The S&P 500 closed at 7,650.50 on September 18 after a tech-led rebound on September 17 that offset initial losses from the Federal Reserve’s September 16 decision to raise the federal funds target range by 25 basis points to 3.75–4.00 percent. The hike, the first in three years and accompanied by updated projections, reinforced expectations for a higher-for-longer policy path amid persistent inflation and resilient growth. With the index trading roughly 2 percent below its August peak of 7,816.70, the upcoming week features limited U.S. data—Richmond Fed manufacturing, new home sales, durable goods orders, and final Michigan consumer sentiment—leaving scope for moves driven by Treasury yields near 4.95 percent, oil prices, and any geopolitical developments.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated↑ $795
10%
↑ $790
8%
↑ $785
8%
↑ $780
8%
↑ $775
14%
↑ $770
44%
↑ $765
83%
↓ $760
85%
↓ $755
45%
↓ $750
22%
↓ $745
18%
↓ $740
18%
↓ $735
16%
↓ $730
5%
$773 Vol.
↑ $795
10%
↑ $790
8%
↑ $785
8%
↑ $780
8%
↑ $775
14%
↑ $770
44%
↑ $765
83%
↓ $760
85%
↓ $755
45%
↓ $750
22%
↓ $745
18%
↓ $740
18%
↓ $735
16%
↓ $730
5%
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 18, 2026, 6:01 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 7,650.50 on September 18 after a tech-led rebound on September 17 that offset initial losses from the Federal Reserve’s September 16 decision to raise the federal funds target range by 25 basis points to 3.75–4.00 percent. The hike, the first in three years and accompanied by updated projections, reinforced expectations for a higher-for-longer policy path amid persistent inflation and resilient growth. With the index trading roughly 2 percent below its August peak of 7,816.70, the upcoming week features limited U.S. data—Richmond Fed manufacturing, new home sales, durable goods orders, and final Michigan consumer sentiment—leaving scope for moves driven by Treasury yields near 4.95 percent, oil prices, and any geopolitical developments.
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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