Hang Seng (HSI) Up or Down on August 31? Odds & Prediction Markets

Name: Hang Seng (HSI) Up or Down on August 31?
Start: 2026-08-28T12:01:07.000Z
End: 2026-08-31T20:00:00.000Z

Description

This market will resolve to "Up" if the official Hang Seng Index closing price for Hang Seng (HSI) on Monday, August 31, 2026 is higher than the official Hang Seng Index closing price for HSI on the most recent prior trading day. This market will resolve to "Down" if the official Hang Seng Index closing price for Hang Seng (HSI) on Monday, August 31, 2026 is lower than the official Hang Seng Index closing price for HSI on the most recent prior trading day. E.g., ordinarily, a market on Monday would refer to the previous Friday for its most recent closing price, unless that Friday were a market holiday, in which case it would refer to Thursday, or the next most recent trading day. If the two specified closing prices are exactly equal, this market will resolve 50-50. Note that all figures will be rounded to the nearest cent using standard rounding. If HSI does not trade at all during the regular session, the market will resolve 50-50. If either of the relevant days are shortened (for example, due to a market holiday schedule), the official closing price published by Hang Seng Index for that shortened session will still be used for resolution. If either of the relevant days have no official closing price (for example, due to a trading halt into the market close, system issue, delisting, or other disruption), the market will use the last valid on-exchange trade price of the regular session as the effective closing price. The resolution source for this market is the Wall Street Journal, specifically the Close values published by the WSJ under "Historical Prices". US: https://www.wsj.com/market-data/stocks EMEA: https://www.wsj.com/market-data/stocks/emea ASIA: https://www.wsj.com/market-data/stocks/asia

Polymarket

This market will resolve to "Up" if the official Hang Seng Index closing price for Hang Seng (HSI) on Monday, August 31, 2026 is higher than the official Hang Seng Index closing price for HSI on the most recent prior trading day. This market will resolve to "Down" if the official Hang Seng Index closing price for Hang Seng (HSI) on Monday, August 31, 2026 is lower than the official Hang Seng Index closing price for HSI on the most recent prior trading day. E.g., ordinarily, a market on Monday would refer to the previous Friday for its most recent closing price, unless that Friday were a market holiday, in which case it would refer to Thursday, or the next most recent trading day. If the two specified closing prices are exactly equal, this market will resolve 50-50. Note that all figures will be rounded to the nearest cent using standard rounding. If HSI does not trade at all during the regular session, the market will resolve 50-50. If either of the relevant days are shortened (for example, due to a market holiday schedule), the official closing price published by Hang Seng Index for that shortened session will still be used for resolution. If either of the relevant days have no official closing price (for example, due to a trading halt into the market close, system issue, delisting, or other disruption), the market will use the last valid on-exchange trade price of the regular session as the effective closing price. The resolution source for this market is the Wall Street Journal, specifically the Close values published by the WSJ under "Historical Prices". US: https://www.wsj.com/market-data/stocks EMEA: https://www.wsj.com/market-data/stocks/emea ASIA: https://www.wsj.com/market-data/stocks/asia

Frequently asked questions

On Polymarket, the Hang Seng direction market dashboard displays real-time odds, price history, and 24-hour volume of $33. It shows how traders on Polymarket are positioning around the prospects for the Hang Seng index moving up or down by the close on Aug 31, 2026. This single-venue view reflects collective sentiment without aggregation from other venues.

This market resolves around Aug 31, 2026, with the outcome confirmed once the Hang Seng index’s closing level that day is verifiable from credible public reporting. Traders will see the final settlement based on the index’s official close, determining whether contracts for “Up” or “Down” are paid out.

Key events that could shift this market include Chinese economic data releases, changes in monetary policy from regional banks, geopolitical developments impacting Asian markets, and major corporate earnings surprises from constituents of the Hang Seng index. Sudden shifts in global risk sentiment or currency movements may also cause rapid repricing as traders adjust positions ahead of Aug 31, 2026.

Hang Seng (HSI) Up or Down on August 31?

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