RAPID MICRO BIOSYSTEMS, INC. (RPID) — Institutional Holders, Q2 2026
35 institutional investment managers reported a RPID position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $31.3M. Every filer is listed below, ranked by position value. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
RPID in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- ARMISTICE CAPITALNew · +3,328,000 sh+$5.8M
- RENAISSANCE TECHNOLOGIESAdded · +85,484 sh+$147.9K
- Evernest Financial AdvisorsAdded · +73,490 sh+$127.1K
- BlackRockAdded · +32,600 sh+$56.4K
- HRT FINANCIALNew · +23,093 sh+$40.0K
Biggest sellers
- ESSEX INVESTMENT MANAGEMENTTrimmed · -521,235 sh-$901.7K
- SEI INVESTMENTSTrimmed · -217,947 sh-$377.0K
- SUSQUEHANNA INTERNATIONAL GROUP, LLPSold out · -212,114 sh-$367.0K
- ADVENT INTERNATIONAL, L.P.Trimmed · -172,583 sh-$298.6K
- Legato Capital ManagementTrimmed · -155,390 sh-$268.8K
RPID 13F holders ranked 1–35 of 35
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | Bain Capital Life Sciences Investors#1 · 8,434,560 sh | 8,434,560 | $14.6M | 0.87% | 0.0% |
| 2 | ARMISTICE CAPITAL#2 · 3,328,000 sh | 3,328,000 | $5.8M | 0.07% | New |
| 3 | ABG-WTT Global Life Science Capital Partners GP Ltd#3 · 1,848,296 sh | 1,848,296 | $3.2M | 37.39% | 0.0% |
| 4 | VANGUARD CAPITAL MANAGEMENT#4 · 982,034 sh | 982,034 | $1.7M | 0.00% | 0.0% |
| 5 | KHAZANAH NASIONAL BERHAD#5 · 566,905 sh | 566,905 | $980.7K | 0.06% | 0.0% |
| 6 | Evernest Financial Advisors#6 · 506,000 sh | 506,000 | $875.4K | 0.18% | +17.0% |
| 7 | ADVENT INTERNATIONAL, L.P.#7 · 379,794 sh | 379,794 | $657.0K | <0.01% | -31.2% |
| 8 | ESSEX INVESTMENT MANAGEMENT#8 · 362,696 sh | 362,696 | $627.5K | — | -59.0% |
| 9 | MILLENNIUM MANAGEMENT#9 · 236,599 sh | 236,599 | $409.3K | <0.01% | -16.5% |
| 10 | GEODE CAPITAL MANAGEMENT#10 · 228,041 sh | 228,041 | $394.7K | 0.00% | -7.7% |
| 11 | RENAISSANCE TECHNOLOGIES#11 · 212,101 sh | 212,101 | $366.9K | <0.01% | +67.5% |
| 12 | BlackRock#12 · 189,832 sh | 189,832 | $328.4K | 0.00% | +20.7% |
| 13 | Legato Capital Management#13 · 119,534 sh | 119,534 | $206.8K | 0.02% | -56.5% |
| 14 | VANGUARD FIDUCIARY#14 · 110,484 sh | 110,484 | $191.1K | 0.00% | +0.7% |
| 15 | DIMENSIONAL FUND ADVISORS#15 · 104,192 sh | 104,192 | $180.3K | 0.00% | +19.0% |
| 16 | STATE STREET#16 · 93,874 sh | 93,874 | $162.4K | 0.00% | 0.0% |
| 17 | XTX Topco Ltd#17 · 79,727 sh | 79,727 | $137.9K | <0.01% | +30.6% |
| 18 | SEI INVESTMENTS#18 · 66,869 sh | 66,869 | $115.7K | <0.01% | -76.5% |
| 19 | NORTHERN#19 · 42,106 sh | 42,106 | $72.8K | 0.00% | -12.8% |
| 20 | ALGERT GLOBAL#20 · 38,307 sh | 38,307 | $66.3K | <0.01% | +65.3% |
| 21 | MORGAN STANLEY#21 · 27,587 sh | 27,587 | $47.7K | 0.00% | -5.5% |
| 22 | JANE STREET GROUP#22 · 25,931 sh | 25,931 | $44.9K | 0.00% | -80.5% |
| 23 | HRT FINANCIAL#23 · 23,093 sh | 23,093 | $39.0K | <0.01% | New |
| 24 | CITADEL ADVISORS#24 · 16,142 sh | 16,142 | $27.9K | 0.00% | New |
| 25 | OSAIC#25 · 14,300 sh | 14,300 | $24.7K | 0.00% | +2.1% |
| 26 | NANO CAP NEW MILLENNIUM GROWTH FUND L P#26 · 12,500 sh | 12,500 | $21.6K | 0.02% | 0.0% |
| 27 | AMERICAN CENTURY COMPANIES#27 · 11,638 sh | 11,638 | $20.1K | 0.00% | -31.2% |
| 28 | Vanguard Global Advisers#28 · 11,630 sh | 11,630 | $20.1K | 0.00% | 0.0% |
| 29 | Larson Financial Group#29 · 8,395 sh | 8,395 | $14.5K | <0.01% | +52.9% |
| 30 | UBS Group AG#30 · 6,607 sh | 6,607 | $11.4K | 0.00% | -41.3% |
| 31 | Tower Research Capital (TRC)#31 · 1,900 sh | 1,900 | $3.3K | <0.01% | New |
| 32 | BARCLAYS PLC#32 · 337 sh | 337 | $583.00 | 0.00% | -98.4% |
| 33 | JPMORGAN CHASE#33 · 109 sh | 109 | $189.00 | 0.00% | 0.0% |
| 34 | Caitong International Asset Management , Ltd#34 · 35 sh | 35 | $61.00 | 0.00% | New |
| 35 | SBI Securities , Ltd.#35 · 15 sh | 15 | $26.00 | — | 0.0% |
Funds that sold out of RPID in Q2 2026 (16)
Held RPID at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| SUSQUEHANNA INTERNATIONAL GROUP, LLP212,114 sh | 212,114 | $481.5K |
| 683 Capital Management120,773 sh | 120,773 | $274.2K |
| GOLDMAN SACHS GROUP71,912 sh | 71,912 | $163.2K |
| FIFTH LANE CAPITAL71,000 sh | 71,000 | $161.2K |
| BANK OF AMERICA31,014 sh | 31,014 | $70.4K |
| Temasek (Private) Ltd21,818 sh | 21,818 | $49.5K |
| Catalyst Funds Management Pty Ltd21,200 sh | 21,200 | $48.1K |
| Graham Capital Management, L.P.20,000 sh | 20,000 | $45.4K |
| OMERS ADMINISTRATION15,900 sh | 15,900 | $36.1K |
| Qube Research & Technologies Ltd15,410 sh | 15,410 | $35.0K |
| MARSHALL WACE, LLP15,224 sh | 15,224 | $34.6K |
| BANCO BILBAO VIZCAYA ARGENTARIA, S.A.12,691 sh | 12,691 | $29.0K |
| Hudson Bay Capital Management12,524 sh | 12,524 | $28.4K |
| BNP PARIBAS FINANCIAL MARKETS9,327 sh | 9,327 | $21.2K |
| ROYAL BANK OF CANADA719 sh | 719 | $2.0K |
| RESOURCES MANAGEMENT /CT500 sh | 500 | $1.0K |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.