Latest Institutional Purchases of Merck & Co., Inc. (MRK)
This list provides information on the latest institutional transactions involving Merck & Co., Inc. (MRK) stock that were buys. The list includes the name of the institution, the number of shares exchanged, the range of values for the transaction, and the number of shares held by the institution after the purchase has occurred.
| Report Date | Institution (Fund) | Operation | Option | Shares change | Value Range | Shares Held | Trade History |
|---|---|---|---|---|---|---|---|
|
Nov 12, 2025
Q3 2025
|
Ci Investments Inc.
Toronto, A6 |
BUY
|
- |
664K+ 86.63% |
$51.5M - $58M
|
1.43M
$133M
|
|
|
Nov 14, 2025
Q3 2025
|
Holocene Advisors, LP
New York, NY |
BUY
|
- |
646KNew |
$50.1M - $56.4M
|
646K
$60M
|
|
|
Nov 13, 2025
Q3 2025
|
Jane Street Group, LLC
New York, NY |
BUY
|
- |
643K+ 7683.43% |
$49.9M - $56.2M
|
651K
$60.5M
|
|
|
Nov 13, 2025
Q3 2025
|
Hsbc Holdings PLC
London, X0 |
BUY
|
- |
600K+ 7.71% |
$46.6M - $52.4M
|
8.39M
$779M
|
|
|
Nov 13, 2025
Q3 2025
|
Wells Fargo & Company
San Francisco, CA |
BUY
|
PUT |
574K+ 71775.0% |
$44.6M - $50.2M
|
575K
$53.4M
|
|
|
Nov 14, 2025
Q3 2025
|
Brandes Investment Partners, LP
La Jolla, CA |
BUY
|
- |
510K+ 26.69% |
$39.6M - $44.6M
|
2.42M
$225M
|
|
|
Oct 15, 2025
Q3 2025
|
Swedbank Ab
Stockholm, V7 |
BUY
|
- |
469K+ 5.96% |
$36.4M - $41M
|
8.34M
$775M
|
|
|
Nov 14, 2025
Q3 2025
|
Lazard Asset Management LLC
New York, NY |
BUY
|
- |
455K+ 6.88% |
$35.3M - $39.7M
|
7.06M
$656M
|
|
|
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
|
Tri Locum Partners LP
New York, NY |
BUY
|
- |
447KNew |
$34.7M - $39M
|
447K
$41.5M
|
|
|
Nov 14, 2025
Q3 2025
|
Toronto Dominion Bank
Toronto, Ontario, A6 |
BUY
|
CALL |
409KNew |
$31.7M - $35.7M
|
409K
$37.9M
|
|
|
Nov 14, 2025
Q3 2025
|
Morgan Stanley
New York, NY |
BUY
|
- |
386K+ 0.87% |
$29.9M - $33.7M
|
44.6M
$4.14B
|
|
|
Nov 14, 2025
Q3 2025
|
Schonfeld Strategic Advisors LLC
New York, NY |
BUY
|
- |
377K+ 747.08% |
$29.3M - $33M
|
428K
$39.7M
|
|
|
Nov 12, 2025
Q3 2025
|
Natixis Advisors, L.P.
Boston, MA |
BUY
|
- |
371K+ 19.13% |
$28.8M - $32.4M
|
2.31M
$215M
|
|
|
Oct 27, 2025
Q3 2025
|
Conning Inc.
|
BUY
|
- |
366K+ 1059.87% |
$28.4M - $32M
|
401K
$37.2M
|
|
|
Nov 13, 2025
Q3 2025
|
Marshall Wace, LLP
London, X0 |
BUY
|
PUT |
350K+ 208.45% |
$27.2M - $30.6M
|
518K
$48.1M
|
|
|
Nov 14, 2025
Q3 2025
|
Caisse De Depot Et Placement Du Quebec
Montreal, A8 |
BUY
|
- |
347K+ 7.85% |
$26.9M - $30.3M
|
4.77M
$443M
|
|
|
Nov 14, 2025
Q3 2025
|
Cetera Investment Advisers
Schaumburg, IL |
BUY
|
- |
338K+ 45.87% |
$26.3M - $29.6M
|
1.08M
$100M
|
|
|
Nov 04, 2025
Q3 2025
|
Donaldson Capital Management, LLC
Evansville, IN |
BUY
|
- |
314K+ 66.28% |
$24.3M - $27.4M
|
787K
$73.1M
|
|
|
Oct 28, 2025
Q3 2025
|
Sequoia Financial Advisors, LLC
|
BUY
|
- |
312KNew |
$24.2M - $27.2M
|
312K
$28.9M
|
|
|
Oct 22, 2025
Q3 2025
|
Adams Diversified Equity Fund, Inc.
|
BUY
|
- |
309KNew |
$24M - $27M
|
309K
$28.7M
|
|
|
Nov 13, 2025
Q3 2025
|
Ceredex Value Advisors LLC
|
BUY
|
- |
308KNew |
$23.9M - $26.9M
|
308K
$28.6M
|
|
|
Nov 12, 2025
Q3 2025
|
Victory Capital Management Inc
|
BUY
|
- |
301K+ 6.79% |
$23.4M - $26.3M
|
4.73M
$440M
|
|
|
Nov 14, 2025
Q3 2025
|
Aquatic Capital Management LLC
Chicago, IL |
BUY
|
- |
292K+ 114.86% |
$22.6M - $25.5M
|
545K
$50.6M
|
|
|
Nov 03, 2025
Q3 2025
|
Ruffer LLP
|
BUY
|
- |
278K+ 305.63% |
$21.6M - $24.3M
|
369K
$34.3M
|
|
|
Nov 13, 2025
Q3 2025
|
Eisler Capital Management Ltd.
London, X0 |
BUY
|
PUT |
277K+ 312.98% |
$21.5M - $24.2M
|
366K
$34M
|
|
|
Nov 14, 2025
Q3 2025
|
Natixis
Paris, I0 |
BUY
|
- |
268K+ 44.66% |
$20.8M - $23.4M
|
869K
$80.7M
|
|
|
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
|
Tcw Group Inc
|
BUY
|
- |
256K+ 107.18% |
$19.8M - $22.3M
|
494K
$45.9M
|
|
|
Nov 12, 2025
Q3 2025
|
Dimensional Fund Advisors LP
Austin, TX |
BUY
|
- |
254K+ 2.4% |
$19.7M - $22.2M
|
10.9M
$1.01B
|
|
|
Nov 05, 2025
Q3 2025
|
Bi Asset Management Fondsmaeglerselskab A
Kobenhavn, G7 |
BUY
|
- |
254K+ 25.63% |
$19.7M - $22.2M
|
1.25M
$116M
|
|
|
Nov 04, 2025
Q3 2025
|
Mediolanum International Funds LTD
Dublin 1, L2 |
BUY
|
- |
247K+ 37.93% |
$19.1M - $21.6M
|
897K
$83.3M
|
|
|
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
|
Ieq Capital, LLC
|
BUY
|
- |
230K+ 41.29% |
$17.8M - $20.1M
|
786K
$73M
|
|
|
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
|
Quantinno Capital Management LP
New York, NY |
BUY
|
- |
216K+ 53.23% |
$16.7M - $18.8M
|
620K
$57.6M
|
|
|
Nov 07, 2025
Q3 2025
|
Mondrian Investment Partners LTD
London, X0 |
BUY
|
- |
215K+ 14.99% |
$16.7M - $18.8M
|
1.65M
$153M
|
|
|
Oct 23, 2025
Q3 2025
|
Moran Wealth Management, LLC
Naples, FL |
BUY
|
- |
215KNew |
$16.7M - $18.8M
|
215K
$19.9M
|
|
|
Nov 13, 2025
Q3 2025
|
Canada Pension Plan Investment Board
Toronto Ontario, A6 |
BUY
|
- |
212K+ 5.82% |
$16.4M - $18.5M
|
3.85M
$357M
|
|
|
Oct 27, 2025
Q3 2025
|
Nordea Investment Management Ab
Stockholm, V7 |
BUY
|
- |
210K+ 1.95% |
$16.3M - $18.3M
|
10.9M
$1.02B
|
|
|
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 10, 2025
Q3 2025
|
Mitsubishi Ufj Kokusai Asset Management Co., Ltd.
|
BUY
|
- |
195K+ 3.92% |
$15.1M - $17M
|
5.17M
$480M
|
|
|
Nov 10, 2025
Q3 2025
|
Payden & Rygel
Los Angeles, CA |
BUY
|
- |
194K+ 5234.5% |
$15.1M - $17M
|
198K
$18.4M
|
|
|
Nov 14, 2025
Q3 2025
|
Advisor Group Holdings, Inc.
Phoenix, AZ |
BUY
|
- |
186K+ 25.96% |
$14.4M - $16.2M
|
902K
$83.8M
|
|
|
Nov 13, 2025
Q3 2025
|
Nearwater Capital Markets, LTD
New York, NY |
BUY
|
- |
186KNew |
$14.4M - $16.2M
|
186K
$17.2M
|
|
|
Oct 15, 2025
Q3 2025
|
Cwm, LLC
|
BUY
|
- |
183K+ 23.72% |
$14.2M - $16M
|
955K
$88.7M
|
|
|
Nov 14, 2025
Q3 2025
|
Schonfeld Strategic Advisors LLC
New York, NY |
BUY
|
PUT |
176KNew |
$13.7M - $15.4M
|
176K
$16.3M
|
|
|
Nov 03, 2025
Q3 2025
|
National Pension Service
Jeonju Si, Jeollabuk Do, M5 |
BUY
|
- |
176K+ 3.17% |
$13.6M - $15.3M
|
5.71M
$530M
|
|
|
Nov 14, 2025
Q3 2025
|
Bollard Group LLC
Boston, MA |
BUY
|
- |
173KNew |
$13.5M - $15.1M
|
173K
$16.1M
|
|
|
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
|
|