On October 9, two 40x whales opened short positions on $BTC around $81,700, totaling $21.62 million, with liquidation prices of $82,731 and $82,959. At the time of writing, the rebound had pushed both to the brink of liquidation. BTC hit a high of $83,453 that day, putting both levels within reach. I don’t know whether they got out or got liquidated, but with a 40x position, “just ride it out” has never been an option.