Latest Institutional Transactions on Merck & Co., Inc. (MRK)
This table provides information on the latest institutional transactions involving Merck & Co., Inc. (MRK) stock. The table includes the name of the institution, the type of operation (buy or sell), whether options were involved, the number of shares exchanged, the range of values for the transaction, and the number of shares held by the institution after the transaction has occurred.
| Report Date | Institution (Fund) | Operation | Option | Shares change | Value Range | Shares Held | Trade History |
|---|---|---|---|---|---|---|---|
|
Nov 14, 2025
Q3 2025
|
Woodline Partners LP
San Francisco, CA |
BUY
|
- |
130K+ 16.72% |
$10.1M - $11.4M
|
909K
$84.4M
|
|
|
Nov 14, 2025
Q3 2025
|
Capula Management LTD
Grand Cayman, E9 |
SELL
|
- |
-5.02K- 55.07% |
$389K - $438K
|
4.09K
$380K
|
|
|
Nov 14, 2025
Q3 2025
|
Capula Management LTD
Grand Cayman, E9 |
BUY
|
PUT |
8.9K+ 111.25% |
$691K - $778K
|
16.9K
$1.57M
|
|
|
Nov 14, 2025
Q3 2025
|
Capstone Investment Advisors, LLC
New York, NY |
SELL
|
- |
-1.61K- 1.5% |
$125K - $141K
|
106K
$9.83M
|
|
|
Nov 14, 2025
Q3 2025
|
Capstone Investment Advisors, LLC
New York, NY |
BUY
|
PUT |
196K+ 81.96% |
$15.2M - $17.1M
|
435K
$40.4M
|
|
|
Nov 14, 2025
Q3 2025
|
Mairs & Power Inc
St Paul, MN |
SELL
|
- |
-4.68K- 8.24% |
$363K - $409K
|
52.2K
$4.85M
|
|
|
Nov 14, 2025
Q3 2025
|
Voleon Capital Management LP
Berkeley, CA |
BUY
|
- |
143K+ 105.93% |
$11.1M - $12.5M
|
278K
$25.8M
|
|
|
Nov 14, 2025
Q3 2025
|
Parallax Volatility Advisers, L.P.
San Francisco, CA |
SELL
|
PUT |
-79.7K- 79.94% |
$6.18M - $6.96M
|
20K
$1.86M
|
|
|
Nov 14, 2025
Q3 2025
|
Amussen Hunsaker Associates LLC
Salt Lake City, UT |
BUY
|
- |
10+ 0.13% |
$776 - $874
|
7.97K
$740K
|
|
|
Nov 14, 2025
Q3 2025
|
Evergreen Wealth Solutions, LLC
Williamsport, PA |
SELL
|
- |
-720- 13.87% |
$55.9K - $62.9K
|
4.47K
$415K
|
|
|
Nov 14, 2025
Q3 2025
|
Kinloch Capital, LLC
Glen Allen, VA |
BUY
|
- |
23+ 0.53% |
$1.78K - $2.01K
|
4.36K
$405K
|
|
|
Nov 14, 2025
Q3 2025
|
Point72 Europe (London) LLP
London, X0 |
BUY
|
- |
257KNew |
$19.9M - $22.4M
|
257K
$23.8M
|
|
|
Nov 14, 2025
Q3 2025
|
Cubist Systematic Strategies, LLC
Stamford, CT |
BUY
|
- |
454K+ 10314.98% |
$35.2M - $39.7M
|
458K
$42.6M
|
|
|
Nov 14, 2025
Q3 2025
|
Cubist Systematic Strategies, LLC
Stamford, CT |
SELL
|
PUT |
-224K- 88.91% |
$17.4M - $19.5M
|
27.9K
$2.59M
|
|
|
Nov 14, 2025
Q3 2025
|
Ashford Capital Management Inc
Wilmington, DE |
BUY
|
- |
8.32K+ 45.32% |
$646K - $727K
|
26.7K
$2.48M
|
|
|
Nov 14, 2025
Q3 2025
|
Steven Cohen
Point72 Asset Management, L.P. | Stamford, Ct
|
BUY
|
- |
1.26M+ 21671.6% |
$97.5M - $110M
|
1.26M
$117M
|
|
|
Nov 14, 2025
Q3 2025
|
Steven Cohen
Point72 Asset Management, L.P. | Stamford, Ct
|
BUY
|
PUT |
39.3K+ 485.19% |
$3.05M - $3.43M
|
47.4K
$4.4M
|
|
|
Nov 14, 2025
Q3 2025
|
Bontempo Ohly Capital Mgmt LLC
Bethesda, MD |
BUY
|
- |
750+ 1.61% |
$58.2K - $65.5K
|
47.2K
$4.39M
|
|
|
Nov 14, 2025
Q3 2025
|
Df Dent & CO Inc
Baltimore, MD |
BUY
|
- |
31.6K+ 62.46% |
$2.45M - $2.76M
|
82.1K
$7.62M
|
|
|
Nov 14, 2025
Q3 2025
|
Pfm Health Sciences, LP
San Francisco, CA |
BUY
|
- |
236KNew |
$18.3M - $20.7M
|
236K
$22M
|
|
|
Nov 14, 2025
Q3 2025
|
D. E. Shaw & Co., Inc.
New York, NY |
SELL
|
- |
-6.9M- 66.55% |
$535M - $603M
|
3.47M
$322M
|
|
|
Nov 14, 2025
Q3 2025
|
D. E. Shaw & Co., Inc.
New York, NY |
BUY
|
PUT |
137K+ 17.68% |
$10.7M - $12M
|
915K
$84.9M
|
|
|
Nov 14, 2025
Q3 2025
|
Cardiff Park Advisors, LLC
San Marcos, CA |
BUY
|
- |
65+ 1.44% |
$5.04K - $5.68K
|
4.56K
$424K
|
|
|
Nov 14, 2025
Q3 2025
|
Joel Greenblatt
Gotham Asset Management, LLC | New York, Ny
|
BUY
|
- |
113K+ 23.63% |
$8.79M - $9.89M
|
592K
$55M
|
|
|
Nov 14, 2025
Q3 2025
|
Occudo Quantitative Strategies LP
Fort Lauderdale, FL |
BUY
|
- |
18.8KNew |
$1.46M - $1.64M
|
18.8K
$1.74M
|
|
|
Nov 14, 2025
Q3 2025
|
Aqr Capital Management LLC
Greenwich, CT |
BUY
|
- |
1.87M+ 21.29% |
$145M - $163M
|
10.7M
$990M
|
|
|
Nov 14, 2025
Q3 2025
|
New England Asset Management Inc
Farmington, CT |
BUY
|
- |
13.4K+ 25.7% |
$1.04M - $1.17M
|
65.6K
$6.09M
|
|
|
Nov 14, 2025
Q3 2025
|
Westwood Holdings Group Inc
Dallas, TX |
SELL
|
- |
-140- 0.48% |
$10.9K - $12.2K
|
29.2K
$2.71M
|
|
|
Nov 14, 2025
Q3 2025
|
Man Group PLC
London, X0 |
SELL
|
- |
-377K- 12.79% |
$29.3M - $33M
|
2.57M
$239M
|
|
|
Nov 14, 2025
Q3 2025
|
Man Group PLC
London, X0 |
SELL
|
PUT |
-135K- 45.36% |
$10.4M - $11.8M
|
162K
$15M
|
|
|
Nov 14, 2025
Q3 2025
|
Deerfield Management Company, L.P. (Series C)
New York, NY |
BUY
|
- |
172K+ 20.09% |
$13.4M - $15.1M
|
1.03M
$95.6M
|
|
|
Nov 14, 2025
Q3 2025
|
Holt Capital Advisors, L.L.C. Dba Holt Capital Partners, L.P.
Fort Worth, TX |
SELL
|
- |
-700- 21.88% |
$54.3K - $61.2K
|
2.5K
$232K
|
|
|
Nov 14, 2025
Q3 2025
|
Amundi
Paris, I0 |
SELL
|
- |
-1.32M- 7.97% |
$102M - $115M
|
15.2M
$1.41B
|
|
|
Nov 14, 2025
Q3 2025
|
Ancora Advisors, LLC
Cleveland, OH |
SELL
|
- |
-3.49K- 12.87% |
$270K - $304K
|
23.6K
$2.19M
|
|
|
Nov 14, 2025
Q3 2025
|
Brevan Howard Capital Management LP
St. Helier, Y9 |
SELL
|
- |
-356K- 79.26% |
$27.6M - $31.1M
|
93.1K
$8.65M
|
|
|
Nov 14, 2025
Q3 2025
|
Ken Griffin
Citadel Advisors LLC | Chicago, Il
|
BUY
|
- |
968KNew |
$75.1M - $84.6M
|
968K
$89.9M
|
|
|
Nov 14, 2025
Q3 2025
|
Ken Griffin
Citadel Advisors LLC | Chicago, Il
|
SELL
|
PUT |
-561K- 12.61% |
$43.5M - $49M
|
3.89M
$361M
|
|
|
Nov 14, 2025
Q3 2025
|
Creative Planning
Overland Park, KS |
BUY
|
- |
132K+ 13.96% |
$10.2M - $11.5M
|
1.08M
$100M
|
|
|
Nov 14, 2025
Q3 2025
|
Fred Alger Management, LLC
New York, NY |
BUY
|
- |
10.5K+ 52.0% |
$816K - $919K
|
30.7K
$2.86M
|
|
|
Nov 14, 2025
Q3 2025
|
Gallagher Fiduciary Advisors, LLC
Rolling Meadows, IL |
SELL
|
- |
-4.07K- 34.31% |
$315K - $355K
|
7.78K
$723K
|
|
|
Nov 14, 2025
Q3 2025
|
High Falls Advisors, Inc
Rochester, NY |
SELL
|
- |
-62- 1.79% |
$4.81K - $5.42K
|
3.41K
$316K
|
|
|
Nov 14, 2025
Q3 2025
|
Hilltop Holdings Inc.
Dallas, TX |
SELL
|
- |
-6.17K- 10.62% |
$478K - $539K
|
51.9K
$4.82M
|
|
|
Nov 14, 2025
Q3 2025
|
Holocene Advisors, LP
New York, NY |
BUY
|
- |
646KNew |
$50.1M - $56.4M
|
646K
$60M
|
|
|
Nov 14, 2025
Q3 2025
|
Kamunting Street Capital Management, L.P.
Miami Beach, FL |
BUY
|
- |
34.6K+ 224.46% |
$2.68M - $3.02M
|
50K
$4.64M
|
|
|
Nov 14, 2025
Q3 2025
|
Karani Asset Management LLC
New York, NY |
SELL
|
- |
-202- 1.77% |
$15.7K - $17.6K
|
11.2K
$1.04M
|
|
|
Nov 14, 2025
Q3 2025
|
Israel Englander
Millennium Management LLC | New York, Ny
|
SELL
|
- |
-226K- 22.88% |
$17.6M - $19.8M
|
763K
$70.9M
|
|
|
Nov 14, 2025
Q3 2025
|
Israel Englander
Millennium Management LLC | New York, Ny
|
BUY
|
PUT |
227K+ 16.56% |
$17.6M - $19.8M
|
1.6M
$148M
|
|
|
Nov 14, 2025
Q3 2025
|
Schonfeld Strategic Advisors LLC
New York, NY |
BUY
|
- |
377K+ 747.08% |
$29.3M - $33M
|
428K
$39.7M
|
|
|
Nov 14, 2025
Q3 2025
|
Schonfeld Strategic Advisors LLC
New York, NY |
BUY
|
PUT |
176KNew |
$13.7M - $15.4M
|
176K
$16.3M
|
|
|
Nov 14, 2025
Q3 2025
|
Paul Tudor Jones
Tudor Investment Corp Et Al | Stamford, Ct
|
BUY
|
- |
787KNew |
$61.1M - $68.8M
|
787K
$73.1M
|
|