Merus
MRUS
MRUS was delisted on the 29th of December, 2025.
114 hedge funds and large institutions have $1.09B invested in Merus in 2023 Q2 according to their latest regulatory filings, with 25 funds opening new positions, 35 increasing their positions, 32 reducing their positions, and 15 closing their positions.
67% more first-time investments, than exits
New positions opened: 25 | Existing positions closed: 15
62% more capital invested
Capital invested by funds: $672M → $1.09B (+$415M)
9.91% more ownership
Funds ownership: 78.85% → 88.75% (+9.9%)
10% more funds holding
Funds holding: 104 → 114 (+10)
9% more repeat investments, than reductions
Existing positions increased: 35 | Existing positions reduced: 32
0% more funds holding in top 10
Funds holding in top 10: 8 → 8 (0)
5% less call options, than puts
Call options by funds: $1.9M | Put options by funds: $2M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
SC
Samlyn Capital
New York
|
+$26.8M |
| 2 |
FFM
Fairmount Funds Management
West Conshohocken,
Pennsylvania
|
+$24.3M |
| 3 |
RI
RTW Investments
New York
|
+$23M |
| 4 |
CC
Commodore Capital
New York
|
+$23M |
| 5 |
DM
Deerfield Management
New York
|
+$14.3M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BI
BVF Inc
San Francisco,
California
|
-$30.1M |
| 2 |
Wellington Management Group
Boston,
Massachusetts
|
-$10.1M |
| 3 |
ACM
Aquilo Capital Management
San Francisco,
California
|
-$9.85M |
| 4 |
VC
Vivo Capital
Palo Alto,
California
|
-$6.51M |
| 5 |
IC
Ikarian Capital
Dallas,
Texas
|
-$3.19M |
MRUS Hedge Fund Activity: Q2 2023 in Review
114 institutional investors reported a position in Merus (MRUS) for Q2 2023, worth a combined $1.09B — up 62% from $672M a quarter earlier.
Buyers outnumbered sellers: 25 funds opened new MRUS positions and 15 closed out — a net gain of 10 holders — while 35 added to existing stakes and 32 trimmed.
The largest buyer was Samlyn Capital, adding an estimated $26.8M. The largest seller was BVF Inc, cutting an estimated $30.1M.
- 114 institutional investors held Merus (MRUS) as of Q2 2023, up from 104 in Q1 2023.
- Funds reported $1.09B of Merus stock for Q2 2023, up 62% quarter-over-quarter.
- 25 funds opened new Merus positions in Q2 2023 and 15 closed out, a net change of +10 holders.
- The largest Merus buyer in Q2 2023 was Samlyn Capital, an estimated $26.8M added.
- The largest Merus seller in Q2 2023 was BVF Inc, an estimated $30.1M sold.
Based on aggregated 13F filings for Q2 2023.