The Dutch asset management giant quietly added 13,291 shares of the world's largest corporate Bitcoin holder during Q2 2026Robeco Institutional Asset Management, one of Europe’s largest asset managers, bumped up its position in Strategy Inc by 11% during the second quarter of 2026. The firm now holds 133,755 shares of the Bitcoin treasury company formerly known as MicroStrategy, according to its 13F filing submitted on July 21. Strategy held 818,334 Bitcoin as of May 3, 2026, representing 22% growth in its Bitcoin stack year-to-date. The broader institutional pictureQ1 2026 saw several large asset managers adjusting their Strategy Inc exposure amid volatile market conditions. The 13F filing system requires institutional investment managers with at least $100 million in qualifying assets to disclose their holdings quarterly.