Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionAccredited Investors Inc.
Latest Disclosed Ownership10,941 shares
Latest Disclosed Value $ 1,316,123
Accredited Investors Inc. reports 7.31% decrease in ownership of MRK / Merck & Co., Inc.

On April 30, 2026 - Accredited Investors Inc. filed a 13F-HR form disclosing ownership of 10,941 shares of Merck & Co., Inc. (MX:MRK) valued at $1,316,123 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 11,804 shares of Merck & Co., Inc.. This represents a change in shares of -7.31% 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)
2026-04-30 2026-03-31 13F MERCK COM 58933Y105 10,941 -863 -7.31 1,316 5.96 0.0709
2026-02-05 2025-12-31 13F MERCK COM 58933Y105 11,804 1,946 19.74 1,243 50.18 0.0660
2025-10-30 2025-09-30 13F MERCK COM 58933Y105 9,858 19 0.19 827 6.30 0.0462
2025-08-08 2025-06-30 13F MERCK COM 58933Y105 9,839 -972 -8.99 779 -19.79 0.0461
2025-05-06 2025-03-31 13F MERCK COM 58933Y105 10,811 -958 -8.14 970 -17.09 0.0603
2025-02-13 2024-12-31 13F MERCK COM 58933Y105 11,769 -65 -0.55 1,171 -12.88 0.0686
2024-11-06 2024-09-30 13F/A-1 MERCK COM 58933Y105 11,834 109 0.93 1,344 -7.44 0.0769
2024-11-05 2024-09-30 13F MERCK COM 58933Y105 2,589 -9,136 270 0.0154
2024-07-19 2024-06-30 13F MERCK COM 58933Y105 11,725 -1 -0.01 1,452 -6.21 0.0905
2024-05-14 2024-03-31 13F MERCK COM 58933Y105 11,726 271 2.37 1,547 23.96 0.0994
2024-02-07 2023-12-31 13F MERCK COM 58933Y105 11,455 16 0.14 1,249 6.03 0.0885
2023-11-07 2023-09-30 13F MERCK COM 58933Y105 11,439 50 0.44 1,178 -10.43 0.0883
2023-08-03 2023-06-30 13F MERCK COM 58933Y105 11,389 -708 -5.85 1,314 2.10 0.0936
2023-04-24 2023-03-31 13F MERCK COM 58933Y105 12,097 -248 -2.01 1,287 -5.99 0.0977
2023-02-07 2022-12-31 13F MERCK COM 58933Y105 12,345 324 2.70 1,370 32.27 0.1158
2022-11-08 2022-09-30 13F MERCK COM 58933Y105 12,021 627 5.50 1,035 -0.38 0.1201
2022-07-21 2022-06-30 13F MERCK COM 58933Y105 11,394 -112 -0.97 1,039 10.06 0.1232
2022-05-06 2022-03-31 13F MERCK COM 58933Y105 11,506 82 0.72 944 7.76 0.0850
2022-01-31 2021-12-31 13F MERCK COM 58933Y105 11,424 -1,163 -9.24 876 -7.30 0.0781
2021-11-12 2021-09-30 13F MERCK COM 58933Y105 12,587 7 0.06 945 -3.37 0.1021
2021-07-30 2021-06-30 13F MERCK COM 58933Y105 12,580 -37 -0.29 978 0.51 0.1000
2021-04-16 2021-03-31 13F MERCK & CO. COM 58933Y105 12,617 43 0.34 973 -5.44 0.1303
2021-02-11 2020-12-31 13F MERCK & CO. COM 58933Y105 12,574 254 2.06 1,029 0.68 0.1723
2020-11-05 2020-09-30 13F MERCK & CO. COM 58933Y105 12,320 12 0.10 1,022 7.35 0.2141
2020-07-29 2020-06-30 13F MERCK & CO. COM 58933Y105 12,308 27 0.22 952 0.74 0.1938
2020-05-15 2020-03-31 13F MERCK & CO. COM 58933Y105 12,281 -94 -0.76 945 -16.07 0.2224
2020-01-23 2019-12-31 13F MERCK COM 58933Y105 12,375 699 5.99 1,126 14.55 0.1912
2019-11-14 2019-09-30 13F MERCK COM 58933Y105 11,676 -300 -2.51 983 -2.09 0.1893
2019-08-13 2019-06-30 13F MERCK COM 58933Y105 11,976 0 0.00 1,004 0.80 0.1964
2019-04-17 2019-03-31 13F MERCK COM 58933Y105 11,976 25 0.21 996 9.09 0.2005
2019-02-12 2018-12-31 13F MERCK COM 58933Y105 11,951 1,923 19.18 913 28.41 0.2040
2018-10-23 2018-09-30 13F MERCK COM 58933Y105 10,028 -28 -0.28 711 16.56 0.1757
2018-07-31 2018-06-30 13F MERCK COM 58933Y105 10,056 118 1.19 610 12.75 0.1578
2018-04-18 2018-03-31 13F MERCK COM 58933Y105 9,938 302 3.13 541 -0.18 0.1478
2018-01-17 2017-12-31 13F MERCK COM 58933Y105 9,636 126 1.32 542 -11.00 0.1499
2017-10-30 2017-09-30 13F MERCK COM 58933Y105 9,510 1,135 13.55 609 13.41 0.1681
2017-08-02 2017-06-30 13F MERCK COM 58933Y105 8,375 -1,786 -17.58 537 -16.87 0.1389
2017-05-10 2017-03-31 13F MERCK COM 58933Y105 10,161 209 2.10 646 10.24 0.1609
2017-02-08 2016-12-31 13F MERCK COM 58933Y105 9,952 15 0.15 586 -5.48 0.1517
2016-11-03 2016-09-30 13F MERCK COM 58933Y105 9,937 -215 -2.12 620 8.77 0.1703
2016-08-08 2016-06-30 13F MERCK NEW COM 58933Y105 10,152 1,027 11.25 570 18.01 0.1571
2016-05-12 2016-03-31 13F MERCK NEW COM 58933Y105 9,125 23 0.25 483 0.42 0.1234
2016-01-19 2015-12-31 13F MERCK NEW COM 58933Y105 9,102 22 0.24 481 7.13 0.1183
2015-10-28 2015-09-30 13F/A-1 MERCK NEW COM 58933Y105 9,080 2,458 37.12 449 18.78 0.1207
2015-10-26 2015-09-30 13F MERCK NEW COM 58933Y105 9,080 449
2015-08-11 2015-06-30 13F MERCK NEW COM 58933Y105 6,622 300 4.75 378 3.85 0.0993
2015-04-08 2015-03-31 13F MERCK NEW COM 58933Y105 6,322 0 0.00 364 1.11 0.0926
2015-02-09 2014-12-31 13F MERCK NEW COM 58933Y105 6,322 -33 -0.52 360 -4.00 0.1065
2014-10-20 2014-09-30 13F MERCK NEW COM 58933Y105 6,355 33 0.52 375 2.46 0.1133
2014-07-29 2014-06-30 13F MERCK NEW COM 58933Y105 6,322 0 0.00 366 1.95 0.1190
2014-05-07 2014-03-31 13F MERCK NEW COM 58933Y105 6,322 2,202 53.45 359 73.43 0.1199
2014-02-04 2013-12-31 13F MERCK NEW COM 58933Y105 4,120 -959 -18.88 207 -14.46 0.0724
2013-10-30 2013-09-30 13F MERCK NEW COM 58933Y105 5,079 -211 -3.99 242 -1.63 0.0893
2013-07-18 2013-06-30 13F MERCK NEW COM 58933Y105 5,290 5,290 246 0.0971
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.