Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionJackson Hole Capital Partners, LLC
Latest Disclosed Ownership62,790 shares
Latest Disclosed Value $ 7,553,025
Jackson Hole Capital Partners, LLC reports 0.09% decrease in ownership of MRK / Merck & Co., Inc.

On May 8, 2026 - Jackson Hole Capital Partners, LLC filed a 13F-HR form disclosing ownership of 62,790 shares of Merck & Co., Inc. (MX:MRK) valued at $7,553,025 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 62,846 shares of Merck & Co., Inc.. This represents a change in shares of -0.09% 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)
2026-05-08 2026-03-31 13F MERCK COM 58933Y105 62,790 -56 -0.09 7,553 14.18 1.2482
2026-01-30 2025-12-31 13F MERCK COM 58933Y105 62,846 117 0.19 6,615 25.66 1.1327
2025-10-28 2025-09-30 13F MERCK COM 58933Y105 62,729 6,756 12.07 5,265 18.83 0.9004
2025-07-31 2025-06-30 13F MERCK COM 58933Y105 55,973 3,100 5.86 4,431 -6.64 0.8123
2025-05-06 2025-03-31 13F MERCK COM 58933Y105 52,873 2,111 4.16 4,746 -6.02 0.9420
2025-02-07 2024-12-31 13F MERCK COM 58933Y105 50,762 51 0.10 5,050 -12.31 1.0200
2024-10-30 2024-09-30 13F MERCK COM 58933Y105 50,711 -1,880 -3.57 5,759 -11.55 1.2010
2024-08-13 2024-06-30 13F MERCK COM 58933Y105 52,591 2,002 3.96 6,511 -2.47 1.4136
2024-05-09 2024-03-31 13F MERCK COM 58933Y105 50,589 951 1.92 6,675 23.36 1.5052
2024-02-02 2023-12-31 13F MERCK COM 58933Y105 49,638 1,343 2.78 5,411 8.83 1.3764
2023-11-09 2023-09-30 13F MERCK COM 58933Y105 48,295 -3,794 -7.28 4,972 -17.27 1.4545
2023-08-14 2023-06-30 13F MERCK COM 58933Y105 52,089 -2,277 -4.19 6,011 4.41 1.6447
2023-05-15 2023-03-31 13F MERCK COM 58933Y105 54,366 822 1.54 5,757 -3.10 1.5104
2023-02-10 2022-12-31 13F MERCK COM 58933Y105 53,544 -384 -0.71 5,941 27.91 1.7744
2022-11-10 2022-09-30 13F MERCK COM 58933Y105 53,928 745 1.40 4,644 -4.23 1.4287
2022-07-27 2022-06-30 13F MERCK COM 58933Y105 53,183 -267 -0.50 4,849 10.56 1.5155
2022-05-09 2022-03-31 13F MERCK COM 58933Y105 53,450 6,341 13.46 4,386 21.50 1.2629
2022-02-02 2021-12-31 13F MERCK COM 58933Y105 47,109 -325 -0.69 3,610 1.32 1.1282
2021-11-09 2021-09-30 13F MERCK COM 58933Y105 47,434 1,262 2.73 3,563 -0.78 1.1579
2021-07-28 2021-06-30 13F MERCK COM 58933Y105 46,172 41,077 806.22 3,591 813.74 1.2432
2021-05-07 2021-03-31 13F MERCK & CO. COM 58933Y105 5,095 -460 -8.28 393 -13.44 0.1618
2021-02-05 2020-12-31 13F MERCK & CO. COM 58933Y105 5,555 0 0.00 454 -1.52 0.2068
2020-11-03 2020-09-30 13F MERCK & CO. COM 58933Y105 5,555 0 0.00 461 7.21 0.2425
2020-08-11 2020-06-30 13F MERCK COM 58933Y105 5,555 -119 -2.10 430 -1.60 0.2615
2020-05-04 2020-03-31 13F MERCK & CO. COM 58933Y105 5,674 0 0.00 437 -15.31 0.3256
2020-02-10 2019-12-31 13F MERCK COM 58933Y105 5,674 0 0.00 516 7.95 0.2831
2019-11-07 2019-09-30 13F MERCK COM 58933Y105 5,674 0 0.00 478 0.42 0.2697
2019-08-13 2019-06-30 13F MERCK COM 58933Y105 5,674 673 13.46 476 14.42 0.2955
2019-05-14 2019-03-31 13F MERCK COM 58933Y105 5,001 -50 -0.99 416 7.77 0.3675
2019-03-15 2018-12-31 13F/A-1 MERCK COM 58933Y105 5,051 5,051 386 0.4066
2019-02-11 2018-12-31 13F MERCK COM 58933Y105 5,051 5,051 386 0.4019
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.