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 moves in the cryptocurrency. The company has regularly raised cash by selling securities to add to its bitcoin holdings, putting its financing pace and potential dilution in focus for equity investors. SEC Strategy also used the filing to preview the