Lesson Learned: Polymarket Odds Can Collapse Quicker Than Spot Market

Been dabbling in some of the Polymarket event markets lately, specifically around political outcomes and crypto price ranges. One thing that’s really hammered home for me recently is how quickly the odds can move and the liquidity can dry up, much faster than what you’d typically see in a spot market for, say, $BTC. I got caught out on a specific 'Will X political event happen by Y date?' market where the polls shifted dramatically overnight, and I woke up to my position being down 70% with virtually no one willing to buy at anything near my entry. In a spot market, you usually have some opportunity to manage risk, even if it's painful, but here, the resolution of uncertainty can just evaporate your capital. It really feels like an options market without the same level of depth, and I definitely underestimated that rapid illiquidity once the narrative starts to shift. Now I'm much more cautious about sizing into these, especially for longer-dated events where there's more time for sentiment to swing wildly. It's a different beast than just trading price action.