Merus
MRUS
MRUS was delisted on the 29th of December, 2025.
103 hedge funds and large institutions have $1.05B invested in Merus in 2021 Q4 according to their latest regulatory filings, with 43 funds opening new positions, 25 increasing their positions, 25 reducing their positions, and 3 closing their positions.
1,333% more first-time investments, than exits
New positions opened: 43 | Existing positions closed: 3
125% more funds holding in top 10
Funds holding in top 10: 4 → 9 (+5)
115% more capital invested
Capital invested by funds: $488M → $1.05B (+$562M)
61% more funds holding
Funds holding: 64 → 103 (+39)
19.73% more ownership
Funds ownership: 57.6% → 77.34% (+20%)
0% more repeat investments, than reductions
Existing positions increased: 25 | Existing positions reduced: 25
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BI
BVF Inc
San Francisco,
California
|
+$117M |
| 2 |
ACM
Aquilo Capital Management
San Francisco,
California
|
+$25.3M |
| 3 |
CC
Commodore Capital
New York
|
+$22.1M |
| 4 |
Federated Hermes
Pittsburgh,
Pennsylvania
|
+$21M |
| 5 |
FM
Frazier Management
Seattle,
Washington
|
+$15.8M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Wellington Management Group
Boston,
Massachusetts
|
-$52.4M |
| 2 |
ACA
Avoro Capital Advisors
New York
|
-$9.9M |
| 3 |
CAM
Cormorant Asset Management
Boston,
Massachusetts
|
-$4.24M |
| 4 |
Two Sigma Investments
New York
|
-$3.67M |
| 5 |
Morgan Stanley
New York
|
-$2.11M |
MRUS Hedge Fund Activity: Q4 2021 in Review
103 institutional investors reported a position in Merus (MRUS) for Q4 2021, worth a combined $1.05B — up 115% from $488M a quarter earlier.
Buyers outnumbered sellers: 43 funds opened new MRUS positions and 3 closed out — a net gain of 40 holders — while 25 added to existing stakes and 25 trimmed.
The largest buyer was BVF Inc, opening a new position worth an estimated $117M. The largest seller was Wellington Management Group, cutting an estimated $52.4M.
- 103 institutional investors held Merus (MRUS) as of Q4 2021, up from 64 in Q3 2021.
- Funds reported $1.05B of Merus stock for Q4 2021, up 115% quarter-over-quarter.
- 43 funds opened new Merus positions in Q4 2021 and 3 closed out, a net change of +40 holders.
- The largest Merus buyer in Q4 2021 was BVF Inc, an estimated $117M added.
- The largest Merus seller in Q4 2021 was Wellington Management Group, an estimated $52.4M sold.
Based on aggregated 13F filings for Q4 2021.