Strategy Inc (MSTR) stock jumps after fresh bitcoin buy, flags $17.4 billion Q4 paper loss
New York, January 5, 2026, 10:55 (ET) — Regular session Shares of Strategy Inc were up 5.5% at $165.84 on Monday after the company disclosed fresh bitcoin purchases and a preliminary fourth-quarter mark-to-market hit on its digital assets. SEC The update matters because Strategy has become one of Wall Street’s most liquid proxies for bitcoin, with the stock often amplifying…