Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionKempen Capital Management N.v.
Latest Disclosed Ownership522,959 shares
Latest Disclosed Value $ 62,906,738
Kempen Capital Management N.v. reports 0.32% decrease in ownership of MRK / Merck & Co., Inc.

On May 15, 2026 - Kempen Capital Management N.v. filed a 13F-HR form disclosing ownership of 522,959 shares of Merck & Co., Inc. (MX:MRK) valued at $62,906,738 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 524,615 shares of Merck & Co., Inc.. This represents a change in shares of -0.32% during the quarter.

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)
2026-05-15 2026-03-31 13F MERCK & CO INC COM COM 58933Y105 522,959 -1,656 -0.32 62,907 13.92 0.5517
2026-02-13 2025-12-31 13F MERCK & CO INC COM COM 58933Y105 524,615 -82,120 -13.53 55,221 8.44 0.4730
2025-11-14 2025-09-30 13F MERCK & CO INC COM COM 58933Y105 606,735 27,831 4.81 50,923 11.12 0.4545
2025-08-07 2025-06-30 13F MERCK & CO INC COM COM 58933Y105 578,904 75,696 15.04 45,826 1.46 0.4366
2025-05-14 2025-03-31 13F MERCK & CO INC COM COM 58933Y105 503,208 -1,292,388 -71.98 45,168 -74.71 0.4717
2025-02-13 2024-12-31 13F MERCK & CO INC COM COM 58933Y105 1,795,596 -4,954 -0.28 178,626 -12.64 1.7764
2024-11-14 2024-09-30 13F MERCK & CO INC COM COM 58933Y105 1,800,550 227 0.01 204,470 -8.26 2.0849
2024-07-24 2024-06-30 13F MERCK & CO INC COM COM 58933Y105 1,800,323 64,561 3.72 222,880 -2.69 2.4950
2024-05-14 2024-03-31 13F MERCK & CO INC COM COM 58933Y105 1,735,762 7,245 0.42 229,034 21.54 2.8496
2024-02-14 2023-12-31 13F MERCK & CO INC COM COM 58933Y105 1,728,517 248,027 16.75 188,443 23.64 2.6303
2023-11-14 2023-09-30 13F MERCK & CO INC COM COM 58933Y105 1,480,490 196,007 15.26 152,416 2.83 2.8186
2023-08-14 2023-06-30 13F MERCK & CO INC COM COM 58933Y105 1,284,483 9,226 0.72 148,216 9.24 2.6703
2023-05-12 2023-03-31 13F MERCK & CO INC COM COM 58933Y105 1,275,257 955,546 298.88 135,675 282.49 2.5815
2023-02-14 2022-12-31 13F MERCK & CO INC COM COM 58933Y105 319,711 59,872 23.04 35,472 58.51 1.0334
2022-11-14 2022-09-30 13F MERCK & CO INC COM COM 58933Y105 259,839 -46,426 -15.16 22,378 -19.86 0.9004
2022-08-15 2022-06-30 13F MERCK & CO INC COM COM 58933Y105 306,265 -70,050 -18.61 27,922 -9.57 1.0026
2022-05-13 2022-03-31 13F MERCK & CO INC COM COM 58933Y105 376,315 -9,540 -2.47 30,876 4.41 0.9426
2022-02-11 2021-12-31 13F MERCK & CO INC COM COM 58933Y105 385,855 31,281 8.82 29,572 11.04 0.9151
2021-11-15 2021-09-30 13F MERCK & CO INC COM COM 58933Y105 354,574 4,515 1.29 26,632 -2.17 0.9567
2021-08-13 2021-06-30 13F MERCK & CO INC COM COM 58933Y105 350,059 13,682 4.07 27,224 4.99 0.9713
2021-05-14 2021-03-31 13F MERCK & CO. INC COM COM 58933Y105 336,377 168,054 99.84 25,931 88.32 1.1883
2021-02-12 2020-12-31 13F MERCK & CO. INC COM COM 58933Y105 168,323 23,084 15.89 13,770 14.29 0.7974
2020-11-10 2020-09-30 13F MERCK & CO. INC COM COM 58933Y105 145,239 -110,583 -43.23 12,048 -39.10 0.9151
2020-08-14 2020-06-30 13F MERCK & CO. INC COM COM 58933Y105 255,822 2,208 0.87 19,783 1.38 1.4457
2020-05-15 2020-03-31 13F MERCK & CO. INC COM COM 58933Y105 253,614 223,726 748.55 19,514 617.95 1.6240
2020-02-14 2019-12-31 13F MERCK & CO INC COM COM 58933Y105 29,888 20,258 210.36 2,718 235.14 0.1703
2019-11-14 2019-09-30 13F MERCK & CO INC COM COM 58933Y105 9,630 -813 -7.79 811 -7.42 0.0645
2019-08-14 2019-06-30 13F MERCK & CO INC COM COM 58933Y105 10,443 -5,940 -36.26 876 -35.73 0.0761
2019-05-15 2019-03-31 13F MERCK & CO INC COM COM 58933Y105 16,383 16,383 1,363 0.1238
2018-11-14 2018-09-30 13F MERCK & CO INC COM COM 58933Y105 0 -366,100 -100.00 0 -100.00
2018-08-14 2018-06-30 13F MERCK & CO INC COM COM 58933Y105 366,100 -97,458 -21.02 22,222 -11.99 1.6594
2018-05-23 2018-03-31 13F/A-1 MERCK & CO INC COM COM 58933Y105 463,558 -19,577 -4.05 25,250 -7.12 2.0255
2018-05-15 2018-03-31 13F MERCK & CO INC COM COM 58933Y105 463,558 -19,577 25,250
2018-02-14 2017-12-31 13F MERCK & CO INC COM COM 58933Y105 483,135 437,740 964.29 27,186 835.19 2.1512
2017-11-14 2017-09-30 13F MERCK & CO INC COM COM 58933Y105 45,395 1,186 2.68 2,907 2.61 0.2246
2017-08-11 2017-06-30 13F MERCK & CO INC COM COM 58933Y105 44,209 0 0.00 2,833 0.85 0.2671
2017-05-11 2017-03-31 13F MERCK & CO INC COM COM 58933Y105 44,209 16,659 60.47 2,809 73.18 0.3241
2017-02-13 2016-12-31 13F MERCK & CO INC COM COM 58933Y105 27,550 -1,700 -5.81 1,622 -11.12 0.2028
2016-11-10 2016-09-30 13F MERCK & CO INC COM COM 58933Y105 29,250 -336,730 -92.01 1,825 -91.34 0.2364
2016-08-12 2016-06-30 13F MERCK & CO INC COM COM 58933Y105 365,980 -66,970 -15.47 21,084 -7.96 2.4806
2016-05-12 2016-03-31 13F MERCK & CO INC NEW COM COM 58933Y105 432,950 -10,050 -2.27 22,907 -2.10 2.6069
2016-02-12 2015-12-31 13F MERCK & CO INC NEW COM COM 58933Y105 443,000 443,000 0.00 23,399 2.6908
2015-05-15 2015-03-31 13F MERCK & CO INC NEW COM COM 58933Y105 0 -18,400 -100.00 0 -100.00
2015-02-17 2014-12-31 13F MERCK & CO INC NEW COM COM 58933Y105 18,400 -3,400 -15.60 1,045 -19.12 0.1149
2014-11-13 2014-09-30 13F MERCK & CO INC NEW COM COM 58933Y105 21,800 -575,350 -96.35 1,292 -96.26 0.1347
2014-08-07 2014-06-30 13F MERCK & CO INC NEW COM COM 58933Y105 597,150 -143,850 -19.41 34,545 -17.88 3.3459
2014-08-05 2014-03-31 13F/A-1 MERCK & CO INC NEW COM COM 58933Y105 741,000 -226,560 -23.42 42,066 -14.77 4.0015
2014-05-12 2014-03-31 13F MERCK & CO INC NEW COM COM 58933Y105 741,000 42,066
2014-08-05 2013-12-31 13F/A-1 MERCK & CO INC NEW COM COM 58933Y105 967,560 967,560 49,357 4.1289
2014-02-13 2013-12-31 13F MERCK & CO INC NEW COM COM 58933Y105 967,560 49,357 4.1613
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.