Robeco 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.

The position is worth approximately $11.63 million as of June 30. Not exactly a bet-the-farm move for a firm managing hundreds of billions in assets, but the direction of the trade tells a more interesting story than its size.

What the filing actually shows

Robeco added 13,291 shares during the quarter, a move that pushed its total holdings from a previously reported range of roughly 120,464 to 121,000 shares up to the current 133,755. That’s an 11.03% increase quarter-over-quarter.

Those 133,755 shares represent just 0.0143% of Strategy’s outstanding stock.

Strategy held 818,334 Bitcoin as of May 3, 2026, representing 22% growth in its Bitcoin stack year-to-date. That makes it the largest corporate holder of Bitcoin on the planet. The company has essentially transformed itself from an enterprise software firm into what it calls a “Bitcoin Treasury Company.”

The broader institutional picture

Q1 2026 saw several large asset managers adjusting their Strategy Inc exposure amid volatile market conditions. The fact that Robeco chose to increase rather than trim during Q2 suggests the volatility didn’t spook them enough to change course.

Robeco is headquartered in Rotterdam. The 13F filing system requires institutional investment managers with at least $100 million in qualifying assets to disclose their holdings quarterly.

It’s worth noting that no major cryptocurrency media outlets had published dedicated coverage of Robeco’s filing prior to its circulation on social media.

What this means for investors

Strategy’s stock price is heavily correlated with Bitcoin’s price, but it also trades at a premium (or sometimes discount) to its net asset value in Bitcoin. Increased institutional demand for the stock can push that premium higher, creating a feedback loop where Strategy can raise capital more cheaply, buy more Bitcoin, and attract even more institutional investors.

Robeco’s 0.0143% stake means it can exit without moving the market at all. For Robeco, buying a small slice of Strategy’s 818,334 Bitcoin hoard appears to be a calculated way to get Bitcoin exposure through regulated, familiar channels, without having to deal with custody, wallets, or other operational considerations of direct crypto ownership.