Rapid Micro Biosystems
RPID
46 hedge funds and large institutions have $36M invested in Rapid Micro Biosystems in 2026 Q1 according to their latest regulatory filings, with 13 funds opening new positions, 17 increasing their positions, 9 reducing their positions, and 8 closing their positions.
89% more repeat investments, than reductions
Existing positions increased: 17 | Existing positions reduced: 9
63% more first-time investments, than exits
New positions opened: 13 | Existing positions closed: 8
10% more funds holding
Funds holding: 42 → 46 (+4)
1.96% more ownership
Funds ownership: 36.71% → 38.67% (+2%)
0% more funds holding in top 10
Funds holding in top 10: 1 → 1 (0)
15% less capital invested
Capital invested by funds: $42.5M → $36M (-$6.51M)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
EIM
Essex Investment Management
Boston,
Massachusetts
|
+$3.01M |
| 2 |
EFA
Evernest Financial Advisors
Carmel,
Indiana
|
+$1.13M |
| 3 |
LCM
Legato Capital Management
San Francisco,
California
|
+$953K |
| 4 |
SEI Investments
Oaks,
Pennsylvania
|
+$700K |
| 5 |
Millennium Management
New York
|
+$610K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
PHP
Parkman Healthcare Partners
Stamford,
Connecticut
|
-$1.03M |
| 2 |
SSA
Schonfeld Strategic Advisors
New York
|
-$1.02M |
| 3 |
Citadel Advisors
Miami,
Florida
|
-$367K |
| 4 |
EI
EAM Investors
Solana Beach,
California
|
-$224K |
| 5 |
Marshall Wace
London,
United Kingdom
|
-$175K |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
51
Point72 Asset Management
Stamford,
Connecticut
| – | -$88.1K | -30,367 | Closed |
|
|
LIP
52
Lighthouse Investment Partners
Palm Beach Gardens,
Florida
| – | -$45.6K | -15,720 | Closed |
|
53
Citigroup
New York
| – | -$14K | -4,832 | Closed |
|
|
TRCT
54
Tower Research Capital (TRC)
New York
| – | -$919 | -317 | Closed |
|
RPID Hedge Fund Activity: Q1 2026 in Review
46 of the 8,134 institutional investors tracked by Wall St. Rank reported a position in Rapid Micro Biosystems (RPID) for Q1 2026, worth a combined $36M — down 15% from $42.5M a quarter earlier.
Buyers outnumbered sellers: 13 funds opened new RPID positions and 8 closed out — a net gain of 5 holders — while 17 added to existing stakes and 9 trimmed.
The largest buyer was Essex Investment Management, adding an estimated $3.01M. The largest seller was Parkman Healthcare Partners, exiting entirely with an estimated $1.03M sold.
- 46 institutional investors held Rapid Micro Biosystems (RPID) as of Q1 2026, up from 42 in Q4 2025.
- Funds reported $36M of Rapid Micro Biosystems stock for Q1 2026, down 15% quarter-over-quarter.
- 13 funds opened new Rapid Micro Biosystems positions in Q1 2026 and 8 closed out, a net change of +5 holders.
- The largest Rapid Micro Biosystems buyer in Q1 2026 was Essex Investment Management, an estimated $3.01M added.
- The largest Rapid Micro Biosystems seller in Q1 2026 was Parkman Healthcare Partners, an estimated $1.03M sold.
Based on aggregated 13F filings for Q1 2026.