Susquehanna doubles stake in Strategy to $232M

Susquehanna International Group, one of the largest quantitative trading firms on the planet, has roughly doubled its equity position in Strategy Inc. to a stake now worth $232 million. The move puts SIG among the most prominent institutional backers of the company formerly known as MicroStrategy, which has become Wall Street’s de facto Bitcoin proxy. SIG’s 13F filing, dated May 15, 2026, disclosed ownership of 1,282,636 shares of Strategy Inc. valued at approximately $160 million as of March 31. The current $232 million valuation reflects either additional share purchases since the filing cutoff date, subsequent price appreciation, or both. Part of a much bigger wave SIG isn’t acting alone. Institutional investors collectively boosted their MSTR positions by roughly $4.6 billion during the first quarter of 2026, a 27% jump based on aggregated 13F data. The pattern from SIG has been building for a while. In early 2025, the firm was actively accumulating MSTR shares while simultaneously trimming positions in companies like Super Micro Computer. Strategy’s Bitcoin playbook keeps humming Strategy Inc., led by Executive Chairman Michael Saylor, has spent years perfecting a simple but a...