Renaissance Technologies LLC, a prominent quantitative hedge fund, significantly increased its holdings in MicroStrategy Inc. (MSTR) during the first quarter of 2026. According to SEC 13F filings, the fund held 2,130,881 shares valued at approximately $231 million as of March 31, 2026. This marks a 123% increase from the previous quarter, where it held 957,332 shares valued at $137 million. Based on the stock price at the time of the report, the additional shares acquired by Renaissance Technologies are estimated to have a market value of about $205 million, bringing the total value of its MicroStrategy holdings to approximately $372 million.