Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionGables Capital Management Inc.
Latest Disclosed Ownership16,352 shares
Latest Disclosed Value $ 1,966,984
Gables Capital Management Inc. reports 3.25% decrease in ownership of MRK / Merck & Co., Inc.

On May 1, 2026 - Gables Capital Management Inc. filed a 13F-HR form disclosing ownership of 16,352 shares of Merck & Co., Inc. (MX:MRK) valued at $1,966,984 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 16,902 shares of Merck & Co., Inc.. This represents a change in shares of -3.25% 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)
2026-05-01 2026-03-31 13F MERCK COM 58933Y105 16,352 -550 -3.25 1,967 10.51 0.8335
2026-02-06 2025-12-31 13F MERCK COM 58933Y105 16,902 -400 -2.31 1,779 22.52 0.7516
2025-11-06 2025-09-30 13F MERCK COM 58933Y105 17,302 275 1.62 1,452 7.80 0.6223
2025-07-30 2025-06-30 13F MERCK COM 58933Y105 17,027 -1,850 -9.80 1,348 -20.48 0.6371
2025-05-08 2025-03-31 13F MERCK COM 58933Y105 18,877 875 4.86 1,694 -5.36 0.8376
2025-02-07 2024-12-31 13F MERCK COM 58933Y105 18,002 450 2.56 1,791 -10.19 0.8641
2024-10-25 2024-09-30 13F MERCK COM 58933Y105 17,552 1,715 10.83 1,993 1.68 1.0059
2024-08-08 2024-06-30 13F MERCK COM 58933Y105 15,837 -150 -0.94 1,961 -7.06 1.0252
2024-05-06 2024-03-31 13F MERCK COM 58933Y105 15,987 -100 -0.62 2,109 20.31 1.1621
2024-02-08 2023-12-31 13F MERCK COM 58933Y105 16,087 -95 -0.59 1,754 5.29 1.0897
2023-11-03 2023-09-30 13F MERCK COM 58933Y105 16,182 -16 -0.10 1,666 -10.91 1.1593
2023-08-03 2023-06-30 13F MERCK COM 58933Y105 16,198 135 0.84 1,869 9.43 1.2234
2023-05-04 2023-03-31 13F MERCK COM 58933Y105 16,063 43 0.27 1,709 -3.88 1.1936
2023-02-06 2022-12-31 13F MERCK COM 58933Y105 16,020 -35 -0.22 1,777 28.49 1.2932
2022-11-01 2022-09-30 13F MERCK COM 58933Y105 16,055 0 0.00 1,383 -5.53 1.1091
2022-07-18 2022-06-30 13F MERCK COM 58933Y105 16,055 150 0.94 1,464 12.18 1.1054
2022-05-02 2022-03-31 13F MERCK COM 58933Y105 15,905 0 0.00 1,305 7.05 0.8187
2022-02-09 2021-12-31 13F MERCK COM 58933Y105 15,905 0 0.00 1,219 2.01 0.7261
2021-11-12 2021-09-30 13F MERCK COM 58933Y105 15,905 -80 -0.50 1,195 -3.86 0.7799
2021-08-03 2021-06-30 13F MERCK COM 58933Y105 15,985 -10,856 -40.45 1,243 -39.92 0.8513
2021-05-12 2021-03-31 13F MERCK & CO. COM 58933Y105 26,841 -1,200 -4.28 2,069 -9.81 1.1333
2021-02-03 2020-12-31 13F MERCK & CO. COM 58933Y105 28,041 -500 -1.75 2,294 -3.08 1.3392
2020-11-12 2020-09-30 13F MERCK & CO. COM 58933Y105 28,541 -119 -0.42 2,367 6.81 1.5278
2020-07-30 2020-06-30 13F MERCK & CO. COM 58933Y105 28,660 610 2.17 2,216 2.78 1.5354
2020-05-07 2020-03-31 13F MERCK & CO. COM 58933Y105 28,050 815 2.99 2,156 -12.89 1.7710
2020-02-10 2019-12-31 13F MERCK COM 58933Y105 27,235 -1,365 -4.77 2,475 2.83 1.6583
2019-10-30 2019-09-30 13F MERCK COM 58933Y105 28,600 2,850 11.07 2,407 11.64 1.7033
2019-07-31 2019-06-30 13F MERCK COM 58933Y105 25,750 1,230 5.02 2,156 5.74 1.7587
2019-04-30 2019-03-31 13F MERCK COM 58933Y105 24,520 385 1.60 2,039 10.57 1.6402
2019-02-08 2018-12-31 13F MERCK COM 58933Y105 24,135 -750 -3.01 1,844 4.48 1.6063
2018-11-05 2018-09-30 13F MERCK COM 58933Y105 24,885 65 0.26 1,765 18.22 1.3438
2018-08-10 2018-06-30 13F/A-1 MERCK COM 58933Y105 24,820 655 2.71 1,493 13.45 1.2208
2018-08-03 2018-06-30 13F MERCK COM 58933Y105 24,820 655 1,493 1.2273
2018-05-17 2018-03-31 13F MERCK COM 58933Y105 24,165 24,165 1,316 1.1640
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.