Rapid Micro Biosystems, Inc. (RPID) Institutional Ownership

Ownership Summary

Rapid Micro Biosystems, Inc. (NASDAQ:RPID) has 40 institutional investors with active 13F positions as of 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 RPID by 2.76% quarter over quarter, and investors in Rapid Micro Biosystems increased 100.0% from a year ago.
• During the quarter, 26 of these 40 funds increased positions in RPID, 8 reduced exposure, and 6 held steady.
• The aggregate institutional position in Rapid Micro Biosystems amounted to 14.25Mn shares 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 holds the largest position in RPID at 8.43Mn shares as of December 31, 2025, or 18.76% of shares outstanding.
• The biggest buyers of Rapid Micro Biosystems for the quarter ending December 2025 included VANGUARD CAPITAL MANAGEMENT LLC (982.49K), ESSEX INVESTMENT MANAGEMENT CO LLC (821.6K), Evernest Financial Advisors, LLC (307.51K), Sei Investments Co (191.2K), MILLENNIUM MANAGEMENT LLC (166.78K).
• The biggest sellers of Rapid Micro Biosystems for the quarter ending December 2025 included MARSHALL WACE, LLP (47.69K), Goldman Sachs Group Inc (38.7K), ADVENT INTERNATIONAL, L.P. (25.4K), Qube Research & Technologies Ltd (17.69K), NANO CAP NEW MILLENNIUM GROWTH FUND L P (12.5K).
• Business Quant data shows the 10 biggest positions in Rapid Micro Biosystems as of December 2025 are held by Bain Capital Life Sciences Investors, LLC (8.43Mn), ABG-WTT Global Life Science Capital Partners GP Ltd (1.85Mn), VANGUARD CAPITAL MANAGEMENT LLC (982.49K), ESSEX INVESTMENT MANAGEMENT CO LLC (883.93K), ADVENT INTERNATIONAL, L.P. (552.38K), Evernest Financial Advisors, LLC (432.51K), Sei Investments Co (284.82K), MILLENNIUM MANAGEMENT LLC (283.28K), GEODE CAPITAL MANAGEMENT, LLC (247.18K), SUSQUEHANNA INTERNATIONAL GROUP, LLP (212.11K).