TOTAL VOLUME:
$154.4b
24H VOL:
$230,589,906
24H TRANSACTIONS:
2,984,028,936
OPEN INTEREST:
$1,885,293,300
410,482
Markets across
40,213
events
MATCHED EVENTS:
4,340
PLATFORM COVERAGE:
5
Polymarket:
37%
VS.
Kalshi:
63%
Closed: Oct 30, 4:00 PM EST
Kalshi
This event tracks the performance of a major stock market index on a specific date, dividing possible outcomes into narrow numerical ranges. Each range represents a different potential closing value for the index, allowing participants to speculate on where the market might land at the end of the trading day.
Each market resolves based on the end-of-day value of the S&P 500 index on October 30, 2026, falling within one of several predefined numerical ranges. If the index closes within a specific range at market close, the corresponding market resolves to Yes; all others resolve to No. All markets close on October 30, 2026, and expire either when the index value is officially released or one week after the close date, whichever occurs first. The Exchange has modified the Source Agency and Underlying for indices markets as per the Kalshi Rulebook.
Currently, it's difficult to directly compare prediction market odds to traditional analyst forecasts for the S&P 500. However, generally, prediction markets often incorporate a wider range of information and perspectives than traditional forecasts. Analysts typically base their predictions on economic models and company-specific data, while this market reflects the collective wisdom of traders who are incentivized to accurately assess the probability of different outcomes. If analyst consensus suggests a specific price range, observing how this market prices similar ranges can offer a unique perspective on market expectations.
On Kalshi, this market is priced through a continuous order book where traders buy and sell contracts corresponding to different S&P 500 price ranges. The price of each contract reflects the market's assessment of the probability of the S&P 500 falling within that range on Oct 30, 2026. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. As more traders participate, the prices adjust to reflect new information and changing sentiment. Traders are essentially betting on their belief about the future price of the S&P 500, and their collective actions determine the market prices you see on the dashboard.
This market resolves around Oct 30, 2026, based on the official closing price of the S&P 500 index at 4pm EDT on that date. The outcome will be determined by comparing the actual S&P 500 price to the ranges offered in the market. The contract corresponding to the range containing the actual price will be considered the winning outcome. The result will be verified against credible public reporting of the S&P 500’s closing price, ensuring a transparent and reliable resolution process.
Numerous economic and geopolitical events could significantly impact this market between now and Oct 30, 2026. Major factors include macroeconomic data releases (such as inflation reports, GDP growth, and employment figures), Federal Reserve policy decisions regarding interest rates, and unexpected geopolitical shocks. Corporate earnings reports from major S&P 500 companies can also drive price movements. Furthermore, shifts in investor sentiment, triggered by news events or broader market trends, could cause traders to reassess their positions and adjust prices in this market.