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When will nuclear fusion be achieved?

Prediction markets currently give a 52% probability that When will nuclear fusion be achieved?. This contract trades at 52¢ on Kalshi, closing January 1, 2040. The market prices a 57% probability of fusion by 2040 with a modest 6.5% annualized yield for Yes holders, but the extremely high realized volatility of 248% and vol ratio of 9.58 suggest significant pricing uncertainty despite the long 5,007-day runway.

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52¢
Bid/Ask 52/57¢·Spread 5¢·Vol $0·OI $3,823.81·Closes Jan 1, 2040·4993d remaining
KXFUSION-40-JAN01
7-day price150 snapshots · 10 regime
56¢52¢ current
Apr 848¢Apr 29

Analysis

14d ago

The market prices a 57% probability of fusion by 2040 with a modest 6.5% annualized yield for Yes holders, but the extremely high realized volatility of 248% and vol ratio of 9.58 suggest significant pricing uncertainty despite the long 5,007-day runway. Zero 24-hour volume combined with $3,789.81 open interest indicates severe illiquidity, making the 4¢ spread potentially misleading as a true execution cost. The recent 4¢ price rise over seven days (49¢ to 53¢) represents an 8% move that warrants scrutiny given the low information arrival rate of 0.5/hour, possibly reflecting thin-market noise rather than fundamental repricing.

Resolution rules

If nuclear fusion is achieved before Jan 1, 2040, then the market resolves to Yes.

Indicators

IY (No) 7.9%
Adj IY 4%
CRI 1
Overround 0.3%
▶ Full indicator table (5)
IndicatorValue
IY (Yes)6.7%
IY (No)7.9%
Adj IY4%
CRI1
Overround0.3%

Regime

Label
neutral
Score
0.341
Spread
5¢
Computed
5/1/2026, 11:08:36 AM
Observability lowEvent type scientific
Indicators computed 5/1/2026, 11:08:29 AM

Trade

View on kalshisf trade KXFUSION-40-JAN01 yes 100

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