RPID Rapid Micro Biosystems, Inc.
Rapid Micro Biosystems, Inc. (RPID) Institutional Ownership
What the institutions did with RPID last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| Bain Capital Life Sciences Investors, LLC | 8.4M | 48.1% |
| ARMISTICE CAPITAL, LLC | 3.3M | 19.0% |
| ABG-WTT Global Life Science Capital Partners GP Ltd | 1.8M | 10.5% |
| VANGUARD CAPITAL MANAGEMENT LLC | 982.0K | 5.6% |
| Evernest Financial Advisors, LLC | 506.0K | 2.9% |
| Advent International, L.P. | 379.8K | 2.2% |
| ESSEX INVESTMENT MANAGEMENT CO LLC | 362.7K | 2.1% |
| MILLENNIUM MANAGEMENT LLC | 236.6K | 1.4% |
| GEODE CAPITAL MANAGEMENT, LLC | 228.0K | 1.3% |
| RENAISSANCE TECHNOLOGIES LLC | 212.1K | 1.2% |
| BlackRock, Inc. | 189.8K | 1.1% |
| Legato Capital Management LLC | 119.5K | 0.7% |
| VANGUARD FIDUCIARY TRUST CO | 110.5K | 0.6% |
| DIMENSIONAL FUND ADVISORS LP | 104.2K | 0.6% |
| STATE STREET CORP | 93.9K | 0.5% |
| XTX Topco Ltd | 79.7K | 0.5% |
| SEI INVESTMENTS CO | 66.9K | 0.4% |
| NORTHERN TRUST CORP | 42.1K | 0.2% |
| ALGERT GLOBAL LLC | 38.3K | 0.2% |
| MORGAN STANLEY | 27.6K | 0.2% |
| JANE STREET GROUP, LLC | 25.9K | 0.1% |
| HRT FINANCIAL LP | 23.1K | 0.1% |
| CITADEL ADVISORS LLC | 16.1K | 0.1% |
| OSAIC HOLDINGS, INC. | 14.3K | 0.1% |
| NANO CAP NEW MILLENNIUM GROWTH FUND L P | 12.5K | 0.1% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| ARMISTICE CAPITAL, LLC | New | 0 | 3.3M | +3.3M |
| ESSEX INVESTMENT MANAGEMENT CO LLC | Reduced | 883.9K | 362.7K | -521.2K |
| SEI INVESTMENTS CO | Reduced | 284.8K | 66.9K | -217.9K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Sold Out | 212.1K | 0 | -212.1K |
| Advent International, L.P. | Reduced | 552.4K | 379.8K | -172.6K |
| Legato Capital Management LLC | Reduced | 274.9K | 119.5K | -155.4K |
| 683 Capital Management, LLC | Sold Out | 120.8K | 0 | -120.8K |
| JANE STREET GROUP, LLC | Reduced | 132.9K | 25.9K | -107.0K |
| RENAISSANCE TECHNOLOGIES LLC | Increased | 126.6K | 212.1K | +85.5K |
| Evernest Financial Advisors, LLC | Increased | 432.5K | 506.0K | +73.5K |
| GOLDMAN SACHS GROUP INC | Sold Out | 71.9K | 0 | -71.9K |
| FIFTH LANE CAPITAL, LP | Sold Out | 71.0K | 0 | -71.0K |
| MILLENNIUM MANAGEMENT LLC | Reduced | 283.3K | 236.6K | -46.7K |
| BlackRock, Inc. | Increased | 157.2K | 189.8K | +32.6K |
| BANK OF AMERICA CORP /DE/ | Sold Out | 31.0K | 0 | -31.0K |
| HRT FINANCIAL LP | New | 0 | 23.1K | +23.1K |
| Temasek Holdings (Private) Ltd | Sold Out | 21.8K | 0 | -21.8K |
| BARCLAYS PLC | Reduced | 21.6K | 337 | -21.3K |
| Catalyst Funds Management Pty Ltd | Sold Out | 21.2K | 0 | -21.2K |
| Graham Capital Management, L.P. | Sold Out | 20.0K | 0 | -20.0K |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 247.2K | 228.0K | -19.1K |
| XTX Topco Ltd | Increased | 61.1K | 79.7K | +18.7K |
| DIMENSIONAL FUND ADVISORS LP | Increased | 87.6K | 104.2K | +16.6K |
| CITADEL ADVISORS LLC | New | 0 | 16.1K | +16.1K |
| OMERS ADMINISTRATION Corp | Sold Out | 15.9K | 0 | -15.9K |
| Qube Research & Technologies Ltd | Sold Out | 15.4K | 0 | -15.4K |
| MARSHALL WACE, LLP | Sold Out | 15.2K | 0 | -15.2K |
| ALGERT GLOBAL LLC | Increased | 23.2K | 38.3K | +15.1K |
| BANCO BILBAO VIZCAYA ARGENTARIA, S.A. | Sold Out | 12.7K | 0 | -12.7K |
| Hudson Bay Capital Management LP | Sold Out | 12.5K | 0 | -12.5K |
| BNP PARIBAS FINANCIAL MARKETS | Sold Out | 9.3K | 0 | -9.3K |
| NORTHERN TRUST CORP | Reduced | 48.3K | 42.1K | -6.2K |
| AMERICAN CENTURY COMPANIES INC | Reduced | 16.9K | 11.6K | -5.3K |
| UBS Group AG | Reduced | 11.3K | 6.6K | -4.6K |
| Larson Financial Group LLC | Increased | 5.5K | 8.4K | +2.9K |
| Tower Research Capital LLC (TRC) | New | 0 | 1.9K | +1.9K |
| MORGAN STANLEY | Reduced | 29.2K | 27.6K | -1.6K |
| VANGUARD FIDUCIARY TRUST CO | Increased | 109.7K | 110.5K | +772 |
| ROYAL BANK OF CANADA | Sold Out | 719 | 0 | -719 |
| RESOURCES MANAGEMENT CORP /CT/ /ADV | Sold Out | 500 | 0 | -500 |
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | 982.5K | 982.0K | -460 |
| OSAIC HOLDINGS, INC. | Increased | 14.0K | 14.3K | +300 |
| Caitong International Asset Management Co., Ltd | New | 0 | 35 | +35 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.