Merus
MRUS
MRUS was delisted on the 29th of December, 2025.
131 hedge funds and large institutions have $1.42B invested in Merus in 2023 Q4 according to their latest regulatory filings, with 32 funds opening new positions, 40 increasing their positions, 41 reducing their positions, and 13 closing their positions.
146% more first-time investments, than exits
New positions opened: 32 | Existing positions closed: 13
27% more capital invested
Capital invested by funds: $1.12B → $1.42B (+$300M)
16% more funds holding
Funds holding: 113 → 131 (+18)
2.28% more ownership
Funds ownership: 87.16% → 89.43% (+2.3%)
2% less repeat investments, than reductions
Existing positions increased: 40 | Existing positions reduced: 41
10% less funds holding in top 10
Funds holding in top 10: 10 → 9 (-1)
72% less call options, than puts
Call options by funds: $963K | Put options by funds: $3.41M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Pictet Asset Management
Carouge,
Switzerland
|
+$28.8M |
| 2 |
Federated Hermes
Pittsburgh,
Pennsylvania
|
+$17.6M |
| 3 |
5VM
5AM Venture Management
San Francisco,
California
|
+$12.2M |
| 4 |
Morgan Stanley
New York
|
+$11.4M |
| 5 |
ACA
Avoro Capital Advisors
New York
|
+$10.4M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
B
Braidwell
Stamford,
Connecticut
|
-$35.7M |
| 2 |
FFM
Fairmount Funds Management
West Conshohocken,
Pennsylvania
|
-$27.2M |
| 3 |
DM
Deerfield Management
New York
|
-$20M |
| 4 |
Wellington Management Group
Boston,
Massachusetts
|
-$16.9M |
| 5 |
PCH
Polar Capital Holdings
London,
United Kingdom
|
-$11.8M |
MRUS Hedge Fund Activity: Q4 2023 in Review
131 institutional investors reported a position in Merus (MRUS) for Q4 2023, worth a combined $1.42B — up 27% from $1.12B a quarter earlier.
Buyers outnumbered sellers: 32 funds opened new MRUS positions and 13 closed out — a net gain of 19 holders — while 40 added to existing stakes and 41 trimmed.
The largest buyer was Pictet Asset Management, opening a new position worth an estimated $28.8M. The largest seller was Braidwell, cutting an estimated $35.7M.
- 131 institutional investors held Merus (MRUS) as of Q4 2023, up from 113 in Q3 2023.
- Funds reported $1.42B of Merus stock for Q4 2023, up 27% quarter-over-quarter.
- 32 funds opened new Merus positions in Q4 2023 and 13 closed out, a net change of +19 holders.
- The largest Merus buyer in Q4 2023 was Pictet Asset Management, an estimated $28.8M added.
- The largest Merus seller in Q4 2023 was Braidwell, an estimated $35.7M sold.
Based on aggregated 13F filings for Q4 2023.