Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionGarrett Wealth Advisory Group, LLC
Latest Disclosed Ownership6,365 shares
Latest Disclosed Value $ 765,646
Garrett Wealth Advisory Group, LLC reports 36.79% increase in ownership of MRK / Merck & Co., Inc.

On April 27, 2026 - Garrett Wealth Advisory Group, LLC filed a 13F-HR form disclosing ownership of 6,365 shares of Merck & Co., Inc. (MX:MRK) valued at $765,646 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 4,653 shares of Merck & Co., Inc.. This represents a change in shares of 36.79% 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)
2026-04-27 2026-03-31 13F MERCK COM 58933Y105 6,365 1,712 36.79 766 56.44 0.1361
2026-02-04 2025-12-31 13F MERCK COM 58933Y105 4,653 0 0.00 490 25.38 0.0926
2025-11-18 2025-09-30 13F MERCK COM 58933Y105 4,653 -40 -0.85 391 5.12 0.0761
2025-08-12 2025-06-30 13F MERCK COM 58933Y105 4,693 0 0.00 371 -11.88 0.0786
2025-04-30 2025-03-31 13F MERCK COM 58933Y105 4,693 -22 -0.47 421 -10.23 0.0942
2025-02-06 2024-12-31 13F MERCK COM 58933Y105 4,715 986 26.44 469 10.87 0.1067
2024-11-01 2024-09-30 13F MERCK COM 58933Y105 3,729 0 0.00 423 -8.24 0.1046
2024-07-19 2024-06-30 13F MERCK COM 58933Y105 3,729 -95 -2.48 462 -8.53 0.1693
2024-04-30 2024-03-31 13F MERCK COM 58933Y105 3,824 0 0.00 505 21.15 0.2066
2024-02-14 2023-12-31 13F MERCK COM 58933Y105 3,824 290 8.21 417 14.60 0.1737
2023-11-13 2023-09-30 13F MERCK COM 58933Y105 3,534 251 7.65 364 -3.97 0.1656
2023-07-27 2023-06-30 13F MERCK COM 58933Y105 3,283 159 5.09 379 13.86 0.1681
2023-04-18 2023-03-31 13F MERCK COM 58933Y105 3,124 370 13.44 332 8.85 0.1621
2023-02-02 2022-12-31 13F MERCK COM 58933Y105 2,754 0 0.00 306 28.69 0.1569
2022-10-12 2022-09-30 13F MERCK COM 58933Y105 2,754 210 8.25 237 2.16 0.1323
2022-07-27 2022-06-30 13F MERCK COM 58933Y105 2,544 0 0.00 232 11.00 0.1262
2022-04-25 2022-03-31 13F MERCK & CO. COM 58933Y105 2,544 2,544 209 0.1072
2021-04-14 2021-03-31 13F MERCK & CO. COM 58933Y105 0 -2,662 -100.00 0 -100.00
2021-01-22 2020-12-31 13F MERCK & CO. COM 58933Y105 2,662 0 0.00 218 -1.36 0.1639
2020-10-23 2020-09-30 13F MERCK & CO. COM 58933Y105 2,662 -525 -16.47 221 -10.53 0.1747
2020-07-20 2020-06-30 13F MERCK & CO. COM 58933Y105 3,187 0 0.00 247 0.41 0.1977
2020-04-16 2020-03-31 13F MERCK & CO. COM 58933Y105 3,187 141 4.63 246 -11.51 0.2324
2020-01-28 2019-12-31 13F MERCK COM 58933Y105 3,046 -120 -3.79 278 4.51 0.2057
2019-10-18 2019-09-30 13F MERCK COM 58933Y105 3,166 0 0.00 267 0.38 0.1866
2019-07-29 2019-06-30 13F MERCK COM 58933Y105 3,166 -200 -5.94 265 -5.36 0.2109
2019-04-24 2019-03-31 13F MERCK COM 58933Y105 3,366 53 1.60 280 11.55 0.2297
2019-03-22 2018-12-31 13F MERCK COM 58933Y105 3,313 3,313 251 0.2288
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.