Rapid Micro Biosystems Inc. Class ARPID
13F holders, Q3 2025 (September 30)At the end of Q3 2025, 29 institutions reported holding Rapid Micro Biosystems Inc. Class A (RPID) in their 13F filings, unchanged from Q2 2025. 4 opened new positions and 4 sold out. The largest holders were Bain Capital Life Sciences Investors, LLC ($28.2M), ABG-WTT Global Life Science Capital Partners GP Ltd ($6.2M) and Vanguard Group Inc. ($3.2M). One famous investor held it Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Rapid Micro Biosystems Inc. Class A
- CUSIP
- 75340L104
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 4 | $178K |
| Exits | 4 | $729K |
All 13F filers, Q2 2025 → Q3 2025: 331,164 shares bought and 647,787 shares sold, net −316,623 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 29 holders
| Bain Capital Life Sciences Investors, LLC | 1.87% | No change | 8,434,560 | $28.2M |
| ABG-WTT Global Life Science Capital Partners GP Ltd | 33.06% | No change | 1,848,296 | $6.2M |
| Vanguard Group Inc. | 0.00% | Add +6.7% | 965,018 | $3.2M |
| Parkman Healthcare Partners LLC | 0.34% | No change | 913,443 | $3.1M |
| Schonfeld Strategic Advisors LLC | 0.02% | Reduce -37.7% | 646,579 | $2.2M |
| Advent International, L.P. | 0.04% | No change | 577,777 | $1.9M |
| BlackRock, Inc. | 0.00% | Add +1.5% | 483,871 | $1.6M |
| Geode Capital Management, LLC | 0.00% | Add +0.3% | 204,687 | $684K |
| Evernest Financial Advisors, LLC | 0.19% | Add +355.1% | 200,234 | $669K |
| Renaissance Technologies | 0.00% | Reduce -0.7% | 110,187 | $368K |
| State Street Corp. | 0.00% | Add +52.8% | 91,474 | $306K |
| Essex Investment Management Co. LLC | 0.03% | No change | 62,326 | $208K |
| Susquehanna International Group, LLP | 0.00% | Add +12.6% | 58,387 | $195K |
| Dimensional Fund Advisors LP | 0.00% | Add +37.8% | 55,642 | $186K |
| Northern Trust Corp. | 0.00% | Reduce -1.7% | 47,726 | $159K |
| Jane Street Group, LLC | 0.00% | New | 38,140 | $127K |
| XTX Topco Ltd | 0.00% | Reduce -47.0% | 22,165 | $74K |
| Morgan Stanley | 0.00% | Reduce -43.3% | 20,550 | $69K |
| American Century Companies Inc. | 0.00% | No change | 16,922 | $57K |
| Legato Capital Management LLC | 0.01% | No change | 14,684 | $49K |
| Hudson Bay Capital Management LP | 0.00% | New | 11,461 | $38K |
| BNP Paribas Financial Markets | 0.00% | New | 3,626 | $12K |
| Resources Management Corp. /CT/ | 0.00% | No change | 500 | $2K |
| Osaic Holdings, Inc. | 0.00% | No change | 300 | $990 |
| UBS Group AG | 0.00% | Reduce -96.7% | 290 | $969 |
| JPMorgan Chase & Co. | 0.00% | No change | 109 | $364 |
| SBI Securities Co., Ltd. | 0.00% | Add +13.3% | 17 | $57 |
| Bank of America Corp. | 0.00% | Reduce -91.5% | 15 | $50 |
| Citigroup Inc. | 0.00% | New | 1 | $3 |
"% of holder's portfolio" is RPID's weight in each manager's 13F, not the share of Rapid Micro Biosystems Inc. Class A the manager owns.