Merus
MRUS
MRUS was delisted on the 29th of December, 2025.
37 hedge funds and large institutions have $251M invested in Merus in 2019 Q4 according to their latest regulatory filings, with 14 funds opening new positions, 11 increasing their positions, 8 reducing their positions, and 3 closing their positions.
367% more first-time investments, than exits
New positions opened: 14 | Existing positions closed: 3
42% more funds holding
Funds holding: 26 → 37 (+11)
38% more repeat investments, than reductions
Existing positions increased: 11 | Existing positions reduced: 8
19% more capital invested
Capital invested by funds: $212M → $251M (+$39.6M)
11.03% more ownership
Funds ownership: 50.78% → 61.8% (+11%)
0% more funds holding in top 10
Funds holding in top 10: 3 → 3 (0)
100% less call options, than puts
Call options by funds: $0 | Put options by funds: $10.1M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
EC
EcoR1 Capital
San Francisco,
California
|
+$25M |
| 2 |
CAM
Cormorant Asset Management
Boston,
Massachusetts
|
+$16.1M |
| 3 |
BBA
Baker Bros. Advisors
New York
|
+$14.1M |
| 4 |
Federated Hermes
Pittsburgh,
Pennsylvania
|
+$13.8M |
| 5 |
DCM
Driehaus Capital Management
Chicago,
Illinois
|
+$13.1M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BI
BVF Inc
San Francisco,
California
|
-$23.6M |
| 2 |
Wellington Management Group
Boston,
Massachusetts
|
-$2.28M |
| 3 |
ACP
Acuta Capital Partners
Redwood City,
California
|
-$1.23M |
| 4 |
GIP
Granite Investment Partners
El Segundo,
California
|
-$301K |
| 5 |
AC
Athanor Capital
New York
|
-$242K |
MRUS Hedge Fund Activity: Q4 2019 in Review
37 institutional investors reported a position in Merus (MRUS) for Q4 2019, worth a combined $251M — up 19% from $212M a quarter earlier.
Buyers outnumbered sellers: 14 funds opened new MRUS positions and 3 closed out — a net gain of 11 holders — while 11 added to existing stakes and 8 trimmed.
The largest buyer was EcoR1 Capital, adding an estimated $25M. The largest seller was BVF Inc, cutting an estimated $23.6M.
- 37 institutional investors held Merus (MRUS) as of Q4 2019, up from 26 in Q3 2019.
- Funds reported $251M of Merus stock for Q4 2019, up 19% quarter-over-quarter.
- 14 funds opened new Merus positions in Q4 2019 and 3 closed out, a net change of +11 holders.
- The largest Merus buyer in Q4 2019 was EcoR1 Capital, an estimated $25M added.
- The largest Merus seller in Q4 2019 was BVF Inc, an estimated $23.6M sold.
Based on aggregated 13F filings for Q4 2019.