예측 시장에서 유동성이 작동하는 방식
Liquidity is the single biggest predictor of whether a prediction market is accurate. A market with deep liquidity reprices instantly on new information and resists manipulation; a thin market can be moved by a single trader with $500 and an agenda.
예측 시장에서 유동성이 작동하는 방식
What "liquidity" actually means
Liquidity is the amount of capital sitting on the orderbook (or in the AMM pool) ready to trade. It determines two things: how tight the spread is between the best bid and best ask, and how much size you can trade before the price moves against you. A market with $10M of depth within one cent of mid-price is deeply liquid; a market with $500 total outstanding is not.
Why it matters for accuracy
Academic research on prediction markets consistently finds that accuracy scales with liquidity. Deep markets attract sharp traders who research questions carefully and arbitrage away mispricings. Thin markets are dominated by a handful of opinionated participants whose views may not reflect reality. This is why election markets on Polymarket and Kalshi (deep) consistently beat niche prediction sites (thin) even when the latter have more sophisticated user bases.
How thin markets get manipulated
If a market has only $2,000 of depth, a trader with $5,000 can move the price from 40¢ to 60¢, making it look like the market now thinks the event is much more likely when in reality one person just bought a lot of shares. Journalists and political operatives have occasionally done this to generate headlines. The defense is simple: always check volume and open interest before treating a price as signal.
이 시리즈의 관련 가이드
예측 시장에서 내재 확률이란 무엇인가?
0.62달러에 거래되는 YES 주식이 시장 내재 확률 약 62%를 의미하는 이유, 그리고 이 해석이 무너지는 경우.
시리즈예측 시장의 오더북 vs AMM
Kalshi와 Polymarket은 오더북을 사용하고, 초기 온체인 플랫폼은 자동화 마켓메이커(AMM)를 사용한다. 각 방식이 위험을 다르게 가격에 반영하는 방법.
시리즈LMSR(로그 시장 채점 규칙)이란 무엇인가?
Robin Hanson이 예측 시장을 위해 설계한 마켓메이커 공식, 손실을 제한하는 이유, 그리고 여전히 사용하는 곳.