Merck
MRK
3,448 hedge funds and large institutions have $181B invested in Merck in 2025 Q1 according to their latest regulatory filings, with 180 funds opening new positions, 1,347 increasing their positions, 1,599 reducing their positions, and 278 closing their positions.
11% more call options, than puts
Call options by funds: $2.57B | Put options by funds: $2.32B
0.43% more ownership
Funds ownership: 78.27% → 78.7% (+0.43%)
4% less funds holding
Funds holding: 3,608 → 3,448 (-160)
8% less capital invested
Capital invested by funds: $197B → $181B (-$16.1B)
11% less funds holding in top 10
Funds holding in top 10: 73 → 65 (-8)
16% less repeat investments, than reductions
Existing positions increased: 1,347 | Existing positions reduced: 1,599
35% less first-time investments, than exits
New positions opened: 180 | Existing positions closed: 278
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Charles Schwab
San Francisco,
California
|
+$2.72B |
| 2 |
Fisher Asset Management
Camas,
Washington
|
+$778M |
| 3 |
Arrowstreet Capital
Boston,
Massachusetts
|
+$737M |
| 4 |
Pacer Advisors
Malvern,
Pennsylvania
|
+$473M |
| 5 |
UBS Group
Zurich,
Switzerland
|
+$354M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Capital World Investors
Los Angeles,
California
|
-$787M |
| 2 |
AIM
Alphinity Investment Management
Sydney,
Australia
|
-$693M |
| 3 |
Fidelity Investments
Boston,
Massachusetts
|
-$518M |
| 4 |
Bank of America
Charlotte,
North Carolina
|
-$501M |
| 5 |
Royal Bank of Canada
Toronto,
Ontario, Canada
|
-$392M |
MRK Hedge Fund Activity: Q1 2025 in Review
3,448 of the 7,460 institutional investors tracked by Wall St. Rank reported a position in Merck (MRK) for Q1 2025, worth a combined $181B — down 8.2% from $197B a quarter earlier.
Sellers outnumbered buyers: 278 funds closed out of MRK and 180 opened new positions — a net loss of 98 holders — while 1,599 trimmed existing stakes and 1,347 added.
The largest buyer was Charles Schwab, adding an estimated $2.72B. The largest seller was Capital World Investors, exiting entirely with an estimated $787M sold.
- 3,448 institutional investors held Merck (MRK) as of Q1 2025, down from 3,608 in Q4 2024.
- Funds reported $181B of Merck stock for Q1 2025, down 8.2% quarter-over-quarter.
- 180 funds opened new Merck positions in Q1 2025 and 278 closed out, a net change of -98 holders.
- The largest Merck buyer in Q1 2025 was Charles Schwab, an estimated $2.72B added.
- The largest Merck seller in Q1 2025 was Capital World Investors, an estimated $787M sold.
Based on aggregated 13F filings for Q1 2025.