MarketsFebruary 26, 2026ยท2 min readยท25 views
Bitcoin Flash Crashed to $48K on a DEX While Everyone Else Was Partying at $67K

Here's a fun one. While Bitcoin was busy rallying from $64K to $69K โ its strongest intraday move in weeks โ someone on Lighter, a decentralized perps exchange, decided to market sell roughly 1,000 BTC in a single order. That's about $67 million worth. On a DEX with the liquidity depth of a kiddie pool.
You can guess what happened next.
The price on Lighter nosedived to $47,000. A full 30% crash that lasted all of a few seconds before bouncing right back. Meanwhile, every other exchange in the world kept chugging along at $67K like nothing happened.
This is essentially what happens when you try to dump a whale-sized order on an exchange that doesn't have whale-sized liquidity. Think of it like trying to flush a bowling ball down a toilet โ the plumbing just isn't built for that.
Lighter, for context, is a relatively new DEX that's been trying to compete with Hyperliquid. It actually hit $292 billion in monthly volume back in November, but activity tanked hard after its token airdrop. Classic farm-and-dump behavior from traders who showed up for the rewards, took the bag, and left. Monthly volume is now down to $70 billion.
The lesson here isn't complicated: liquidity matters. A $67 million sell order on Binance wouldn't even make the price flinch. On a thin DEX order book, it causes a 30% crash. Same asset, wildly different outcome.
If you're trading on newer DEXs, just know that the price you see isn't always the price you'll get โ especially if you're the biggest fish in a very small pond.
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