TOTAL VOLUME:
$66b
24H VOL:
$398,877,831
24H TRANSACTIONS:
647,445,881
OPEN INTEREST:
$1,477,629,845
622,934
Markets across
14,083
events
MATCHED EVENTS:
1,257
PLATFORM COVERAGE:
4
Polymarket:
49%
VS.
Kalshi:
51%
Time left: 16h:25m:18s
Nikkei 225 (NIK) Up or Down on June 17?
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Description
This event group tracks whether the Nikkei 225 Index closes higher or lower on June 17, 2026 compared to the prior trading day (Polymarket), while Kalshi offers separate binary markets on whether the index reaches various price thresholds (¥70,000–¥80,000) at any point during June 2026. The two platforms are measuring fundamentally different things: a daily directional move versus absolute price levels.
PredictionHero - Resolution Divergence Alerts (RDA)
Divergence Detected
Issue:
Polymarket and Kalshi measure different dimensions of the Nikkei 225 in June 2026. Polymarket focuses on directional movement on a single date (June 17); Kalshi focuses on absolute price thresholds reached at any point during the month. These are distinct event types and cannot be unified.Hero Tip:
Treat these as separate markets with different risk profiles. Polymarket requires precise timing and prior-day data; Kalshi requires only that a price level be touched once during June. Confirm your trading thesis before entering either position.Critical Divergence Points:
Polymarket:
Directional day-over-day comparison on June 17, 2026. Resolves Up if closing price > prior trading day close; Down if < prior close; 50-50 if equal or no trade. Source: WSJ Historical Prices (Asia region). Handles shortened sessions and trading halts by using last valid on-exchange trade price.Kalshi:
Binary threshold markets: Yes if Nikkei 225 reaches or exceeds specified price level (¥70,000, ¥71,000, ... ¥80,000) at any point during June 2026. No explicit source cited; timing is 'in June 2026' (any trading day, any time).
Polymarket
This market will resolve to "Up" if the official Nikkei 225 Index closing price for Nikkei 225 (NIK) on Wednesday, June 17, 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 Wednesday, June 17, 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
Kalshi
Resolution is based on the Nikkei 225 index value as reported by Trading View in Japanese yen, with no currency conversion applied. Each price level threshold (¥70,000 through ¥80,000) resolves independently: if the index reaches or exceeds that level at any point during June 2026, the corresponding outcome resolves to Yes; otherwise it resolves to No. The index value need only touch the threshold momentarily—sustained levels are not required. Index values are evaluated to two decimal places. Post-expiration revisions to the underlying data are not considered. If no data is available by the expiration date, all outcomes except "No data" or "None" resolve to No.
Frequently asked questions
Prediction market odds distill collective trader intelligence into a single probability, often diverging from traditional analyst consensus because markets price in real-time information and incentivize accuracy through financial stakes. While sell-side equity strategists may publish quarterly outlooks on the Nikkei, this market updates continuously as breaking news, earnings surprises, or macroeconomic data emerge. Traders who monitor both channels—prediction odds and published research—can spot when the crowd disagrees with consensus and position accordingly, though neither source guarantees predictive accuracy.
Kalshi and Polymarket can show different implied probabilities for the same outcome because of liquidity, fee structure, participant mix, and how each venue defines the contract. Each platform operates under distinct regulatory frameworks, user bases, and liquidity pools, causing identical events to trade at different implied probabilities. Polymarket and Kalshi may also define their Nikkei outcomes with slightly different settlement windows or data sources, leading traders on one venue to price in nuances the other ignores. Arbitrage traders exploit these spreads, though transaction costs and withdrawal delays often prevent perfect convergence. Monitoring both venues reveals where smart money is positioning and highlights potential mispricings.
This market resolves around Jul 1, 2026, with the outcome confirmed once the Nikkei 225's closing level for the specified date is verifiable from credible public sources. The resolution hinges on whether the index closes above or below its prior session's close, a straightforward binary outcome that eliminates ambiguity. Early resolution is possible if official market data becomes available ahead of the formal end date, allowing traders to exit positions and claim winnings sooner.
Bank of Japan policy announcements, US Federal Reserve decisions, and earnings reports from major Nikkei constituents—Sony, Toyota, Softbank—are primary catalysts. Geopolitical tensions, currency fluctuations in the yen, and broader Asia-Pacific equity momentum also shift trader conviction. Economic data releases, including Japan's inflation and employment figures, can trigger sharp repricing hours before the market close. Traders monitoring these signals often adjust positions preemptively, making this market highly responsive to scheduled events and surprise news flow.
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