Trader consensus on Polymarket prices a 99.5% implied probability of negative Q1 S&P 500 performance, driven by surging oil prices from escalating U.S.-Israeli conflict with Iran in the Middle East, which has fueled inflation fears and triggered a four-week losing streak. The index closed March 27 at 6,369, down approximately 7% year-to-date from its December 31, 2025 level of 6,846, exacerbated by February's unexpectedly weak nonfarm payrolls showing a 92,000 job loss and unemployment rising to 4.4%. With resolution imminent by March 31, only a dramatic de-escalation or surprise economic rebound could challenge this positioning, though downside momentum dominates skin-in-the-game sentiment.
Experimental AI-generated summary referencing Polymarket data · Updated<0% 99.5%
2-3% <1%
4-5% <1%
8-10% <1%
$349,942 Vol.
$349,942 Vol.
<0%
100%
0-2%
<1%
2-3%
<1%
3-4%
<1%
4-5%
<1%
5-6%
<1%
6-8%
<1%
8-10%
<1%
10%+
<1%
<0% 99.5%
2-3% <1%
4-5% <1%
8-10% <1%
$349,942 Vol.
$349,942 Vol.
<0%
100%
0-2%
<1%
2-3%
<1%
3-4%
<1%
4-5%
<1%
5-6%
<1%
6-8%
<1%
8-10%
<1%
10%+
<1%
The percentage change in the S&P 500 Index (SPX) in the specified quarter will be calculated by comparing the official closing price for the S&P 500 Index (SPX) for the final trading day of the quarter to the official closing price for the S&P 500 Index (SPX) for the final trading day of the previous quarter, as reported by the Wall Street Journal. The closing price for the final trading day of the previous quarter will be subtracted from the closing price for the final trading day of the specified quarter, and then that difference will be divided by the closing price for the final trading day of the previous quarter.
Percentage changes will be rounded to two decimal places away from zero (e.g. a percentage change of 4.995% would be considered 5.00%, and a percentage change of 4.993% would be considered 4.99%)
If any relevant trading day is shortened (for example, due to a market-holiday schedule), the official closing price published for that shortened session will still be used for resolution.
If no official closing price is published for a relevant trading day (for example, due to a trading halt into the close, system issue, or other disruption), this market will use the most recent official price published by the specified resolution source as the effective closing price.
If the percentage change in the S&P 500 Index (SPX) in the first quarter of 2026 falls exactly between two listed brackets, this market will resolve to the higher bracket.
The resolution source for this market will be the Wall Street Journal, specifically the daily CLOSE prices for the S&P 500 Index (SPX) published on the S&P 500 Index (SPX) historical prices page (https://www.wsj.com/market-data/quotes/index/SPX/historical-prices).
Market Opened: Jan 14, 2026, 5:52 PM ET
Resolver
0x2F5e3684c...The percentage change in the S&P 500 Index (SPX) in the specified quarter will be calculated by comparing the official closing price for the S&P 500 Index (SPX) for the final trading day of the quarter to the official closing price for the S&P 500 Index (SPX) for the final trading day of the previous quarter, as reported by the Wall Street Journal. The closing price for the final trading day of the previous quarter will be subtracted from the closing price for the final trading day of the specified quarter, and then that difference will be divided by the closing price for the final trading day of the previous quarter.
Percentage changes will be rounded to two decimal places away from zero (e.g. a percentage change of 4.995% would be considered 5.00%, and a percentage change of 4.993% would be considered 4.99%)
If any relevant trading day is shortened (for example, due to a market-holiday schedule), the official closing price published for that shortened session will still be used for resolution.
If no official closing price is published for a relevant trading day (for example, due to a trading halt into the close, system issue, or other disruption), this market will use the most recent official price published by the specified resolution source as the effective closing price.
If the percentage change in the S&P 500 Index (SPX) in the first quarter of 2026 falls exactly between two listed brackets, this market will resolve to the higher bracket.
The resolution source for this market will be the Wall Street Journal, specifically the daily CLOSE prices for the S&P 500 Index (SPX) published on the S&P 500 Index (SPX) historical prices page (https://www.wsj.com/market-data/quotes/index/SPX/historical-prices).
Resolver
0x2F5e3684c...Trader consensus on Polymarket prices a 99.5% implied probability of negative Q1 S&P 500 performance, driven by surging oil prices from escalating U.S.-Israeli conflict with Iran in the Middle East, which has fueled inflation fears and triggered a four-week losing streak. The index closed March 27 at 6,369, down approximately 7% year-to-date from its December 31, 2025 level of 6,846, exacerbated by February's unexpectedly weak nonfarm payrolls showing a 92,000 job loss and unemployment rising to 4.4%. With resolution imminent by March 31, only a dramatic de-escalation or surprise economic rebound could challenge this positioning, though downside momentum dominates skin-in-the-game sentiment.
Experimental AI-generated summary referencing Polymarket data · Updated



Beware of external links.
Beware of external links.
Frequently Asked Questions