Rapid Micro Biosystems
RPID • NASDAQ
Rapid Micro Biosystems is a medical - devices company in the healthcare sector on NASDAQ, led by Kirk D. Malloy, Ph.D., with a market cap of $161.3M. As of Q3 2025, 34% of shares are held by 29 institutional investors, with Bain Capital Life Sciences Investors, LLC as the largest holder at 19.08%.
Chief Executive OfficerKirk D. Malloy, Ph.D.
Market Cap$161.3M
Medical - Devices
Healthcare
Employees193.0
Websiterapidmicrobio.com
Country
United States of America
Overview
Overview of institutional ownership in RPID as of Q3 2025 with a market cap of $147.7M
All Institutions
- Institutions
- 29
- Value Held
- $49.5M
- Shares Held
- 14.8M
- Avg Position
- $1.7M
- Median Position
- $159.4K
Hedge Funds
- Hedge Funds
- 4
- Value Held
- $5.6M
- Shares Held
- 1.7M
- Avg Position
- $1.4M
- Median Position
- $1.3M
Ownership Breakdown
Based on market cap of $147.7M as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.
Biggest Investors
Institutions with the largest positions in RPID as of Q3 2025
| Institution | Position Value |
|---|---|
B Bain Capital Life Sciences Investors, LLC Institution | $28.2M 1.87% of portfolio |
$6.2M 33.06% of portfolio | |
 VANGUARD GROUP INC Institution | $3.2M 0.00% of portfolio |
 Parkman Healthcare Partners LLC Hedge Fund•Long/Short | $3.1M 0.34% of portfolio |
 Schonfeld Strategic Advisors LLC Hedge Fund•Multi-Strategy | $2.2M 0.02% of portfolio |
 ADVENT INTERNATIONAL CORP/MA Private Equity | $1.9M 0.04% of portfolio |
B BlackRock, Inc. Institution | $1.6M 0.00% of portfolio |
 GEODE CAPITAL MANAGEMENT LLC ETF Provider | $683.9K 0.00% of portfolio |
 Evernest Financial Advisors, LLC RIA/Wealth | $668.8K 0.19% of portfolio |
 RENAISSANCE TECHNOLOGIES LLC Hedge Fund•Quant | $368.0K 0.00% of portfolio |
Net Capital Flow
Institutional buying and selling activity for RPID in Q3 2025
- Traded
- −$1.1M
- Buyers
- 14
- Sellers
- 9
- Total Bought
- +$1.1M
- Total Sold
- −$2.2M
- Avg Position
- $1.5M
Biggest Buyers
| Institution | Net Bought |
|---|---|
Evernest Financial Advisors, LLC RIA/Wealth | +$521.8K +156.2K shares |
VANGUARD GROUP INC Institution | +$202.6K +60.7K shares |
J JANE STREET GROUP, LLC Institution | +$127.4K +38.1K shares |
 STATE STREET CORP Institution | +$105.5K +31.6K shares |
 DIMENSIONAL FUND ADVISORS LP Long Only Manager | +$50.9K +15.3K shares |
 Hudson Bay Capital Management LP Hedge Fund•Multi-Strategy | +$38.3K +11.5K shares |
B BlackRock, Inc. Institution | +$23.6K +7.1K shares |
 SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity | +$21.8K +6.5K shares |
B BNP PARIBAS ARBITRAGE, SA Institution | +$12.1K +3.6K shares |
GEODE CAPITAL MANAGEMENT LLC ETF Provider | +$2.0K +608.0 shares |
Biggest Sellers
| Institution | Net Sold |
|---|---|
Schonfeld Strategic Advisors LLC Hedge Fund•Multi-Strategy | −$1.3M −391.1K shares |
 EAM Investors, LLC Long Only Manager | −$586.9K −170.1K shares |
 CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy | −$71.6K −20.8K shares |
 Mariner Wealth Advisors, LLC RIA/Wealth | −$69.8K −20.2K shares |
X XTX Topco Ltd Institution | −$65.6K −19.6K shares |
 MORGAN STANLEY RIA/Wealth | −$52.3K −15.7K shares |
 NORTHERN TRUST CORP Institution | −$2.8K −833.0 shares |
RENAISSANCE TECHNOLOGIES LLC Hedge Fund•Quant | −$2.7K −800.0 shares |
−$345.0 −100.0 shares |
Entry and Exit Activity
Institutions that initiated new positions or completely exited RPID in Q3 2025
- New Positions
- 3
- New Value
- $177.8K
- Exited Positions
- 4
- Exited Value
- $728.6K
New Positions
| Institution | Position Value |
|---|---|
J JANE STREET GROUP, LLC Institution | $127.4K 38.1K shares |
Hudson Bay Capital Management LP Hedge Fund•Multi-Strategy | $38.3K 11.5K shares |
B BNP PARIBAS ARBITRAGE, SA Institution | $12.1K 3.6K shares |
Exited Positions
| Institution | Previous Position |
|---|---|
EAM Investors, LLC Long Only Manager | $586.9K 170.1K shares |
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy | $71.6K 20.8K shares |
Mariner Wealth Advisors, LLC RIA/Wealth | $69.8K 20.2K shares |
$345.0 100.0 shares |
Options Activity
Institutions with the largest Call and Put options positions in RPID as of Q3 2025
- Call Positions
- 0
- Call Value
- -
- Put Positions
- 0
- Put Value
- -
Call Positions
| Institution | Position Value |
|---|---|
| No call positions found | |
Put Positions
| Institution | Position Value |
|---|---|
| No put positions found | |
Most Committed Institutions
Institutions with RPID as the highest % of their portfolio as of Q3 2025
| Institution | Portfolio Weight |
|---|---|
33.06% $6.2M | |
B Bain Capital Life Sciences Investors, LLC Institution | 1.87% $28.2M |
Parkman Healthcare Partners LLC Hedge Fund•Long/Short | 0.34% $3.1M |
Evernest Financial Advisors, LLC RIA/Wealth | 0.19% $668.8K |
ADVENT INTERNATIONAL CORP/MA Private Equity | 0.04% $1.9M |
 ESSEX INVESTMENT MANAGEMENT CO LLC Long Only Manager | 0.03% $208.2K |
Schonfeld Strategic Advisors LLC Hedge Fund•Multi-Strategy | 0.02% $2.2M |
 Legato Capital Management LLC Fund of Funds | 0.01% $49.0K |
X XTX Topco Ltd Institution | 0.00% $74.0K |
RENAISSANCE TECHNOLOGIES LLC Hedge Fund•Quant | 0.00% $368.0K |
Hedge Fund Spotlight
Discover hedge funds investing in RPID
RENAISSANCE TECHNOLOGIES LLC
Hedge Fund • Quant
Portfolio ManagerPeter Fitzhugh Brown
- Portfolio Value
- $75.8B
- Positions
- 3,419
- Last Reported
- Q3 2025
Sector Allocation
Position in Rapid Micro Biosystems
- Market Value
- $368.0K
- Shares Held
- 110.2K
- Portfolio Weight
- 0.00%
- Owned Since
- 2023-Q1
| Top Holding | Sector | Market Value | Weight |
|---|---|---|---|
Software - Infrastructure Technology | $1.6B | 2.06% | |
Semiconductors Technology | $1.1B | 1.39% | |
Electronic Gaming & Multimedia Technology | $953.5M | 1.26% |
