Nikkei 225 (NIK) Up or Down on September 28? Odds & Prediction Markets

Name: Nikkei 225 (NIK) Up or Down on September 28?
Start: 2026-09-25T12:00:54.000Z
End: 2026-09-28T20:00:00.000Z

Description

This market will resolve to "Up" if the official Nikkei 225 Index closing price for Nikkei 225 (NIK) on Monday, September 28, 2026 is higher than the official Nikkei 225 Index closing price for NIK on the most recent prior trading day. This market will resolve to "Down" if the official Nikkei 225 Index closing price for Nikkei 225 (NIK) on Monday, September 28, 2026 is lower than the official Nikkei 225 Index closing price for NIK 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 NIK 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 Nikkei 225 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 Nikkei 225 Index closing price for Nikkei 225 (NIK) on Monday, September 28, 2026 is higher than the official Nikkei 225 Index closing price for NIK on the most recent prior trading day. This market will resolve to "Down" if the official Nikkei 225 Index closing price for Nikkei 225 (NIK) on Monday, September 28, 2026 is lower than the official Nikkei 225 Index closing price for NIK 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 NIK 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 Nikkei 225 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 dashboard for the Nikkei 225 direction market displays the current odds of the Nikkei 225 closing up or down on September 28. It also provides a price history chart, allowing you to see how the market has traded over time. You can view the 24-hour trading volume, which currently stands at $10, and the total volume traded to date, which is $10. This allows traders to assess market sentiment and activity related to the Nikkei 225’s future performance.

Currently, prediction market participants are indicating a strong belief that the Nikkei 225 will close up on September 28. This contrasts with some analyst forecasts, which present a more mixed outlook, with a range of predictions regarding potential economic headwinds and their impact on Japanese equities. While analysts consider a wider range of factors, this market represents a distilled view of what traders believe will happen, based on their willingness to put capital behind their predictions. It’s important to note that market sentiment can shift rapidly based on new information.

This market resolves around Sep 28, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The resolution will be based on the official closing value of the Nikkei 225 index on September 28. If the index closes higher than its opening value, the 'Up' outcome will be considered correct. Conversely, if it closes lower, the 'Down' outcome will prevail. Traders should monitor official sources for the final closing value to understand the market’s resolution.

Several factors could significantly influence this market before Sep 28, 2026. Major economic data releases from Japan, such as GDP figures or inflation reports, could shift investor sentiment. Unexpected geopolitical events or changes in global market conditions, including movements in US Treasury yields or currency exchange rates, could also play a role. Furthermore, any significant corporate news related to major companies within the Nikkei 225 index could impact trading activity in this market. Traders should closely monitor these developments for potential catalysts.

Nikkei 225 (NIK) Up or Down on September 28?

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