Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionEmpirical Financial Services, LLC d.b.a. Empirical Wealth Management
Latest Disclosed Ownership45,169 shares
Latest Disclosed Value $ 5,433,431
Empirical Financial Services, LLC d.b.a. Empirical Wealth Management reports 19.09% increase in ownership of MRK / Merck & Co., Inc.

On May 4, 2026 - Empirical Financial Services, LLC d.b.a. Empirical Wealth Management filed a 13F-HR form disclosing ownership of 45,169 shares of Merck & Co., Inc. (MX:MRK) valued at $5,433,431 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 16, 2026 disclosing 37,930 shares of Merck & Co., Inc.. This represents a change in shares of 19.09% 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)
2026-05-04 2026-03-31 13F MERCK COM 58933Y105 45,169 7,239 19.09 5,433 36.10 0.0648
2026-01-16 2025-12-31 13F MERCK COM 58933Y105 37,930 9,826 34.96 3,993 69.30 0.0711
2025-11-10 2025-09-30 13F MERCK COM 58933Y105 28,104 -1,390 -4.71 2,359 1.03 0.0472
2025-07-21 2025-06-30 13F MERCK COM 58933Y105 29,494 -4,811 -14.02 2,335 -24.20 0.0527
2025-05-08 2025-03-31 13F MERCK COM 58933Y105 34,305 -2,908 -7.81 3,079 -16.81 0.0792
2025-01-22 2024-12-31 13F MERCK COM 58933Y105 37,213 2,660 7.70 3,702 -5.66 0.1004
2024-11-01 2024-09-30 13F MERCK COM 58933Y105 34,553 3,250 10.38 3,924 1.24 0.1101
2024-08-09 2024-06-30 13F MERCK COM 58933Y105 31,303 9,853 45.93 3,875 36.93 0.1148
2024-05-07 2024-03-31 13F MERCK COM 58933Y105 21,450 -570 -2.59 2,830 17.92 0.0854
2024-02-06 2023-12-31 13F MERCK COM 58933Y105 22,020 -258 -1.16 2,401 4.67 0.0797
2023-11-03 2023-09-30 13F MERCK COM 58933Y105 22,278 4,523 25.47 2,294 11.96 0.0898
2023-08-11 2023-06-30 13F MERCK COM 58933Y105 17,755 1,008 6.02 2,049 14.99 0.0824
2023-05-09 2023-03-31 13F MERCK COM 58933Y105 16,747 483 2.97 1,782 -1.27 0.0773
2023-02-08 2022-12-31 13F MERCK COM 58933Y105 16,264 646 4.14 1,804 34.13 0.0850
2022-11-03 2022-09-30 13F MERCK COM 58933Y105 15,618 528 3.50 1,345 -2.25 0.0705
2022-08-02 2022-06-30 13F MERCK COM 58933Y105 15,090 2,952 24.32 1,376 38.15 0.0722
2022-05-13 2022-03-31 13F MERCK COM 58933Y105 12,138 -2,499 -17.07 996 -11.23 0.0497
2022-02-14 2021-12-31 13F MERCK COM 58933Y105 14,637 1,419 10.74 1,122 12.99 0.0560
2021-11-02 2021-09-30 13F MERCK COM 58933Y105 13,218 -1,639 -11.03 993 -14.03 0.0566
2021-08-12 2021-06-30 13F MERCK COM 58933Y105 14,857 1,179 8.62 1,155 9.58 0.0700
2021-05-17 2021-03-31 13F MERCK & CO. COM 58933Y105 13,678 3,459 33.85 1,054 26.08 0.0844
2021-02-12 2020-12-31 13F MERCK & CO. COM 58933Y105 10,219 -19,687 -65.83 836 -66.30 0.0637
2020-11-12 2020-09-30 13F MERCK & CO. COM 58933Y105 29,906 -4,931 -14.15 2,481 -7.91 0.2120
2020-08-12 2020-06-30 13F MERCK & CO. COM 58933Y105 34,837 970 2.86 2,694 3.38 0.2513
2020-05-11 2020-03-31 13F MERCK & CO. COM 58933Y105 33,867 4,174 14.06 2,606 -3.52 0.2849
2020-02-13 2019-12-31 13F MERCK COM 58933Y105 29,693 3,644 13.99 2,701 23.16 0.2968
2019-11-13 2019-09-30 13F MERCK COM 58933Y105 26,049 -1,611 -5.82 2,193 -5.43 0.2655
2019-08-12 2019-06-30 13F MERCK COM 58933Y105 27,660 846 3.16 2,319 3.99 0.3021
2019-05-13 2019-03-31 13F MERCK COM 58933Y105 26,814 16,941 171.59 2,230 195.76 0.3244
2019-02-13 2018-12-31 13F MERCK COM 58933Y105 9,873 -59 -0.59 754 6.95 0.1281
2018-11-13 2018-09-30 13F MERCK COM 58933Y105 9,932 3,380 51.59 705 77.14 0.1250
2018-08-13 2018-06-30 13F MERCK COM 58933Y105 6,552 1,177 21.90 398 35.84 0.0745
2018-05-14 2018-03-31 13F/A-1 MERCK COM 58933Y105 5,375 781 17.00 293 13.57 0.0579
2018-05-11 2018-03-31 13F MERCK COM 58933Y105 2,280 -2,314 293
2018-02-12 2017-12-31 13F MERCK COM 58933Y105 4,594 274 6.34 258 -6.86 0.0553
2017-11-13 2017-09-30 13F MERCK COM 58933Y105 4,320 98 2.32 277 2.21 0.0639
2017-08-10 2017-06-30 13F MERCK COM 58933Y105 4,222 397 10.38 271 11.52 0.0660
2017-05-12 2017-03-31 13F MERCK COM 58933Y105 3,825 3,825 243 0.0606
2016-04-21 2016-03-31 13F MERCK & CO INC COM 58933Y105 0 -4,312 -100.00 0 -100.00
2016-01-26 2015-12-31 13F MERCK & CO INC COM 58933Y105 4,312 -1,873 -30.28 228 -25.25 0.0555
2015-10-22 2015-09-30 13F MERCK & CO INC COM 58933Y105 6,185 -19 -0.31 305 -13.60 0.0720
2015-08-06 2015-06-30 13F MERCK & CO INC COM 58933Y105 6,204 2,213 55.45 353 54.15 0.0820
2015-05-07 2015-03-31 13F MERCK & CO INC COM 58933Y105 3,991 3,991 0.00 229 0.0549
2015-02-10 2014-12-31 13F MERCK & CO INC COM 58933Y105 0 -3,566 -100.00 0 -100.00
2014-11-12 2014-09-30 13F MERCK & CO INC COM 58933Y105 3,566 -267 -6.97 211 -3.21 0.0510
2014-05-06 2014-03-31 13F MERCK & CO INC COM 58933Y105 3,833 3,833 218 0.0574
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.