Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionUSA Financial Portformulas Corp
Latest Disclosed Ownership7,410 shares
Latest Disclosed Value $ 891,349
USA Financial Portformulas Corp ownership in MRK / Merck & Co., Inc.

On April 14, 2026 - USA Financial Portformulas Corp filed a 13F-HR form disclosing ownership of 7,410 shares of Merck & Co., Inc. (MX:MRK) valued at $891,349 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 14, 2025 disclosing 0 shares of Merck & Co., Inc..

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)
2026-04-14 2026-03-31 13F Merck COM 58933Y105 7,410 7,410 891 0.1680
2025-01-14 2024-12-31 13F Merck COM 58933Y105 0 -1,489 -100.00 0 -100.00
2024-10-08 2024-09-30 13F Merck COM 58933Y105 1,489 -3,040 -67.12 169 -69.82 0.0263
2024-07-12 2024-06-30 13F Merck COM 58933Y105 4,529 1,270 38.97 561 30.23 0.0909
2024-04-30 2024-03-31 13F Merck COM 58933Y105 3,259 2,879 757.63 430 948.78 0.0697
2024-02-07 2023-12-31 13F MERCK COM 58933Y105 380 -8,991 -95.94 41 -95.75 0.0072
2023-11-27 2023-09-30 13F MERCK COM 58933Y105 9,371 -91 -0.96 965 -11.64 1.4420
2023-11-27 2023-06-30 13F MERCK COM 58933Y105 9,462 -1,757 -15.66 1,092 -8.55 1.6769
2023-11-27 2023-03-31 13F MERCK COM 58933Y105 11,219 -4,087 -26.70 1,194 -9.48 1.9337
2022-10-24 2022-09-30 13F MERCK COM 58933Y105 15,306 5,773 60.56 1,318 51.67 2.0770
2022-08-15 2022-06-30 13F MERCK COM 58933Y105 9,533 8,427 761.93 869 854.95 1.0858
2022-08-16 2022-03-31 13F MERCK COM 58933Y105 1,106 -125 -10.15 91 -3.19 0.0973
2022-02-10 2021-12-31 13F MERCK COM 58933Y105 1,231 1,205 4,634.62 94 4,600.00 0.0806
2021-11-08 2021-09-30 13F MERCK COM 58933Y105 26 0 0.00 2 0.00 0.0018
2021-07-29 2021-06-30 13F MERCK COM 58933Y105 26 -84 -76.36 2 -75.00 0.0017
2021-05-06 2021-03-31 13F MERCK & CO. COM 58933Y105 110 9 8.91 8 0.00 0.0065
2021-01-29 2020-12-31 13F MERCK & CO. COM 58933Y105 101 89 741.67 8 700.00 0.0063
2020-10-09 2020-09-30 13F MERCK & CO. COM 58933Y105 12 -38 -76.00 1 -75.00 0.0008
2020-08-11 2020-06-30 13F MERCK & CO. COM 58933Y105 50 8 19.05 4 33.33 0.0030
2020-04-13 2020-03-31 13F MERCK & CO. COM 58933Y105 42 13 44.83 3 0.00 0.0019
2020-02-07 2019-12-31 13F MERCK COM 58933Y105 29 -41,397 -99.93 3 -99.91 0.0012
2019-11-14 2019-09-30 13F MERCK COM 58933Y105 41,426 -38,833 -48.38 3,487 -47.76 1.3538
2019-08-12 2019-06-30 13F MERCK COM 58933Y105 80,259 12,870 19.10 6,675 19.09 3.3486
2019-05-14 2019-03-31 13F MERCK COM 58933Y105 67,389 67,389 5,605 3.5307
2017-11-02 2017-09-30 13F/A-1 MERCK COM 58933Y105 0 -45,623 -100.00 0 -100.00
2017-08-23 2017-06-30 13F MERCK COM 58933Y105 45,623 -23,131 -33.64 2,924 -33.07 0.7054
2017-05-15 2017-03-31 13F MERCK COM 58933Y105 68,754 -84,918 -55.26 4,369 -51.71 1.0520
2017-03-03 2016-12-31 13F MERCK COM 58933Y105 153,672 153,672 9,047 2.2493
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.