Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionJupiter Asset Management Ltd
Latest Disclosed Ownership3,046 shares
Latest Disclosed Value $ 366,403
Jupiter Asset Management Ltd ownership in MRK / Merck & Co., Inc.

On May 12, 2026 - Jupiter Asset Management Ltd filed a 13F-HR form disclosing ownership of 3,046 shares of Merck & Co., Inc. (MX:MRK) valued at $366,403 USD as of March 31, 2026. The entity filed a previous 13F-HR on August 8, 2025 disclosing 0 shares of Merck & Co., Inc..

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-12 2026-03-31 13F MERCK COM* 58933Y105 3,046 3,046 366 0.0015
2025-08-08 2025-06-30 13F MERCK COM 58933Y105 0 -932,832 -100.00 0 -100.00
2025-05-09 2025-03-31 13F MERCK COM 58933Y105 932,832 932,832 83,731 0.8026
2025-02-10 2024-12-31 13F MERCK COM 58933Y105 0 -261,729 -100.00 0 -100.00
2024-11-12 2024-09-30 13F MERCK COM 58933Y105 261,729 258,700 8,540.77 29,722 7,846.79 0.2605
2024-08-08 2024-06-30 13F MERCK COM 58933Y105 3,029 3,029 375 0.0035
2024-05-10 2024-03-31 13F MERCK COM 58933Y105 0 -2,264 -100.00 0 -100.00
2024-02-09 2023-12-31 13F MERCK COM 58933Y105 2,264 -726,538 -99.69 247 -99.67 0.0024
2023-11-09 2023-09-30 13F MERCK COM 58933Y105 728,802 725,854 24,621.91 75,030 22,032.74 0.8303
2023-08-10 2023-06-30 13F MERCK COM 58933Y105 2,948 -4,343 -59.57 340 -56.26 0.0037
2023-05-10 2023-03-31 13F MERCK COM 58933Y105 7,291 -359,818 -98.01 775 -98.10 0.0107
2023-02-10 2022-12-31 13F MERCK COM 58933Y105 367,109 -418,688 -53.28 40,727 -39.82 0.5957
2022-11-10 2022-09-30 13F MERCK COM 58933Y105 785,797 82,929 11.80 67,672 5.39 1.0460
2022-08-10 2022-06-30 13F MERCK COM 58933Y105 702,868 -131,452 -15.76 64,214 -6.20 0.9032
2022-05-11 2022-03-31 13F MERCK COM 58933Y105 834,320 -112,047 -11.84 68,456 -6.23 0.8121
2022-02-11 2021-12-31 13F MERCK COM 58933Y105 946,367 910,200 2,516.66 73,003 2,587.89 0.8011
2021-11-10 2021-09-30 13F MERCK COM 58933Y105 36,167 -286 -0.78 2,716 -4.20 0.0308
2021-08-10 2021-06-30 13F MERCK COM 58933Y105 36,453 -522,891 -93.48 2,835 6,493.02 0.0292
2021-05-12 2021-03-31 13F MERCK & CO. COM 58933Y105 559,344 103,269 22.64 43 16.22 0.4241
2021-02-10 2020-12-31 13F MERCK & CO. COM 58933Y105 456,075 272,944 149.04 37 146.67 0.3759
2020-11-10 2020-09-30 13F MERCK & CO. COM 58933Y105 183,131 54,241 42.08 15 -99.85 0.1599
2020-08-11 2020-06-30 13F MERCK & CO. COM 58933Y105 128,890 -27,229 -17.44 9,963 -17.08 0.3321
2020-05-12 2020-03-31 13F MERCK & CO. COM 58933Y105 156,119 -5,409 -3.35 12,015 -18.19 0.5200
2020-02-11 2019-12-31 13F MERCK COM 58933Y105 161,528 26,230 19.39 14,686 28.96 0.4531
2019-11-13 2019-09-30 13F MERCK COM 58933Y105 135,298 25,758 23.51 11,388 23.97 0.3724
2019-08-12 2019-06-30 13F MERCK COM 58933Y105 109,540 -1,305 -1.18 9,186 -0.33 0.2912
2019-05-13 2019-03-31 13F MERCK COM 58933Y105 110,845 15,259 15.96 9,216 26.09 0.2983
2019-02-11 2018-12-31 13F MERCK COM 58933Y105 95,586 -7,406 -7.19 7,309 0.05 0.2565
2018-11-09 2018-09-30 13F MERCK COM 58933Y105 102,992 1,686 1.66 7,305 18.80 0.2092
2018-08-13 2018-06-30 13F/A-1 MERCK COM 58933Y105 101,306 -9,547 -8.61 6,149 1.84 0.1799
2018-08-10 2018-06-30 13F MERCK COM 58933Y105 101,306 -9,547 6,149
2018-05-11 2018-03-31 13F MERCK COM 58933Y105 110,853 -30,602 -21.63 6,038 -24.15 0.1837
2018-02-12 2017-12-31 13F MERCK COM 58933Y105 141,455 0 0.00 7,960 -12.11 0.2291
2017-11-13 2017-09-30 13F MERCK COM 58933Y105 141,455 -2,722 -1.89 9,057 -1.98 0.3087
2017-08-11 2017-06-30 13F MERCK COM 58933Y105 144,177 -1,075 -0.74 9,240 0.12 0.3205
2017-05-11 2017-03-31 13F MERCK & CO INC COM 58933Y105 145,252 0 0.00 9,229 7.93 0.3371
2017-02-10 2016-12-31 13F MERCK COM 58933Y105 145,252 -4,139 -2.77 8,551 -8.28 0.3193
2016-11-14 2016-09-30 13F MERCK COM 58933Y105 149,391 -42 -0.03 9,323 8.29 0.3521
2016-08-10 2016-06-30 13F MERCK COM 58933Y105 149,433 -7,966 -5.06 8,609 3.37 0.3290
2016-05-11 2016-03-31 13F MERCK COM 58933Y105 157,399 -8,300 -5.01 8,328 -4.84 0.3165
2016-02-12 2015-12-31 13F MERCK COM 58933Y105 165,699 -12,428 -6.98 8,752 -0.52 0.3209
2015-11-12 2015-09-30 13F MERCK COM 58933Y105 178,127 -15,563 -8.04 8,798 -20.21 0.3439
2015-11-06 2015-06-30 13F/A-1 MERCK COM 58933Y105 193,690 -15,630 -7.47 11,027 -8.35 0.3869
2015-08-10 2015-06-30 13F MERCK COM 58933Y105 193,690 11,027
2015-05-14 2015-03-31 13F MERCK COM 58933Y105 209,320 -69,836 -25.02 12,032 -24.10 0.4193
2015-02-09 2014-12-31 13F MERCK COM 58933Y105 279,156 -3,000 -1.06 15,853 -5.22 0.5135
2014-11-07 2014-09-30 13F MERCK COM 58933Y105 282,156 -3,425 -1.20 16,726 1.25 0.5590
2014-08-11 2014-06-30 13F MERCK COM 58933Y105 285,581 -1,000 -0.35 16,521 1.54 0.5236
2014-04-03 2014-03-31 13F MERCK COM 58933Y105 286,581 -1,495 -0.52 16,269 12.84 0.5239
2014-01-07 2013-12-31 13F MERCK COM 58933Y105 288,076 -16,759 -5.50 14,418 -0.65 0.5597
2013-10-09 2013-09-30 13F MERCK COM 58933Y105 304,835 3,657 1.21 14,513 3.75 0.6386
2013-07-25 2013-06-30 13F MERCK COM 58933Y105 301,178 301,178 13,990 0.6247
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.