Why Volatility Halts Exist

(And How They Screw You Anyway)

Traders caught in QMM yesterday saw the dark side of volatility halts—frozen bids, forced liquidations, and 100%+ moves that felt like time travel. But these halts weren’t designed to ruin your trade. They were born out of panic.

Flash back to 2010’s “Flash Crash,” when the Dow dropped 10% intraday. No news, no warning. Just fat fingers and systemic panic. So, the exchanges introduced halt rules: if a stock moves X% in Y minutes, it pauses. The goal? Prevent a market-wide freak-out.

In theory, it’s a breather. In reality, halts stack panic—especially for shorts. You can’t get out. Price reopens +30%, and your broker might be exiting for you.

So what do you do? Size for chaos. Assume your stop won't work. Risk is always managed on entry, not exit.

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