Strategy Inc (MSTR) Stock After Hours Today (Dec. 18, 2025): Late Move, Bitcoin Link, Fresh Catalysts—and What to Watch Before Friday’s Open
Strategy Inc. (NASDAQ: MSTR)—the company formerly known as MicroStrategy and now widely treated by markets as a “Bitcoin proxy”—finished Thursday, December 18, 2025 in the red, then ticked higher in early after-hours trading as investors weighed a familiar mix of drivers: Bitcoin’s pullback into the mid‑$80,000s, ongoing debate over dilution and financing costs, and a looming index-policy decision that could reshape passive-fund demand in 2026. After the closing bell, MSTR traded at about $159.45 (+0.76%) in delayed after-hours quotes at 5:07 p.m. ET, after ending the regular session at $158.24. MarketWatchDuring Thursday’s regular session, MSTR was volatile—trading roughly between $157.47