Who owns RAPID MICRO BIOSYSTEMS, INC.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of RPID from SEC Form 13F filings across 34 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 34 institutions disclosed 17.5M shares of RAPID MICRO BIOSYSTEMS, INC. worth $30.3M — about 36.2% of shares outstanding; the largest disclosed holder is Bain Capital Life Sciences Investors, LLC. Source: SEC Form 13F filings, parsed by EvidInvest.
34
13F holders
$30.3M
value, 2026 filers
36.2%
of shares outstanding (17.5M sh)
6
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of RPID's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | Bain Capital Life Sciences Investors, LLC | 8.4M | $14.6M | 0.9% | 17.4% | 0.0% |
| 2 | ARMISTICE CAPITAL, LLCNEW | 3.3M | $5.8M | 0.1% | 6.9% | new |
| 3 | ABG-WTT Global Life Science Capital Partners GP Ltd | 1.8M | $3.2M | 37.4% | 3.8% | 0.0% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 982,034 | $1.7M | 0.0% | 2% | 0.0% |
| 5 | Evernest Financial Advisors, LLC | 506,000 | $875,380 | 0.2% | 1% | +17.0% |
| 6 | Advent International, L.P. | 379,794 | $657,044 | 0.0% | 0.8% | -31.2% |
| 7 | ESSEX INVESTMENT MANAGEMENT CO LLC | 362,696 | $627,464 | 0.1% | 0.8% | -59.0% |
| 8 | MILLENNIUM MANAGEMENT LLC | 236,599 | $409,316 | 0.0% | 0.5% | -16.5% |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | 228,041 | $394,706 | 0.0% | 0.5% | -7.7% |
| 10 | RENAISSANCE TECHNOLOGIES LLC | 212,101 | $366,935 | 0.0% | 0.4% | +67.5% |
| 11 | BlackRock, Inc. | 189,832 | $328,410 | 0.0% | 0.4% | +20.7% |
| 12 | Legato Capital Management LLCNEW | 119,534 | $206,794 | 0.0% | 0.2% | new |
| 13 | VANGUARD FIDUCIARY TRUST CO | 110,484 | $191,137 | 0.0% | 0.2% | +0.7% |
| 14 | DIMENSIONAL FUND ADVISORS LP | 104,192 | $180,253 | 0.0% | 0.2% | +19.0% |
| 15 | STATE STREET CORP | 93,874 | $162,402 | 0.0% | 0.2% | 0.0% |
| 16 | XTX Topco Ltd | 79,727 | $137,928 | 0.0% | 0.2% | +30.6% |
| 17 | SEI INVESTMENTS CO | 66,869 | $115,683 | 0.0% | 0.1% | -76.5% |
| 18 | NORTHERN TRUST CORP | 42,106 | $72,843 | 0.0% | 0.1% | -12.8% |
| 19 | ALGERT GLOBAL LLC | 38,307 | $66,271 | 0.0% | 0.1% | +65.3% |
| 20 | MORGAN STANLEY | 27,587 | $47,726 | 0.0% | 0.1% | -5.5% |
| 21 | JANE STREET GROUP, LLC | 25,931 | $44,861 | 0.0% | 0.1% | -80.5% |
| 22 | HRT FINANCIAL LPNEW | 23,093 | $39,000 | 0.0% | 0% | new |
| 23 | CITADEL ADVISORS LLCNEW | 16,142 | $27,926 | 0.0% | 0% | new |
| 24 | OSAIC HOLDINGS, INC. | 14,300 | $24,739 | 0.0% | 0% | +2.1% |
| 25 | NANO CAP NEW MILLENNIUM GROWTH FUND L P | 12,500 | $21,625 | 0.0% | 0% | 0.0% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.