默克公司
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionFirestone Capital Management
Latest Disclosed Ownership2,739 shares
Latest Disclosed Value $ 329,474
Firestone Capital Management reports 0.15% decrease in ownership of MRK / Merck & Co., Inc.

On May 8, 2026 - Firestone Capital Management filed a 13F-HR form disclosing ownership of 2,739 shares of Merck & Co., Inc. (MX:MRK) valued at $329,474 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 2,743 shares of Merck & Co., Inc.. This represents a change in shares of -0.15% 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 2,739 -4 -0.15 329 14.24 0.0686
2026-02-09 2025-12-31 13F MERCK COM 58933Y105 2,743 0 0.00 289 25.22 0.0613
2025-11-05 2025-09-30 13F MERCK COM 58933Y105 2,743 -97 -3.42 230 2.68 0.0498
2025-08-08 2025-06-30 13F MERCK COM 58933Y105 2,840 22 0.78 225 -11.11 0.0529
2025-05-02 2025-03-31 13F MERCK COM 58933Y105 2,818 -1,170 -29.34 253 -36.36 0.0663
2025-02-14 2024-12-31 13F MERCK COM 58933Y105 3,988 0 0.00 397 -12.39 0.0986
2024-11-14 2024-09-30 13F MERCK COM 58933Y105 3,988 -116 -2.83 453 -11.02 0.1136
2024-08-09 2024-06-30 13F MERCK COM 58933Y105 4,104 -62 -1.49 508 -7.47 0.1387
2024-05-07 2024-03-31 13F MERCK COM 58933Y105 4,166 0 0.00 550 20.93 0.1530
2024-02-05 2023-12-31 13F MERCK COM 58933Y105 4,166 0 0.00 454 6.07 0.1399
2023-11-07 2023-09-30 13F MERCK COM 58933Y105 4,166 0 0.00 429 -2.51 0.1467
2023-07-26 2023-06-30 13F MERCK COM 58933Y105 4,166 -43 -1.02 440 -1.79 0.1431
2023-05-11 2023-03-31 13F MERCK COM 58933Y105 4,209 -143 -3.29 448 -7.26 0.1611
2023-02-09 2022-12-31 13F MERCK COM 58933Y105 4,352 0 0.00 483 28.53 0.1794
2022-11-10 2022-09-30 13F MERCK COM 58933Y105 4,352 0 0.00 375 -5.54 0.1525
2022-08-05 2022-06-30 13F MERCK COM 58933Y105 4,352 43 1.00 397 12.15 0.1544
2022-05-03 2022-03-31 13F MERCK COM 58933Y105 4,309 0 0.00 354 7.27 0.1160
2022-02-11 2021-12-31 13F MERCK COM 58933Y105 4,309 116 2.77 330 1.23 0.1041
2021-11-12 2021-09-30 13F MERCK COM 58933Y105 4,193 0 0.00 326 0.00 0.1079
2021-08-04 2021-06-30 13F MERCK COM 58933Y105 4,193 0 0.00 326 0.93 0.1177
2021-04-28 2021-03-31 13F MERCK & CO. COM 58933Y105 4,193 -300 -6.68 323 -12.23 0.1148
2021-02-10 2020-12-31 13F MERCK & CO. COM 58933Y105 4,493 100 2.28 368 1.10 0.1398
2020-10-26 2020-09-30 13F MERCK & CO. COM 58933Y105 4,393 0 0.00 364 7.06 0.1629
2020-07-27 2020-06-30 13F MERCK & CO. COM 58933Y105 4,393 100 2.33 340 3.03 0.1577
2020-04-20 2020-03-31 13F MERCK & CO. COM 58933Y105 4,293 -42 -0.97 330 -16.24 0.1716
2020-02-13 2019-12-31 13F/A-1 MERCK COM 58933Y105 4,335 4,335 394 0.1681
2020-02-10 2019-12-31 13F MERCK COM 58933Y105 88 394
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.