What Happens to My Polymarket Bot When a BTC Market Resolves Unexpectedly

What Happens to My Polymarket Bot When a BTC Market Resolves Unexpectedly

This one caught me off guard.

I was running my bot on BTC 5 minute and 15 minute markets on Polymarket. These are fast markets. A new one opens every few minutes. Price goes above or below a level, market resolves, next one starts. The cycle is constant and at first it felt perfect for a market maker. High frequency, steady volume, predictable structure.

Then I learned the hard way that fast markets resolve fast. Faster than I expected. And my bot was not ready for it.

Here is what happened. I had open orders on both sides of a 5 minute BTC market. The market was still showing time remaining on my dashboard. But BTC moved hard in one direction, the resolution condition was met, and the market closed early. My buy side had already filled. My sell side had not. The market resolved before I could balance the position.