Rapid Micro Biosystems Inc (RPID)
Healthcare
Medical Devices
2.10 $
+0.9%
vs. previous close
Closing price · As of: 31. Jul 2026
Who owns Rapid Micro Biosystems Inc (RPID)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 66.4% of the shares are freely tradable; institutional investors hold 54.1%.
Ownership Structure
Institutional ownership
Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings.
54.1%
Insiders
Share of the stock held by the executives, founders and major shareholders of the company itself.
10.3%
Float
Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders.
66.4%
Short % of float
Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
2.0%
Shares Outstanding
Total number of shares issued. Price times share count gives market cap.
45Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Bain Capital Life Sciences Investors, LLC | 16.93 | 8,434,560 | +0.0 | 03/31/2026 |
| ABG-WTT Global Life Science Capital Partners GP Ltd | 3.71 | 1,848,296 | +0.0 | 03/31/2026 |
| Vanguard Capital Management, LLC | 1.97 | 982,494 | +0.0 | 03/31/2026 |
| Vanguard Group Inc | 1.96 | 978,781 | +1.4 | 12/31/2025 |
| Essex Investment Management Company, LLC | 1.77 | 883,931 | +1,318.2 | 03/31/2026 |
| Advent International LP | 1.11 | 552,377 | -4.4 | 03/31/2026 |
| Evernest Financial Advisors LLC | 0.87 | 432,510 | +246.0 | 03/31/2026 |
| SEI Investments Co | 0.57 | 284,816 | +204.2 | 03/31/2026 |
| Millennium Management LLC | 0.57 | 283,280 | +143.2 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard Total Stock Mkt Idx Inv | 1.51 | 750,984 | +0.0 | 04/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.