Institutional investors increased their exposure to Strategy (MSTR) by approximately $1.2 billion during the second quarter of 2026, according to the company's latest 13F filings. Twelve of Strategy's top 15 investors expanded their MSTR positions during the reporting period, with Goldman Sachs, Capital International Investors, and BlackRock Asset Management Ireland recording the largest quarterly additions.

Strategy also remained the largest corporate holder of Bitcoin, with more than 840,000 BTC on its balance sheet as of August 2026.

The updated shareholder data was reported by Wu Blockchain on X, drawing on Strategy's most recent 13F disclosures. The filings covered institutional ownership changes through June 30, 2026, and showed that most leading investors increased their positions during the reporting period, underscoring how closely the stock is being watched as a public-market proxy for Bitcoin exposure.

Institutional buying dominates Strategy shareholder filings

The total shareholding value of the top four shareholders rose by approximately $1.2 billion, a rise recorded across the board at major investment firms. Only three institutions reduced their MSTR exposure.

Capital International Investors remained Strategy's largest institutional shareholder during the quarter, with a position of about $3.49 billion and a 9.4% ownership stake. The firm added roughly $346 million in additional holdings.

Vanguard also expanded its exposure through two separate investment entities. Vanguard Portfolio Management added about $61 million during Q2, while Vanguard Capital Management increased its position by a further $86 million.

Goldman Sachs leads major MSTR accumulation

Goldman Sachs recorded the largest quarterly increase among Strategy's major shareholders. The investment bank added approximately $407 million worth of MSTR shares, lifting its total position to nearly $555 million by quarter-end.

BlackRock expanded its exposure through multiple institutional portfolios. BlackRock Institutional Trust increased its holdings by about $84 million, and BlackRock Asset Management Ireland added another $98 million during the quarter.

State Street Investment Management increased its MSTR position by approximately $51 million, while Morgan Stanley Investment Management posted a smaller addition of about $15 million. The filings showed continued participation from several large Wall Street asset managers.

The latest market data placed MSTR at around $93 during August trading. The stock has remained closely tied to Bitcoin's broader market performance, and the scale of institutional ownership changes in the quarter reflects continued attention to Strategy's balance-sheet strategy rather than just its operating business.

Bitcoin treasury strategy anchors institutional appeal

Not every institutional investor increased exposure during the quarter. Capital Research Global Investors recorded the largest reduction among top shareholders, with holdings declining by about $462 million. UBS Financial Services also reduced its position, trimming roughly $142 million worth of MSTR shares, and Geode Capital Management posted a comparatively small reduction of around $5 million.

Despite those reductions, buying activity remained dominant across the shareholder list. Twelve institutional investors expanded their positions before the quarter closed, creating a strong positive balance across reported ownership changes.

Wu Blockchain connected the filings to Strategy's broader Bitcoin treasury strategy. As of August 2026, Strategy held more than 840,000 BTC on its balance sheet, remaining the world's largest corporate Bitcoin holder during the reporting period. That scale helps explain why quarterly 13F updates continue to draw attention: changes in MSTR ownership can offer a snapshot of how major asset managers are positioning around one of the market's most closely followed Bitcoin-linked equities.