Bitcoin pushed to a fresh eight-month high of $86,000 on Monday, extending a rally that forced bearish traders out of their short positions and drew fresh leverage bets back in. Roughly $750 million in bearish crypto derivative positions were liquidated as bitcoin cleared $82,000, a level that capped prices since August, CoinGlass data shows. When short positions are liquidated, exchanges execute buy orders to close them, adding fuel to an already upward market.