Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionCLARET ASSET MANAGEMENT Corp
Latest Disclosed Ownership114,010 shares
Latest Disclosed Value $ 13,714
CLARET ASSET MANAGEMENT Corp reports 0.93% increase in ownership of MRK / Merck & Co., Inc.

On May 11, 2026 - CLARET ASSET MANAGEMENT Corp filed a 13F-HR form disclosing ownership of 114,010 shares of Merck & Co., Inc. (MX:MRK) valued at $13,714 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 112,955 shares of Merck & Co., Inc.. This represents a change in shares of 0.93% 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)
2026-05-11 2026-03-31 13F MERCK COM 58933Y105 114,010 1,055 0.93 14 18.18 1.6381
2026-02-11 2025-12-31 13F MERCK COM 58933Y105 112,955 -506 -0.45 12 22.22 1.3798
2025-11-13 2025-09-30 13F MERCK COM 58933Y105 113,461 61,285 117.46 10 125.00 1.1345
2025-08-13 2025-06-30 13F MERCK COM 58933Y105 52,176 4 0.5347
2025-05-13 2025-03-31 13F MERCK COM 58933Y105 1 0.1013
2025-02-13 2024-12-31 13F MERCK COM 58933Y105 7,843 -187 -2.33 1 0.1232
2024-11-14 2024-09-30 13F MERCK COM 58933Y105 8,030 -15 -0.19 1 0.1493
2024-08-14 2024-06-30 13F MERCK COM 58933Y105 8,045 207 2.64 1 -100.00 0.1772
2024-04-29 2024-03-31 13F MERCK COM 58933Y105 7,838 0 0.00 1 0.1737
2024-02-12 2023-12-31 13F MERCK COM 58933Y105 7,838 -25 -0.32 1 0.1527
2023-11-13 2023-09-30 13F MERCK COM 58933Y105 7,863 15 0.19 1 0.1588
2023-08-09 2023-06-30 13F MERCK COM 58933Y105 7,848 75 0.96 1 0.1767
2023-04-18 2023-03-31 13F MERCK COM 58933Y105 7,773 -100 -1.27 1 0.1632
2023-02-07 2022-12-31 13F MERCK COM 58933Y105 7,873 0 0.00 1 -100.00 0.1930
2022-11-14 2022-09-30 13F MERCK COM 58933Y105 7,873 -20 -0.25 678 -5.83 0.1608
2022-07-28 2022-06-30 13F MERCK COM 58933Y105 7,893 14 0.18 720 11.46 0.1553
2022-04-04 2022-03-31 13F MERCK & CO INC COM COM 58933Y105 7,879 -10 -0.13 646 6.78 0.1242
2022-02-07 2021-12-31 13F MERCK & CO INC COM COM 58933Y105 7,889 -36 -0.45 605 1.68 0.1119
2021-12-02 2021-09-30 13F MERCK & CO INC COM COM 58933Y105 7,925 20 0.25 595 -3.25 0.1020
2021-08-09 2021-06-30 13F MERCK & CO INC COM COM 58933Y105 7,905 -162 -2.01 615 -1.13 0.1008
2021-05-04 2021-03-31 13F MERCK & CO INC COM COM 58933Y105 8,067 -183 -2.22 622 -7.85 0.1154
2021-02-02 2020-12-31 13F MERCK & CO INC COM COM 58933Y105 8,250 -80 -0.96 675 -2.32 0.1332
2020-10-29 2020-09-30 13F MERCK & CO INC COM COM 58933Y105 8,330 -390 -4.47 691 2.52 0.1539
2020-08-06 2020-06-30 13F MERCK & CO INC COM COM 58933Y105 8,720 -419 -4.58 674 -4.13 0.1596
2020-04-06 2020-03-31 13F MERCK & CO INC COM COM 58933Y105 9,139 -2 -0.02 703 -15.40 0.1983
2020-01-07 2019-12-31 13F MERCK & CO INC COM COM 58933Y105 9,141 -58 -0.63 831 7.36 0.1595
2019-10-11 2019-09-30 13F MERCK & CO INC COM COM 58933Y105 9,199 0 0.00 774 0.39 0.1591
2019-07-24 2019-06-30 13F MERCK & CO INC COM COM 58933Y105 9,199 0 0.00 771 0.78 0.1596
2019-04-29 2019-03-31 13F MERCK & CO INC COM COM 58933Y105 9,199 -32 -0.35 765 8.51 0.1521
2019-02-07 2018-12-31 13F MERCK & CO INC COM COM 58933Y105 9,231 5 0.05 705 7.80 0.1566
2018-10-30 2018-09-30 13F MERCK & CO INC COM COM 58933Y105 9,226 -30 -0.32 654 16.37 0.1260
2018-08-13 2018-06-30 13F MERCK & CO INC COM COM 58933Y105 9,256 0 0.00 562 11.51 0.1146
2018-05-08 2018-03-31 13F MERCK & CO INC COM COM 58933Y105 9,256 0 0.00 504 -3.26 0.1146
2018-03-27 2017-12-31 13F MERCK COM 58933Y105 9,256 9,256 521 0.1136
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.