Rapid Micro Biosystems Ownership | Who Owns Rapid Micro Biosystems?
Rapid Micro Biosystems Ownership Summary
Rapid Micro Biosystems is owned by 33.21% institutional investors, 9.59% insiders, and 57.20% retail investors. Bain capital life sciences investors is the largest institutional shareholder, holding 18.89% of RPID shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 1.45% of its assets in Rapid Micro Biosystems shares.
RPID Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Rapid Micro Biosystems | 33.21% | 9.59% | 57.20% |
| Sector | Healthcare Stocks | 42.54% | 10.83% | 46.63% |
| Industry | Medical Device Stocks | 37.80% | 10.13% | 52.07% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Bain capital life sciences investors | 8.43M | 18.89% | $28.17M |
| Kennedy lewis management lp | 4.94M | 11.42% | $3.26M |
| Abg-wtt global life science capital partners gp | 1.85M | 4.14% | $6.17M |
| Vanguard group | 965.02K | 2.16% | $3.22M |
| Parkman healthcare partners | 913.44K | 2.05% | $3.05M |
| Blackrock | 648.52K | 1.50% | $428.02K |
| Schonfeld strategic advisors | 646.58K | 1.45% | $2.16M |
| Advent corp/ma | 577.78K | 1.29% | $1.93M |
| Blackrock funding, inc. /de | 483.87K | 1.08% | $1.62M |
| Geode capital management | 204.69K | 0.46% | $683.86K |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Abg-wtt global life science capital partners gp | 1.85M | 33.06% | $6.17M |
| Kennedy lewis management lp | 4.94M | 14.06% | $3.26M |
| Bain capital life sciences investors | 8.43M | 1.87% | $28.17M |
| Parkman healthcare partners | 913.44K | 0.32% | $3.05M |
| Evernest financial advisors | 200.23K | 0.19% | $668.78K |
| Advent corp/ma | 577.78K | 0.04% | $1.93M |
| Essex investment management | 62.33K | 0.03% | $208.17K |
| Schonfeld strategic advisors | 646.58K | 0.01% | $2.16M |
| Legato capital management | 14.68K | 0.01% | $49.05K |
| Xtx topco | 22.16K | 0.00% | $74.03K |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Evernest financial advisors | 200.23K | 0.19% | 156.23K |
| Vanguard group | 965.02K | - | 60.66K |
| Jane street group | 38.14K | - | 38.14K |
| State street | 91.47K | - | 31.60K |
| Dimensional fund advisors lp | 55.64K | - | 15.26K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Glenview capital management | - | - | -547.99K |
| Schonfeld strategic advisors | 646.58K | 0.01% | -391.09K |
| Blackrock | 648.52K | - | -371.21K |
| Eam investors | - | - | -170.10K |
| Omers administration | - | - | -109.40K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Jane street group | 38.14K | - | 38.14K | $127.39M |
| Hudson bay capital management lp | 11.46K | 0.00% | 11.46K | $38.28K |
| Bnp paribas arbitrage, snc | 3.63K | - | 3.63K | $12.11K |
| Citigroup | 1.00 | - | 1.00 | $3.00 |
Sold Out
| Holder | Change |
|---|---|
| Qube research | -4.00 |
| Steward partners investment advisory | -100.00 |
| Wells fargo & company/mn | -157.00 |
| Tower research capital llc (trc) | -350.00 |
| Two sigma securities | -10.97K |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Sep 30, 2025 | 29 | 7.41% | 14,828,837 | -1.72% | 33 | 2.91% | 13 | 8.33% | 7 | -12.50% |
| Jun 30, 2025 | 28 | - | 15,145,310 | -1.11% | 33 | 2.80% | 14 | -36.36% | 7 | 75.00% |
| Mar 31, 2025 | 1 | -94.44% | 577,777 | -95.16% | 1 | 0.18% | - | -100.00% | - | -100.00% |
| Dec 31, 2024 | 18 | - | 11,949,084 | -31.95% | 27 | 1.69% | 8 | 60.00% | 3 | -50.00% |
| Sep 30, 2024 | 18 | -5.26% | 17,558,874 | -5.13% | 40 | 2.20% | 5 | - | 6 | - |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard Total Stock Mkt Idx Inv | 640.27K | 1.45% | -14.13K |
| BlackRock Health Sciences Term Trust | 333.06K | 0.75% | -238.12K |
| IMC US Ultra Micro Cap | 181.64K | 0.41% | - |
| Vanguard Institutional Extnd Mkt Idx Tr | 170.18K | 0.39% | -52.90K |
| Fidelity Extended Market Index | 94.51K | 0.21% | -169.00 |
| Pleiades Small Cap Equity A | 90.82K | 0.21% | -6.84K |
| iShares Micro-Cap ETF | 66.61K | 0.15% | - |
| Extended Equity Market Fund K | 58.52K | 0.13% | -1.17K |
| Northern Trust Extended Eq Market Idx | 28.99K | 0.07% | - |
| NT Ext Equity Mkt Idx Fd - L | 28.99K | 0.07% | - |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Jul 14, 2025 | Spignesi Robert G. Jr. | PRESIDENT AND CEO | Sell | $39.48K |
| Jul 11, 2025 | Spignesi Robert G. Jr. | PRESIDENT AND CEO | Sell | $39.50K |
| Jul 10, 2025 | Spignesi Robert G. Jr. | PRESIDENT AND CEO | Sell | $39.47K |
| Jul 09, 2025 | Spignesi Robert G. Jr. | PRESIDENT AND CEO | Sell | $39.48K |
| Jul 08, 2025 | Spignesi Robert G. Jr. | PRESIDENT AND CEO | Sell | $38.02K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2025 Q3 | - | 5 |
| 2025 Q2 | - | - |
| 2025 Q1 | - | - |
| 2024 Q4 | 4 | - |
| 2024 Q3 | 4 | - |
RPID Ownership FAQ
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