Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionKestra Private Wealth Services, Llc
Latest Disclosed Ownership260,145 shares
Latest Disclosed Value $ 31,292,801
Kestra Private Wealth Services, Llc reports 1.46% increase in ownership of MRK / Merck & Co., Inc.

On April 20, 2026 - Kestra Private Wealth Services, Llc filed a 13F-HR form disclosing ownership of 260,145 shares of Merck & Co., Inc. (MX:MRK) valued at $31,292,801 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 256,402 shares of Merck & Co., Inc.. This represents a change in shares of 1.46% 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)
2026-04-20 2026-03-31 13F MERCK COM 58933Y105 260,145 3,743 1.46 31,293 15.95 0.3857
2026-01-29 2025-12-31 13F MERCK CL A COM STK 58933Y105 256,402 -2,595 -1.00 26,989 24.16 0.3349
2025-11-17 2025-09-30 13F MERCK COM 58933Y105 258,997 26,528 11.41 21,738 18.12 0.2834
2025-08-07 2025-06-30 13F MERCK COM 58933Y105 232,469 10,221 4.60 18,402 -7.75 0.2645
2025-05-05 2025-03-31 13F MERCK COM 58933Y105 222,248 10,298 4.86 19,949 -5.39 0.3327
2025-01-28 2024-12-31 13F MERCK COM 58933Y105 211,950 -12,275 -5.47 21,085 -17.22 0.3582
2024-11-13 2024-09-30 13F MERCK COM 58933Y105 224,225 936 0.42 25,469 -7.86 0.4670
2024-08-12 2024-06-30 13F MERCK COM 58933Y105 223,289 8,308 3.86 27,643 -2.55 0.5535
2024-05-02 2024-03-31 13F MERCK COM 58933Y105 214,981 -540 -0.25 28,367 20.73 0.6398
2024-02-05 2023-12-31 13F MERCK COM 58933Y105 215,521 12,477 6.14 23,496 12.40 0.5995
2023-11-08 2023-09-30 13F MERCK COM 58933Y105 203,044 35,736 21.36 20,903 8.28 0.6572
2023-08-08 2023-06-30 13F MERCK COM 58933Y105 167,308 23,090 16.01 19,306 25.82 0.6610
2023-05-12 2023-03-31 13F MERCK COM 58933Y105 144,218 10,979 8.24 15,343 3.80 0.6105
2023-02-01 2022-12-31 13F MERCK COM 58933Y105 133,239 1,877 1.43 14,783 134,281.82 0.7491
2022-11-14 2022-09-30 13F MERCK COM 58933Y105 131,362 7,915 6.41 11 0.00 0.6548
2022-08-12 2022-06-30 13F MERCK COM 58933Y105 123,447 16,576 15.51 11 37.50 0.6423
2022-07-21 2022-03-31 13F/A-1 MERCK COM 58933Y105 106,871 6,660 6.65 9 14.29 0.4349
2022-05-26 2022-03-31 13F MERCK COM 58933Y105 106,871 6,660 8,769 0.4349
2022-07-21 2021-12-31 13F/A-1 MERCK COM 58933Y105 100,211 2,051 2.09 8 0.00 0.3675
2022-01-21 2021-12-31 13F MERCK COM 58933Y105 100,211 2,051 7,680 0.3675
2022-07-26 2021-09-30 13F/A-1 MERCK COM 58933Y105 98,160 6,281 6.84 7 0.00 0.4114
2021-10-21 2021-09-30 13F MERCK COM 58933Y105 98,160 6,281 7,373 0.4114
2022-07-27 2021-06-30 13F/A-1 MERCK COM 58933Y105 91,879 3,312 3.74 7 16.67 0.4346
2021-07-30 2021-06-30 13F MERCK COM 58933Y105 91,879 3,312 7,145 0.4346
2022-07-27 2021-03-31 13F/A-1 MERCK & CO. COM 58933Y105 88,567 4,418 5.25 7 0.00 0.4757
2021-05-11 2021-03-31 13F MERCK & CO. COM 58933Y105 88,567 4,418 6,828 0.4757
2022-07-28 2020-12-31 13F/A-1 MERCK & CO. COM 58933Y105 84,149 -453 -0.54 7 -100.00 0.4995
2021-01-21 2020-12-31 13F MERCK & CO. COM 58933Y105 84,149 -453 6,782 0.4995
2022-07-28 2020-09-30 13F/A-1 MERCK & CO. COM 58933Y105 84,602 84,602 7,018,000 0.6090
2020-11-09 2020-09-30 13F MERCK & CO. COM 58933Y105 84,602 84,602 7,018 0.6090
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.