Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionKestra Advisory Services, LLC
Latest Disclosed Ownership338,012 shares
Latest Disclosed Value $ 40,659,416
Kestra Advisory Services, LLC reports 15.74% increase in ownership of MRK / Merck & Co., Inc.

On April 30, 2026 - Kestra Advisory Services, LLC filed a 13F-HR form disclosing ownership of 338,012 shares of Merck & Co., Inc. (MX:MRK) valued at $40,659,416 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 292,038 shares of Merck & Co., Inc.. This represents a change in shares of 15.74% 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)
2026-04-30 2026-03-31 13F MERCK COM 58933Y105 338,012 45,974 15.74 40,659 32.27 0.1539
2026-02-13 2025-12-31 13F MERCK COM 58933Y105 292,038 14,114 5.08 30,740 31.78 0.1266
2025-11-14 2025-09-30 13F MERCK COM 58933Y105 277,924 6,836 2.52 23,326 8.70 0.1067
2025-08-15 2025-06-30 13F MERCK COM 58933Y105 271,088 -34,699 -11.35 21,459 -21.82 0.1046
2025-05-14 2025-03-31 13F MERCK COM 58933Y105 305,787 -10,655 -3.37 27,447 -12.81 0.1328
2025-02-10 2024-12-31 13F MERCK COM 58933Y105 316,442 6,740 2.18 31,480 -10.49 0.1720
2024-11-13 2024-09-30 13F MERCK COM 58933Y105 309,702 5,869 1.93 35,170 -6.50 0.1937
2024-08-14 2024-06-30 13F MERCK COM 58933Y105 303,833 27,731 10.04 37,615 3.25 0.2102
2024-05-15 2024-03-31 13F MERCK COM 58933Y105 276,102 14,205 5.42 36,432 27.60 0.2442
2024-02-14 2023-12-31 13F MERCK COM 58933Y105 261,897 22,385 9.35 28,552 15.80 0.2314
2023-11-13 2023-09-30 13F MERCK COM 58933Y105 239,512 -1,877 -0.78 24,658 -11.47 0.2425
2023-08-11 2023-06-30 13F MERCK COM 58933Y105 241,389 11,502 5.00 27,854 13.89 0.2789
2023-05-12 2023-03-31 13F MERCK COM 58933Y105 229,887 -80,167 -25.86 24,458 -28.90 0.2651
2023-01-31 2022-12-31 13F MERCK COM 58933Y105 310,054 26,554 9.37 34,400 143,233.33 0.3057
2022-11-01 2022-09-30 13F/A-1 MERCK COM 58933Y105 283,500 17,935 6.75 24 0.00 0.2613
2022-11-01 2022-09-30 13F MERCK COM 58933Y105 283,500 17,935 24,415 0.2613
2022-08-12 2022-06-30 13F MERCK COM 58933Y105 265,565 8,490 3.30 24 14.29 0.2488
2022-07-20 2022-03-31 13F/A-1 MERCK COM 58933Y105 257,075 1,236 0.48 21 10.53 0.2197
2022-04-26 2022-03-31 13F MERCK COM 58933Y105 257,075 1,236 21,093 0.2197
2022-07-25 2021-12-31 13F/A-1 MERCK COM 58933Y105 255,839 -96,842 -27.46 20 -26.92 0.1985
2022-01-20 2021-12-31 13F MERCK COM 58933Y105 255,839 -96,842 19,608 0.1985
2022-07-25 2021-09-30 13F/A-1 MERCK COM 58933Y105 352,681 116,153 49.11 26 44.44 0.2649
2021-10-19 2021-09-30 13F MERCK COM 58933Y105 352,681 116,153 26,490 0.2649
2022-07-26 2021-06-30 13F/A-1 MERCK COM 58933Y105 236,528 25,296 11.98 18 12.50 0.2088
2021-07-28 2021-06-30 13F MERCK COM 58933Y105 236,528 25,296 18,395 0.2088
2022-07-27 2021-03-31 13F/A-1 MERCK & CO. COM 58933Y105 211,232 -51,075 -19.47 16 -23.81 0.2067
2021-05-10 2021-03-31 13F MERCK & CO. COM 58933Y105 211,232 -51,075 16,284 0.2067
2022-07-28 2020-12-31 13F/A-1 MERCK & CO. COM 58933Y105 262,307 137,772 110.63 21 -100.00 0.2451
2021-01-20 2020-12-31 13F MERCK & CO. COM 58933Y105 262,307 137,772 21,139 0.2451
2022-07-29 2020-09-30 13F/A-1 MERCK & CO. COM 58933Y105 124,535 124,535 10,308,000 0.1924
2020-11-12 2020-09-30 13F MERCK & CO. COM 58933Y105 124,535 124,535 10,308 0.1924
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.