Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionWallace Capital Management Inc.
Latest Disclosed Ownership16,765 shares
Latest Disclosed Value $ 2,016,645
Wallace Capital Management Inc. reports 7.27% decrease in ownership of MRK / Merck & Co., Inc.

On May 15, 2026 - Wallace Capital Management Inc. filed a 13F-HR form disclosing ownership of 16,765 shares of Merck & Co., Inc. (MX:MRK) valued at $2,016,645 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 18,080 shares of Merck & Co., Inc.. This represents a change in shares of -7.27% 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 COM 58933Y105 16,765 -1,315 -7.27 2,017 5.94 0.2316
2026-02-17 2025-12-31 13F MERCK COM 58933Y105 18,080 301 1.69 1,903 27.55 0.2292
2025-11-14 2025-09-30 13F MERCK COM 58933Y105 17,779 -1,077 -5.71 1,492 0.00 0.1854
2025-08-14 2025-06-30 13F MERCK COM 58933Y105 18,856 -19 -0.10 1,493 -11.92 0.2034
2025-05-15 2025-03-31 13F MERCK COM 58933Y105 18,875 -45 -0.24 1,694 -9.99 0.2169
2025-02-14 2024-12-31 13F MERCK COM 58933Y105 18,920 -246 -1.28 1,882 -13.51 0.2572
2024-11-14 2024-09-30 13F MERCK COM 58933Y105 19,166 3 0.02 2,177 -8.26 0.2947
2024-08-16 2024-06-30 13F/A-1 MERCK COM 58933Y105 19,163 -362 -1.85 2,372 -7.92 0.3438
2024-08-14 2024-06-30 13F MERCK COM 58933Y105 19,163 -362 2,372 0.3425
2024-05-15 2024-03-31 13F MERCK COM 58933Y105 19,525 4 0.02 2,576 21.05 0.3514
2024-02-14 2023-12-31 13F MERCK COM 58933Y105 19,521 -264 -1.33 2,128 4.52 0.3165
2023-11-14 2023-09-30 13F MERCK COM 58933Y105 19,785 -554 -2.72 2,037 -13.21 0.3126
2023-08-14 2023-06-30 13F MERCK COM 58933Y105 20,339 -316 -1.53 2,347 6.78 0.3623
2023-05-15 2023-03-31 13F MERCK COM 58933Y105 20,655 3 0.01 2,198 -4.10 0.3602
2023-02-14 2022-12-31 13F MERCK COM 58933Y105 20,652 -98 -0.47 2,291 28.20 0.3590
2022-11-14 2022-09-30 13F MERCK COM 58933Y105 20,750 -621 -2.91 1,787 -9.01 0.2977
2022-08-12 2022-06-30 13F MERCK COM 58933Y105 21,371 -145 -0.67 1,964 4.14 0.2958
2022-05-16 2022-03-31 13F MERCK COM 58933Y105 21,516 4 0.02 1,886 14.37 0.2842
2022-02-14 2021-12-31 13F MERCK COM 58933Y105 21,512 -937 -4.17 1,649 -2.19 0.2311
2021-11-15 2021-09-30 13F MERCK COM 58933Y105 22,449 -1,591 -6.62 1,686 -9.84 0.2288
2021-08-16 2021-06-30 13F MERCK COM 58933Y105 24,040 5 0.02 1,870 1.47 0.2453
2021-05-17 2021-03-31 13F MERCK & CO. COM 58933Y105 24,035 4 0.02 1,843 -6.26 0.2416
2021-02-16 2020-12-31 13F MERCK & CO. COM 58933Y105 24,031 -136 -0.56 1,966 -1.95 0.2985
2020-11-16 2020-09-30 13F MERCK & CO. COM 58933Y105 24,167 -456 -1.85 2,005 5.30 0.3518
2020-08-14 2020-06-30 13F MERCK & CO. COM 58933Y105 24,623 184 0.75 1,904 1.28 0.3479
2020-05-14 2020-03-31 13F Merck COM 58933Y105 24,439 104 0.43 1,880 -15.05 0.3609
2020-02-14 2019-12-31 13F MERCK COM 58933Y105 24,335 -916 -3.63 2,213 4.09 0.3040
2019-11-14 2019-09-30 13F Merck COM 58933Y105 25,251 -646 -2.49 2,126 -2.07 0.2785
2019-08-12 2019-06-30 13F MERCK COM 58933Y105 25,897 23 0.09 2,171 0.88 0.2858
2019-05-14 2019-03-31 13F MERCK COM 58933Y105 25,874 -2,060 -7.37 2,152 0.84 0.2975
2019-02-14 2018-12-31 13F MERCK COM 58933Y105 27,934 -492 -1.73 2,134 5.80 0.3099
2018-11-13 2018-09-30 13F MERCK COM 58933Y105 28,426 -1,221 -4.12 2,017 12.06 0.2564
2018-08-28 2018-06-30 13F/A-1 MERCK COM 58933Y105 29,647 -596 -1.97 1,800 9.29 0.2396
2018-08-13 2018-06-30 13F MERCK COM 58933Y105 29,647 -596 1,800
2018-05-14 2018-03-31 13F MERCK COM 58933Y105 30,243 -145 -0.48 1,647 -3.68 0.2349
2018-02-14 2017-12-31 13F Merck COM 58933Y105 30,388 3 0.01 1,710 -12.13 0.2604
2017-11-13 2017-09-30 13F MERCK COM 58933Y105 30,385 -351 -1.14 1,946 -1.22 0.3119
2017-08-14 2017-06-30 13F MERCK COM 58933Y105 30,736 -681 -2.17 1,970 -1.30 0.3146
2017-05-15 2017-03-31 13F MERCK COM 58933Y105 31,417 4 0.01 1,996 7.89 0.3416
2017-02-14 2016-12-31 13F MERCK COM 58933Y105 31,413 689 2.24 1,850 -3.55 0.3354
2016-11-14 2016-09-30 13F Merck & Co Inc COM 58933Y105 30,724 -161 -0.52 1,918 7.81 0.3374
2016-08-15 2016-06-30 13F Merck & Co Inc COM 58933Y105 30,885 -121 -0.39 1,779 8.41 0.2947
2016-05-16 2016-03-31 13F Merck & Co Inc COM 58933Y105 31,006 4 0.01 1,641 0.18 0.2905
2016-02-16 2015-12-31 13F Merck & Co Inc COM 58933Y105 31,002 -289 -0.92 1,638 6.02 0.3112
2015-11-16 2015-09-30 13F Merck & Co Inc COM 58933Y105 31,291 5 0.02 1,545 -13.25 0.2830
2015-08-14 2015-06-30 13F Merck & Co Inc COM 58933Y105 31,286 -1,107 -3.42 1,781 -4.35 0.3107
2015-05-14 2015-03-31 13F Merck & Co Inc COM 58933Y105 32,393 -319 -0.98 1,862 0.22 0.3280
2015-02-17 2014-12-31 13F Merck & Co Inc COM 58933Y105 32,712 117 0.36 1,858 -3.83 0.3558
2014-11-14 2014-09-30 13F Merck & Co Inc COM 58933Y105 32,595 794 2.50 1,932 5.00 0.3974
2014-08-14 2014-06-30 13F Merck & Co Inc COM 58933Y105 31,801 -264 -0.82 1,840 1.10 0.3870
2014-05-15 2014-03-31 13F Merck & Co Inc COM 58933Y105 32,065 7 0.02 1,820 13.47 0.3979
2014-02-14 2013-12-31 13F Merck & Co Inc COM 58933Y105 32,058 7 0.02 1,604 5.11 0.3693
2013-11-14 2013-09-30 13F Merck & Co Inc COM 58933Y105 32,051 -168 -0.52 1,526 1.94 0.4182
2013-08-14 2013-06-30 13F Merck & Co Inc.. COM 58933Y105 32,219 32,219 1,497 0.4507
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.