13F

Stock

Rapid Micro Biosystems, Inc.

RPID · held by 46 managers

Reported value

$35.9M

Holders

46

+10 new · −8 exited

Holders’ est. mark

−$8.01M

Price effect on 33 books still in the name

Largest holder

$19.1M

Bain Capital Life Sciences Investors, LLC

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
Bain Capital Life Sciences Investors, LLC8.43M$19.1M−$5.31MCut−$5.31M
ABG-WTT Global Life Science Capital Partners GP Ltd1.85M$4.2M−$1.16MCut−$1.16M
VANGUARD CAPITAL MANAGEMENT LLC982.5K$2.23MHeld
ESSEX INVESTMENT MANAGEMENT CO LLC883.9K$2.01M−$39.3KAdded$1.83M
Advent International, L.P.552.4K$1.25M−$348KCut−$421.7K
Evernest Financial Advisors, LLC432.5K$1.02M−$173.7KAdded$552K
SEI INVESTMENTS CO284.8K$646.5K−$59KAdded$375K
MILLENNIUM MANAGEMENT LLC283.3K$643K−$73.4KAdded$305.2K
Legato Capital Management LLC274.9K$624.1K−$9.25KAdded$581.5K
GEODE CAPITAL MANAGEMENT, LLC247.2K$561.3K−$137KCut−$69.8K
SUSQUEHANNA INTERNATIONAL GROUP, LLP212.1K$481.5K−$108.5KCut−$18K
BlackRock, Inc.157.2K$356.9K−$98.7KCut−$97.4K
JANE STREET GROUP, LLC132.9K$301.7K−$66.3KCut−$3.63K
Renaissance Technologies126.6K$287.4K−$72.8KCut−$47.9K
683 Capital Management, LLC120.8K$274.2K−$76.1KCut−$76.1K
VANGUARD FIDUCIARY TRUST CO109.7K$249KHeld
State Street93.9K$213.1K−$57.6KCut−$52.2K
DIMENSIONAL FUND ADVISORS LP87.6K$198.7K−$35KAdded$36.2K
GOLDMAN SACHS GROUP INC71.9K$163.2K−$34.8KAdded$2.85K
FIFTH LANE CAPITAL, LP71K$161.2K−$11.2KAdded$109.8K
XTX Topco Ltd61.1K$138.6KNew
NORTHERN TRUST CORP48.3K$109.6K−$25.5KCut−$7.82K
BANK OF AMERICA CORP /DE/31K$70.4K−$8.15KAdded$32.9K
MORGAN STANLEY29.2K$66.3K−$18.4KCut−$24.7K
Temasek Holdings (Private) Ltd21.8K$49.5KNew
BARCLAYS PLC21.6K$49K−$13.6KCut−$23.1K
Catalyst Funds Management Pty Ltd21.2K$48.1KNew
Graham Capital Management, L.P.20K$45.4KNew
AMERICAN CENTURY COMPANIES INC16.9K$38.4K−$10.7KCut−$10.7K
OMERS ADMINISTRATION Corp15.9K$36.1K−$10KCut−$34.7K
Qube Research & Technologies Ltd15.4K$35K−$9.71KCut−$61K
MARSHALL WACE, LLP15.2K$34.6K−$9.59KCut−$147.9K
OSAIC HOLDINGS, INC.14K$31.8K−$8.82KCut−$9.69K
BANCO BILBAO VIZCAYA ARGENTARIA, S.A.12.7K$29KNew
Hudson Bay Capital Management LP12.5K$28.4KNew
NANO CAP NEW MILLENNIUM GROWTH FUND L P12.5K$28.4K−$7.87KCut−$44.1K
Vanguard Global Advisers, LLC11.6K$26.4KHeld
UBS Group AG11.3K$25.5K−$26Added$25.4K
BNP PARIBAS FINANCIAL MARKETS9.33K$21.2K−$5.88KCut−$11K
Larson Financial Group LLC5.49K$12.5KNew
ROYAL BANK OF CANADA719$2KNew
CWM, LLC188$427New
JPMORGAN CHASE & CO109$242−$74Cut−$74
ALGERT GLOBAL LLC23.2K$53New
SBI Securities Co., Ltd.15$34−$10Cut−$10
RESOURCES MANAGEMENT CORP /CT/ /ADV500$1$0Held

Who left

Positions as of Q1 2026. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.