Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionFinancial Sense Advisors, Inc.
Latest Disclosed Ownership49,854 shares
Latest Disclosed Value $ 5,996,922
Financial Sense Advisors, Inc. reports 19.30% decrease in ownership of MRK / Merck & Co., Inc.

On May 14, 2026 - Financial Sense Advisors, Inc. filed a 13F-HR form disclosing ownership of 49,854 shares of Merck & Co., Inc. (MX:MRK) valued at $5,996,922 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 61,776 shares of Merck & Co., Inc.. This represents a change in shares of -19.30% 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)
2026-05-14 2026-03-31 13F MERCK COM 58933Y105 49,854 -11,922 -19.30 5,997 -7.78 1.2171
2026-02-13 2025-12-31 13F MERCK COM 58933Y105 61,776 13,799 28.76 6,503 61.50 1.1880
2025-11-14 2025-09-30 13F MERCK COM 58933Y105 47,977 44,477 1,270.77 4,027 1,353.43 0.6863
2025-08-05 2025-06-30 13F MERCK COM 58933Y105 3,500 3,500 277 0.0653
2025-05-06 2025-03-31 13F MERCK COM 58933Y105 0 -13,859 -100.00 0 -100.00
2025-02-03 2024-12-31 13F MERCK COM 58933Y105 13,859 -986 -6.64 1,379 -18.22 0.4556
2024-11-01 2024-09-30 13F MERCK COM 58933Y105 14,845 1,195 8.75 1,686 -0.24 0.4577
2024-07-24 2024-06-30 13F MERCK COM 58933Y105 13,650 1,299 10.52 1,690 3.68 0.5161
2024-04-19 2024-03-31 13F MERCK COM 58933Y105 12,351 -507 -3.94 1,630 16.27 0.5380
2024-01-12 2023-12-31 13F MERCK COM 58933Y105 12,858 -133 -1.02 1,402 4.79 0.5202
2023-11-07 2023-09-30 13F MERCK COM 58933Y105 12,991 -6,903 -34.70 1,337 -41.74 0.5681
2023-08-03 2023-06-30 13F MERCK COM 58933Y105 19,894 -1,648 -7.65 2,296 0.17 0.9668
2023-04-25 2023-03-31 13F MERCK COM 58933Y105 21,542 -1,416 -6.17 2,292 -10.05 1.0123
2023-02-07 2022-12-31 13F MERCK COM 58933Y105 22,958 2,456 11.98 2,547 44.22 1.0420
2022-10-13 2022-09-30 13F MERCK COM 58933Y105 20,502 -77 -0.37 1,766 -5.86 0.7462
2022-07-18 2022-06-30 13F MERCK COM 58933Y105 20,579 20,579 1,876 0.6859
2022-05-05 2022-03-31 13F MERCK COM 58933Y105 0 -19,533 -100.00 0 -100.00
2022-01-31 2021-12-31 13F MERCK COM 58933Y105 19,533 2,182 12.58 1,497 14.89 0.5140
2021-11-03 2021-09-30 13F MERCK COM 58933Y105 17,351 3,323 23.69 1,303 19.43 0.4365
2021-07-29 2021-06-30 13F MERCK COM 58933Y105 14,028 4,107 41.40 1,091 42.61 0.3437
2021-04-28 2021-03-31 13F MERCK & CO. COM 58933Y105 9,921 3,342 50.80 765 42.19 0.2572
2021-02-03 2020-12-31 13F MERCK & CO. COM 58933Y105 6,579 146 2.27 538 0.75 0.1946
2020-10-21 2020-09-30 13F MERCK & CO. COM 58933Y105 6,433 3,684 134.01 534 150.70 0.2125
2020-07-20 2020-06-30 13F MERCK & CO. COM 58933Y105 2,749 2,749 213 0.0761
2016-05-09 2016-03-31 13F MERCK & CO INC COM 58933Y105 0 0 0 0.0000
2016-02-02 2015-12-31 13F MERCK & CO INC COM 58933Y105 0 0 0 0.0000
2015-11-10 2015-09-30 13F MERCK & CO INC COM 58933Y105 0 -81,792 -100.00 0 -100.00
2015-08-10 2015-06-30 13F MERCK & CO INC COM 58933Y105 81,792 -1,202 -1.45 4,656 -2.39 2.1685
2015-05-05 2015-03-31 13F MERCK & CO INC COM 58933Y105 82,994 82,994 4,770 1.9969
2015-02-04 2014-12-31 13F MERCK & CO INC COM 58933Y105 0 -153,308 -100.00 0 -100.00
2014-10-28 2014-09-30 13F MERCK & CO INC COM 58933Y105 153,308 -2,964 -1.90 9,088 0.53 3.8888
2014-07-23 2014-06-30 13F MERCK & CO INC COM 58933Y105 156,272 73,732 89.33 9,040 92.96 3.5455
2014-04-25 2014-03-31 13F MERCK & CO INC COM 58933Y105 82,540 82,540 4,685 2.0260
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.