Loomis, Sayles & Company
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Loomis, Sayles & Company’s Merck MRK Stock Holding History

Loomis, Sayles & Company’s Portfolio MRK Stock Details MRK Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$8.98M Sell
74,671
-80,639
-52% -$9.31M 0.01% 368
2025
Q4 		$16.3M Sell
155,310
-54,201
-26% -$5.09M 0.02% 269
2025
Q3 		$17.6M Sell
209,511
-22,081
-10% -$1.82M 0.02% 257
2025
Q2 		$18.3M Buy
231,592
+49,210
+27% +$3.91M 0.02% 255
2025
Q1 		$16.4M Sell
182,382
-4,837
-3% -$452K 0.02% 268
2024
Q4 		$18.6M Buy
187,219
+55,795
+42% +$5.75M 0.02% 269
2024
Q3 		$14.9M Buy
131,424
+56,495
+75% +$6.71M 0.02% 302
2024
Q2 		$9.28M Buy
74,929
+37,763
+102% +$4.86M 0.01% 371
2024
Q1 		$4.9M Sell
37,166
-4,806
-11% -$592K 0.01% 412
2023
Q4 		$4.58M Buy
41,972
+33,110
+374% +$3.44M 0.01% 405
2023
Q3 		$913K Sell
8,862
-2,587
-23% -$279K ﹤0.01% 455
2023
Q2 		$1.32M Sell
11,449
-35,000
-75% -$3.97M ﹤0.01% 449
2023
Q1 		$4.94M Sell
46,449
-3,394
-7% -$366K 0.01% 401
2022
Q4 		$5.53M Buy
49,843
+1,147
+2% +$117K 0.01% 364
2022
Q3 		$4.19M Sell
48,696
-324,995
-87% -$29M 0.01% 376
2022
Q2 		$34.1M Sell
373,691
-225,642
-38% -$20M 0.06% 149
2022
Q1 		$49.2M Buy
599,333
+186,476
+45% +$14.7M 0.07% 129
2021
Q4 		$31.6M Sell
412,857
-174,861
-30% -$13.9M 0.04% 245
2021
Q3 		$44.1M Buy
587,718
+57,083
+11% +$4.34M 0.05% 178
2021
Q2 		$41.3M Sell
530,635
-97,675
-16% -$7.27M 0.05% 199
2021
Q1 		$46.2M Buy
628,310
+481,270
+327% +$35.5M 0.06% 157
2020
Q4 		$11.5M Buy
147,040
+133,003
+948% +$10.2M 0.02% 347
2020
Q3 		$1.11M Sell
14,037
-1,075
-7% -$84.2K ﹤0.01% 432
2020
Q2 		$1.11M Sell
15,112
-5,839,501
-100% -$440M ﹤0.01% 442
2020
Q1 		$430M Sell
5,854,613
-318,914
-5% -$25.1M 0.89% 32
2019
Q4 		$536M Buy
6,173,527
+213,241
+4% +$17.5M 0.91% 32
2019
Q3 		$479M Buy
5,960,286
+53,304
+0.9% +$4.27M 0.92% 33
2019
Q2 		$473M Buy
5,906,982
+2,114
+0% +$162K 0.88% 34
2019
Q1 		$469M Buy
5,904,868
+37,457
+0.6% +$2.8M 0.92% 33
2018
Q4 		$428M Sell
5,867,411
-318,538
-5% -$22.5M 1.01% 32
2018
Q3 		$419M Sell
6,185,949
-117,138
-2% -$7.46M 0.82% 33
2018
Q2 		$365M Buy
6,303,087
+29,553
+0.5% +$1.67M 0.74% 34
2018
Q1 		$326M Buy
6,273,534
+13,234
+0.2% +$715K 0.69% 33
2017
Q4 		$336M Buy
6,260,300
+45,551
+0.7% +$2.53M 0.7% 33
2017
Q3 		$380M Buy
6,214,749
+72,575
+1% +$4.4M 0.83% 32
2017
Q2 		$376M Buy
6,142,174
+82,711
+1% +$5.03M 0.88% 32
2017
Q1 		$367M Sell
6,059,463
-267,003
-4% -$16.2M 0.92% 32
2016
Q4 		$355M Buy
6,326,466
+194,808
+3% +$11.4M 0.87% 33
2016
Q3 		$365M Buy
6,131,658
+98,092
+2% +$5.74M 0.92% 32
2016
Q2 		$332M Buy
6,033,566
+141,056
+2% +$7.51M 0.9% 31
2016
Q1 		$297M Buy
5,892,510
+301,827
+5% +$14.8M 0.84% 32
2015
Q4 		$282M Buy
5,590,683
+337,634
+6% +$17M 0.79% 33
2015
Q3 		$248M Buy
5,253,049
+351,106
+7% +$18.7M 0.73% 34
2015
Q2 		$266M Buy
4,901,943
+434,353
+10% +$24.4M 0.73% 33
2015
Q1 		$245M Buy
4,467,590
+139,100
+3% +$7.88M 0.68% 34
2014
Q4 		$235M Sell
4,328,490
-115,616
-3% -$6.44M 0.65% 37
2014
Q3 		$251M Sell
4,444,106
-49,038
-1% -$2.75M 0.74% 31
2014
Q2 		$248M Sell
4,493,144
-673,277
-13% -$36.7M 0.7% 30
2014
Q1 		$280M Buy
5,166,421
+673,242
+15% +$34.9M 0.79% 24
2013
Q4 		$215M Sell
4,493,179
-56,385
-1% -$2.58M 0.64% 26
2013
Q3 		$207M Buy
4,549,564
+1,007,137
+28% +$46M 0.67% 25
2013
Q2 		$157K Buy
+3,542,427
New +$158M 0.56% 29

Other funds holding MRK

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
Charles Schwab
Charles Schwab San Francisco, California $654B AUM 26.35% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Loomis, Sayles & Company's MRK Position: Q1 2026 in Review

Loomis, Sayles & Company reduced its Merck (MRK) stake by 52% in Q1 2026, selling an estimated $9.31M and leaving 74,671 shares worth $8.98M. The position accounts for 0.01% of the portfolio, ranked #368.

Loomis, Sayles & Company first reported a position in MRK in Q2 2013 and has held it in 52 quarters since. The position peaked at $536M in Q4 2019. 3,780 funds tracked by Wall St. Rank hold MRK as of Q1 2026.

  • Loomis, Sayles & Company held 74,671 shares of Merck worth $8.98M as of Q1 2026.
  • Loomis, Sayles & Company sold 80,639 Merck shares in Q1 2026, an estimated $9.31M.
  • Merck made up 0.01% of Loomis, Sayles & Company's portfolio in Q1 2026, its #368 holding.
  • Loomis, Sayles & Company first reported a position in Merck in Q2 2013 and has held it in 52 quarters since.
  • Loomis, Sayles & Company's Merck position peaked at $536M in Q4 2019.
  • 3,780 funds tracked by Wall St. Rank held Merck as of Q1 2026.

Based on Loomis, Sayles & Company's 13F filing for Q1 2026, filed 14 May 2026.