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 16, 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. The resolution depends solely on the index's official closing value at the specified time.
The event resolves based on the end-of-day value of the S&P 500 index on October 16, 2026, at 4pm EDT, with 30 distinct outcome ranges covering values from below 7,400 up to above 8,100. Each range-specific market resolves to "Yes" if the closing index value falls within its defined bounds. All markets close on October 16, 2026, and expire either upon the first official release of the index data or one week after the closing date, whichever occurs sooner. The Exchange has applied specific modifications to the Source Agency and Underlying for index markets as detailed in the Kalshi Rulebook.
Currently, it's difficult to draw direct comparisons between this market and traditional analyst forecasts, as those forecasts are often point estimates or broad ranges published at specific intervals. However, prediction markets like this one aggregate the wisdom of the crowd, potentially offering a more nuanced and up-to-date view of future S&P 500 price movements. Analysts often rely on models and assumptions, while this market reflects the collective judgment of traders willing to put capital behind their beliefs. It will be interesting to see how the market's predictions evolve as we approach Oct 16, 2026.
On Kalshi, this market is priced through a continuous double auction, meaning traders buy and sell contracts representing different price ranges for the S&P 500. The price of each contract reflects the probability of that price range being correct on October 16, 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 the collective assessment of the market. The market depth, shown on the dashboard, indicates the volume available at different price points, providing insight into potential price movements and liquidity. This dynamic pricing mechanism allows for a real-time assessment of market sentiment.
This market resolves around Oct 16, 2026, specifically at 4:00 PM EDT on that date. The outcome will be determined by the actual closing price of the S&P 500 index at that time, verified against credible public reporting. The contract corresponding to the price range that includes the actual closing price will be considered the winning outcome. Traders who held contracts for that price range will receive a payout, while those holding contracts for other ranges will not. The market's resolution is based on a widely recognized and publicly available data point.
Numerous economic and geopolitical events could significantly impact this market between now and Oct 16, 2026. Major factors include shifts in interest rate policy by the Federal Reserve, unexpected changes in inflation data, and significant geopolitical events that could disrupt global markets. Corporate earnings reports, particularly from large S&P 500 companies, will also be closely watched. Any news that alters investor sentiment regarding the overall health of the US economy or future corporate profitability could lead to substantial price movements in this market. Unexpected shocks to the global supply chain could also play a role.