Rapid Micro Biosystems Ownership | Who Owns Rapid Micro Biosystems?
Rapid Micro Biosystems Ownership Summary
Rapid Micro Biosystems is owned by 37.28% institutional investors, 10.11% insiders, and 52.62% retail investors. Bain capital life sciences investors is the largest institutional shareholder, holding 18.88% of RPID shares. Vanguard Morn Total Stk Mkt Idx Investor is the top mutual fund, with 1.51% of its assets in Rapid Micro Biosystems shares.
RPID Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Rapid Micro Biosystems | 37.28% | 10.11% | 52.62% |
| Sector | Healthcare Stocks | 246.48% | 12.12% | -158.60% |
| Industry | Medical Device Stocks | 52.58% | 12.61% | 34.81% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Bain capital life sciences investors | 8.43M | 18.88% | $19.15M |
| 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 | 978.78K | 2.20% | $2.84M |
| Blackrock | 648.52K | 1.50% | $428.02K |
| Advent corp/ma | 552.38K | 1.24% | $1.25M |
| Evernest financial advisors | 432.51K | 0.97% | $1.02M |
| Sei investments | 284.82K | 0.64% | $646.53K |
| Millennium management | 283.28K | 0.63% | $643.05K |
| Legato capital management | 274.92K | 0.62% | $624.08K |
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 | 1.73% | $19.15M |
| Evernest financial advisors | 432.51K | 0.21% | $1.02M |
| Legato capital management | 274.92K | 0.06% | $624.08K |
| Advent corp/ma | 552.38K | 0.03% | $1.25M |
| Nano cap new millennium growth fund l p | 12.50K | 0.03% | $28.38K |
| Xtx topco | 61.07K | 0.00% | $138.63K |
| Algert global | 23.18K | 0.00% | $53.00K |
| Sei investments | 284.82K | 0.00% | $646.53K |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Evernest financial advisors | 432.51K | 0.21% | 307.51K |
| Legato capital management | 274.92K | 0.06% | 260.24K |
| Sei investments | 284.82K | 0.00% | 191.20K |
| Millennium management | 283.28K | 0.00% | 166.78K |
| Vanguard fiduciary trust | 109.71K | 0.00% | 109.71K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Glenview capital management | - | - | -547.99K |
| Blackrock | 648.52K | - | -371.21K |
| Essex investment management | - | - | -362.70K |
| Parkman healthcare partners | - | - | -354.46K |
| Schonfeld strategic advisors | - | - | -352.43K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Vanguard fiduciary trust | 109.71K | 0.00% | 109.71K | $249.05K |
| Algert global | 23.18K | 0.00% | 23.18K | $53.00K |
| Vanguard global advisers | 11.63K | - | 11.63K | $26.40K |
| Larson financial group | 5.49K | 0.00% | 5.49K | $12.46K |
| Cwm | 188.00 | - | 188.00 | $427.00 |
Sold Out
| Holder | Change |
|---|---|
| Steward partners investment advisory | -100.00 |
| Wells fargo & company/mn | -157.00 |
| Tower research capital llc (trc) | -317.00 |
| Resources management corp /ct/ /adv | -500.00 |
| Royal bank of canada | -719.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Jun 30, 2026 | 34 | -26.09% | 17,523,265 | 10.63% | 37 | 3.07% | 14 | -53.33% | 13 | 44.44% |
| Mar 31, 2026 | 22 | -47.62% | 3,644,964 | -75.07% | 8 | 0.76% | 19 | -29.63% | 1 | -85.71% |
| Dec 31, 2025 | 26 | -10.34% | 2,369,491 | -84.02% | 5 | 0.48% | 17 | 30.77% | 4 | -42.86% |
| 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% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard Morn Total Stk Mkt Idx Investor | 750.98K | 1.51% | - |
| Vanguard Total Stock Mkt Idx Inv | 750.98K | 1.51% | - |
| Vanguard MStar Total Stk Mkt Idx Invest | 750.98K | 1.50% | - |
| BlackRock Health Sciences Term Trust | 333.06K | 0.75% | - |
| IMC US Ultra Micro Cap | 261.91K | 0.58% | - |
| Vanguard Institutional Extnd Mkt Idx Tr | 202.76K | 0.40% | - |
| iShares Micro-Cap ETF | 119.19K | 0.24% | -822.00 |
| Fidelity Extended Market Index | 111.84K | 0.22% | 8.45K |
| 1290 Essex Small Cap Growth I | 96.30K | 0.19% | -108.78K |
| Extended Equity Market Fund B | 69.22K | 0.15% | - |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| May 20, 2026 | Bain Capital Life Sciences Investors, LLC | - | Buy | $14.63K |
| May 20, 2026 | Bain Capital Life Sciences Investors, LLC | - | Buy | $3.42M |
| May 20, 2026 | Bain Capital Life Sciences Investors, LLC | - | Buy | $2.86M |
| Mar 11, 2026 | Wilson John J. Addington | CHIEF OPERATING OFFICER | Sell | $41.47K |
| Mar 11, 2026 | WIRTJES SEAN M | CHIEF FINANCIAL OFFICER | Sell | $32.30K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q3 | - | - |
| 2026 Q2 | 3 | - |
| 2026 Q1 | - | 14 |
| 2025 Q4 | - | - |
| 2025 Q3 | - | 5 |
RPID Ownership FAQ
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