Whale
Last reviewed 2026-08-07
Whale — definition
A trader with enough capital to single-handedly move a market's price.
Whales aren't necessarily sharp. A large but uninformed bet can distort a thin market for hours or days until other traders take the other side.
Spotting whales matters most in low-volume contracts.
Learn more: How prediction markets work
See also
Frequently asked questions
What does whale mean in prediction markets?
A trader with enough capital to single-handedly move a market's price.
How does whale work in practice?
Whales aren't necessarily sharp. A large but uninformed bet can distort a thin market for hours or days until other traders take the other side.
Sources & further reading
- CFTC — Event contracts explainedU.S. Commodity Futures Trading Commission
- Kalshi — how prices and settlement workKalshi
- UMA Optimistic Oracle documentationUMA Protocol
Last reviewed 2026-08-07 · CollegePredictionMarkets.com