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Who owns Rapid Micro Biosystems (RPID) stock

36 funds reported Rapid Micro Biosystems (RPID) shares in their latest 13F filings, worth $36.2M in all. The largest holder is Bain Capital Life Sciences Investors, LLC ($14.6M). Last quarter 12 funds added to their stakes and 27 cut them.

Largest holders of RPID (13F)Largest holders of RPID (13F)Bain Capital Life Sciences Invest…$14.6MArmistice Capital, LLC$5.8MDuPont Capital Management$3.5MAbg-Wtt Global Life Science Capit…$3.2MVanguard Group$2.8MVanguard Capital Management LLC$1.7MKhazanah Nasional Berhad$981KAdvent International, L.P.$657KMillennium Management LLC$409KGeode Capital Management, LLC$395K

Largest holders (13F)

FundSharesValueChangeQuarter
Bain Capital Life Sciences Investors, LLC8,434,560$14.6Munchanged2026-06-30
Armistice Capital, LLC3,328,000$5.8Mnew2026-06-30
DuPont Capital Management3,370$3.5Mnew2026-09-30
Abg-Wtt Global Life Science Capital Partners GP1,848,296$3.2Munchanged2026-06-30
Vanguard Group978,781$2.8Mincrease2025-12-31
Vanguard Capital Management LLC982,034$1.7Mdecrease2026-06-30
Khazanah Nasional Berhad566,905$981Kunchanged2026-06-30
Advent International, L.P.379,794$657Kdecrease2026-06-30
Millennium Management LLC236,599$409Knew2026-06-30
Geode Capital Management, LLC228,041$395Kdecrease2026-06-30
Renaissance Technologies LLC212,101$367Kincrease2026-06-30
BlackRock189,832$328Kincrease2026-06-30
Legato Capital Management LLC119,534$207Kdecrease2026-06-30
Vanguard Fiduciary Trust110,484$191Kincrease2026-06-30
Dimensional Fund Advisors LP104,192$180Kincrease2026-06-30

Rapid Micro Biosystems' latest quarter

Rapid Micro Biosystems, Q2 2026: revenue $8.1M (+11% year over year), operating margin -153.0%, net loss $12.9M, operating cash flow −$12.7M. The chart follows the revenue to costs, profit and cash.

Questions

Who owns the most RPID stock?

By the latest 13F filings: Bain Capital Life Sciences Investors, LLC ($14.6M); Armistice Capital, LLC ($5.8M); DuPont Capital Management ($3.5M); Abg-Wtt Global Life Science Capital Partners GP ($3.2M); Vanguard Group ($2.8M).

What is the short interest in RPID?

888,578 shares were sold short at the 2026-10-15 settlement, 4.05% of the float.

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Updated Nov 8, 2026. Read automatically from SEC filings and public data; errors are possible. Not investment advice.