It displays the current probability that the SPX closes up or down on that date, along with 24-hour volume of $94,952 and total group volume of $95,701. The interface shows live price movements, historical odds trends, and order-book depth, enabling traders to monitor sentiment shifts and liquidity as the event date approaches. This single-venue view captures all prediction market activity for this specific SPX directional bet.

The market resolves at May 28, 2026, immediately following the official close of the S&P 500 on May 28. The outcome is determined by whether the SPX closes higher or lower than its opening price on that date. Resolution is automatic and based on widely published market data, ensuring transparency and eliminating ambiguity. Traders holding winning positions receive their payout shortly after the official close is confirmed, while losing positions expire worthless.

Major catalysts affecting SPX direction on May 28 include Federal Reserve communications, inflation data, corporate earnings surprises, and geopolitical developments. Economic releases such as PCE inflation, jobless claims, or GDP revisions can shift market sentiment overnight. Earnings announcements from mega-cap constituents, central bank policy signals, and bond-market moves also influence equity futures and spot prices. Overnight international market action, particularly in Asia and Europe, sets tone for the US open. Unexpected corporate news, M&A activity, or sector rotations can drive directional momentum into the close.