Will the U.S. confirm that aliens exist before July 2026
Leader sits at 35% across 4 bound outcomes, runner-up at 28%. This is a winner-take-all market — the headline is the leader’s price, not an arithmetic mean.
Leader probability
Before Jan 20, 2029
Outcomes
4
winner-take-all
Runner-up
28¢
Before 2028
Spread
7pp
contested
24h volume
$119K
liquid
Closes
Jan 20, 2029
970 days
Venue
Kalshi
4 bound
30-day trend
Bracket family
How the bracket ladder is priced.
Each row is one outcome on the venue. Sorted by 24h volume — the heaviest book is at the top.
Cluster 1
Will the U.S. confirm that aliens exist
Will the U.S. confirm that aliens exist before 2027?: Before 2027
KXALIENS-27
Will the U.S. confirm that aliens exist in 2026?: Before September 2026
KXALIENS-27-26SEP
Will the U.S. confirm that aliens exist in 2029?: Before Jan 20, 2029
KXALIENS-27-29
Will the U.S. confirm that aliens exist in 2028?: Before 2028
KXALIENS-27-28
What moved the line
- May 20Before Jan 20, 2029↑7pp33→40¢ · Kalshi
- May 21Before Jan 20, 2029↓3pp40→37¢ · Kalshi
- May 19Before 2028↑3pp25→28¢ · Kalshi
- May 24Before 2028↓3pp29→26¢ · Kalshi
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These markets stopped trading. Last odds and any captured outcome are shown above — full settlement detail lives at the venue.
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In general
How we compute these odds
SimpleFunctions aggregates live prediction-market contracts from Kalshi and Polymarket. Each slug groups contracts that resolve on the same underlying event, identified by venue event_id.
For binary slugs, the headline probability is the liquidity-weighted mid-price across all bound contracts. For multi-outcome slugs (e.g. elections with 3+ candidates), the headline is the leader’s price; we never arithmetically average disjoint outcomes — that would produce a number with no real-world meaning.
Snapshots refresh every 5 minutes during market hours; daily aggregates are computed at 04:00 UTC. The 30-day sparkline is drawn from per-ticker daily means stored in market_indicator_daily; 24h delta and movement events are derived from the same source.
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