Rapid Micro Biosystems, Inc. (RPID) Institutional Ownership

Ownership Summary

Rapid Micro Biosystems, Inc. (NASDAQ:RPID) appears in 40 institutional 13F filings for the quarter ending December 2025.

• Their combined ownership stood at 31.7% of outstanding shares in December 2025, down from 32.9% in September 2025.
• They increased total shares held in Rapid Micro Biosystems by 2.76% from last quarter, and the number of investors in RPID increased 100.0% annually.
• Among the 40 funds, 26 bought more Rapid Micro Biosystems shares, 8 sold down, and 6 held their ground.
• Institutional investors collectively held 14.25Mn shares in Rapid Micro Biosystems as of December 2025, up by 383.43K shares quarter on quarter, and up 2.29Mn shares year over year.
• Bain Capital Life Sciences Investors, LLC is the top holder of Rapid Micro Biosystems as of December 31, 2025, with 8.43Mn shares representing 18.76% of outstanding stock.
• The most significant purchases of RPID for the quarter ending December 2025 came from CITADEL ADVISORS LLC (126.54K), 683 Capital Management, LLC (120.77K), MILLENNIUM MANAGEMENT LLC (116.5K), SUSQUEHANNA INTERNATIONAL GROUP, LLP (113.85K), Goldman Sachs Group Inc (110.61K).
• The largest sellers of Rapid Micro Biosystems for the quarter ending December 2025 were BlackRock, Inc. (327.2K), Schonfeld Strategic Advisors LLC (294.15K), Evernest Financial Advisors, LLC (75.23K), Northern Trust Corp (7.24K), RESOURCES MANAGEMENT CORP /CT/ /ADV (350).
• According to Business Quant data, leading holders of RPID for December 2025 are Bain Capital Life Sciences Investors, LLC (8.43Mn), ABG-WTT Global Life Science Capital Partners GP Ltd (1.85Mn), VANGUARD GROUP INC (978.78K), ADVENT INTERNATIONAL, L.P. (577.78K), Schonfeld Strategic Advisors LLC (352.43K), GEODE CAPITAL MANAGEMENT, LLC (217.57K), SUSQUEHANNA INTERNATIONAL GROUP, LLP (172.24K), BlackRock, Inc. (156.67K), CITADEL ADVISORS LLC (126.54K), Evernest Financial Advisors, LLC (125.0K).