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Merck
MRK
MRK
3,650 hedge funds and large institutions have $207B invested in Merck in 2025 Q4 according to their latest regulatory filings, with 545 funds opening new positions, 1,372 increasing their positions, 1,398 reducing their positions, and 131 closing their positions.
New
Increased
Maintained
Reduced
Closed
316% more first-time investments, than exits
New positions opened: 545 | Existing positions closed: 131
67% more funds holding in top 10
Funds holding in top 10: 46 → 77 (+31)
43% more call options, than puts
Call options by funds: $3.76B | Put options by funds: $2.62B
30% more capital invested
Capital invested by funds: $160B → $207B (+$47.2B)
10% more funds holding
Funds holding: 3,308 → 3,650 (+342)
2.9% more ownership
Funds ownership: 76.23% → 79.13% (+2.9%)
2% less repeat investments, than reductions
Existing positions increased: 1,372 | Existing positions reduced: 1,398
Holders
3,650
Holders Change
+342
Holders Change %
+10.34%
% of All Funds
44.4%
Holding in Top 10
77
Holding in Top 10 Change
+31
Holding in Top 10 Change %
+67.39%
% of All Funds
0.94%
New
545
Increased
1,372
Reduced
1,398
Closed
131
Calls
$3.76B
Puts
$2.62B
Net Calls
+$1.14B
Net Calls Change
+$810M
Top Buyers
| 1 |
Wellington Management Group
Boston,
Massachusetts
|
+$1.05B |
| 2 |
Fidelity Investments
Boston,
Massachusetts
|
+$696M |
| 3 |
Millennium Management
New York
|
+$567M |
| 4 |
Citadel Advisors
Miami,
Florida
|
+$549M |
| 5 |
Jennison Associates
New York
|
+$522M |
Top Sellers
| 1 |
Arrowstreet Capital
Boston,
Massachusetts
|
-$823M |
| 2 |
JP Morgan Chase
New York
|
-$563M |
| 3 |
Charles Schwab
San Francisco,
California
|
-$482M |
| 4 |
Assenagon Asset Management
Senningerberg,
Luxembourg
|
-$465M |
| 5 |
ClearBridge Investments
New York
|
-$410M |