Merus
MRUS
MRUS was delisted on the 29th of December, 2025.
64 hedge funds and large institutions have $488M invested in Merus in 2021 Q3 according to their latest regulatory filings, with 10 funds opening new positions, 19 increasing their positions, 22 reducing their positions, and 14 closing their positions.
33% more funds holding in top 10
Funds holding in top 10: 3 → 4 (+1)
6% less funds holding
Funds holding: 68 → 64 (-4)
12.24% less ownership
Funds ownership: 69.84% → 57.6% (-12%)
13% less capital invested
Capital invested by funds: $558M → $488M (-$69.8M)
14% less repeat investments, than reductions
Existing positions increased: 19 | Existing positions reduced: 22
29% less first-time investments, than exits
New positions opened: 10 | Existing positions closed: 14
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Wellington Management Group
Boston,
Massachusetts
|
+$61.7M |
| 2 |
CC
Commodore Capital
New York
|
+$15.4M |
| 3 |
MB
MPM BioImpact
Boston,
Massachusetts
|
+$5.17M |
| 4 |
Millennium Management
New York
|
+$5.07M |
| 5 |
ACP
Acuta Capital Partners
Redwood City,
California
|
+$2.62M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BI
BVF Inc
San Francisco,
California
|
-$156M |
| 2 |
Deutsche Bank
Frankfurt Am Main Ge,
Germany
|
-$8.21M |
| 3 |
DCM
Driehaus Capital Management
Chicago,
Illinois
|
-$7.19M |
| 4 |
ACA
Avoro Capital Advisors
New York
|
-$4.5M |
| 5 |
OCA
Octagon Capital Advisors
New York
|
-$4.36M |
MRUS Hedge Fund Activity: Q3 2021 in Review
64 institutional investors reported a position in Merus (MRUS) for Q3 2021, worth a combined $488M — down 13% from $558M a quarter earlier.
Sellers outnumbered buyers: 14 funds closed out of MRUS and 10 opened new positions — a net loss of 4 holders — while 22 trimmed existing stakes and 19 added.
The largest buyer was Wellington Management Group, adding an estimated $61.7M. The largest seller was BVF Inc, exiting entirely with an estimated $156M sold.
- 64 institutional investors held Merus (MRUS) as of Q3 2021, down from 68 in Q2 2021.
- Funds reported $488M of Merus stock for Q3 2021, down 13% quarter-over-quarter.
- 10 funds opened new Merus positions in Q3 2021 and 14 closed out, a net change of -4 holders.
- The largest Merus buyer in Q3 2021 was Wellington Management Group, an estimated $61.7M added.
- The largest Merus seller in Q3 2021 was BVF Inc, an estimated $156M sold.
Based on aggregated 13F filings for Q3 2021.