The S&P 500 closed at 7,764.70 on September 21, 2026, up 1.49% and within 0.4% of its August record of 7,798.99, after a three-day advance of nearly 2.8%. The primary driver of recent sentiment is the Federal Reserve’s unanimous 25-basis-point rate hike to a 3.75–4.00% target range on September 16, the first increase in more than three years, coupled with updated projections showing most officials expecting at least one additional move this year amid elevated inflation readings near 3.7% PCE. Easing oil prices toward $100 per barrel and a decline in the 10-year Treasury yield to 4.95% provided immediate support. Traders are monitoring lighter data releases this week, including the Richmond Fed manufacturing index, new home sales, durable goods orders, and University of Michigan sentiment, for signs of labor-market or inflation momentum that could influence near-term equity levels.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated$13,583 Vol.
↑ $800
6%
↑ $795
4%
↑ $790
10%
↑ $785
22%
↑ $780
48%
↑ $775
81%
↓ $770
68%
↓ $765
36%
↓ $760
20%
↓ $755
10%
↓ $750
6%
↓ $745
3%
↓ $740
7%
↓ $735
3%
↓ $730
1%
$13,583 Vol.
↑ $800
6%
↑ $795
4%
↑ $790
10%
↑ $785
22%
↑ $780
48%
↑ $775
81%
↓ $770
68%
↓ $765
36%
↓ $760
20%
↓ $755
10%
↓ $750
6%
↓ $745
3%
↓ $740
7%
↓ $735
3%
↓ $730
1%
Only prices achieved during the regular trading hours of the primary exchange on which the listed security trades (typically 9:30 AM – 4:00 PM ET) will be considered. Prices occurring during pre-market or after-hours trading will not qualify.
Prices will be used exactly as published by Pyth, without rounding.
In the event of a stock split, reverse stock split, or similar corporate action affecting the listed company during the listed time frame, this market will resolve based on split-adjusted prices as displayed on Pyth.
The target price will be adjusted proportionally to reflect any stock splits. Resolution will be based on the historical price data as shown on Pyth after any adjustments have been applied.
The resolution source for this market is Pyth — specifically, the S&P 500 (SPY) "High" and "Low" prices available at https://pythdata.app/explore/Equity.US.SPY%2FUSD, with the chart settings configured for 1-minute candles.
Historical 1-minute candles may be accessed by appending a Unix timestamp (seconds) to the Pyth chart URL using the "t=" parameter. Any timestamp within the listed market time frame may be used to view the relevant candle data (e.g., https://pythdata.app/explore/Equity.US.SPY%2FUSD?t=1773432000)
If the relevant Pyth data is unavailable due to a system outage, data failure, or other technical disruption that prevents verification of the required 1-minute candle data, the official daily high/low price published by the primary exchange on which the listed security trades will be used to determine whether the listed price was reached during the applicable trading session.
Market Opened: Sep 21, 2026, 12:39 PM ET
Resolution Source
https://pythdata.app/explore/Equity.US.SPY%2FUSDResolver
0x65070BE91...Only prices achieved during the regular trading hours of the primary exchange on which the listed security trades (typically 9:30 AM – 4:00 PM ET) will be considered. Prices occurring during pre-market or after-hours trading will not qualify.
Prices will be used exactly as published by Pyth, without rounding.
In the event of a stock split, reverse stock split, or similar corporate action affecting the listed company during the listed time frame, this market will resolve based on split-adjusted prices as displayed on Pyth.
The target price will be adjusted proportionally to reflect any stock splits. Resolution will be based on the historical price data as shown on Pyth after any adjustments have been applied.
The resolution source for this market is Pyth — specifically, the S&P 500 (SPY) "High" and "Low" prices available at https://pythdata.app/explore/Equity.US.SPY%2FUSD, with the chart settings configured for 1-minute candles.
Historical 1-minute candles may be accessed by appending a Unix timestamp (seconds) to the Pyth chart URL using the "t=" parameter. Any timestamp within the listed market time frame may be used to view the relevant candle data (e.g., https://pythdata.app/explore/Equity.US.SPY%2FUSD?t=1773432000)
If the relevant Pyth data is unavailable due to a system outage, data failure, or other technical disruption that prevents verification of the required 1-minute candle data, the official daily high/low price published by the primary exchange on which the listed security trades will be used to determine whether the listed price was reached during the applicable trading session.
Resolution Source
https://pythdata.app/explore/Equity.US.SPY%2FUSDResolver
0x65070BE91...The S&P 500 closed at 7,764.70 on September 21, 2026, up 1.49% and within 0.4% of its August record of 7,798.99, after a three-day advance of nearly 2.8%. The primary driver of recent sentiment is the Federal Reserve’s unanimous 25-basis-point rate hike to a 3.75–4.00% target range on September 16, the first increase in more than three years, coupled with updated projections showing most officials expecting at least one additional move this year amid elevated inflation readings near 3.7% PCE. Easing oil prices toward $100 per barrel and a decline in the 10-year Treasury yield to 4.95% provided immediate support. Traders are monitoring lighter data releases this week, including the Richmond Fed manufacturing index, new home sales, durable goods orders, and University of Michigan sentiment, for signs of labor-market or inflation momentum that could influence near-term equity levels.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated

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