Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionStrategic Advisors LLC
Latest Disclosed Ownership8,359 shares
Latest Disclosed Value $ 1,005,619
Strategic Advisors LLC reports 4.49% decrease in ownership of MRK / Merck & Co., Inc.

On May 14, 2026 - Strategic Advisors LLC filed a 13F-HR form disclosing ownership of 8,359 shares of Merck & Co., Inc. (MX:MRK) valued at $1,005,619 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 8,752 shares of Merck & Co., Inc.. This represents a change in shares of -4.49% 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)
2026-05-14 2026-03-31 13F MERCK COM 58933Y105 8,359 -393 -4.49 1,006 9.12 0.1670
2026-02-10 2025-12-31 13F MERCK COM 58933Y105 8,752 302 3.57 921 29.90 0.1443
2025-11-03 2025-09-30 13F MERCK COM 58933Y105 8,450 -492 -5.50 709 0.28 0.1139
2025-08-12 2025-06-30 13F MERCK COM 58933Y105 8,942 -4,391 -32.93 708 -40.89 0.1392
2025-04-17 2025-03-31 13F MERCK COM 58933Y105 13,333 -872 -6.14 1,197 -15.36 0.2306
2025-01-31 2024-12-31 13F MERCK COM 58933Y105 14,205 893 6.71 1,413 -6.49 0.2552
2024-10-09 2024-09-30 13F MERCK COM 58933Y105 13,312 68 0.51 1,512 -7.81 0.2820
2024-07-11 2024-06-30 13F MERCK COM 58933Y105 13,244 -400 -2.93 1,640 -8.94 0.3181
2024-04-22 2024-03-31 13F MERCK COM 58933Y105 13,644 -1,599 -10.49 1,800 8.37 0.3551
2024-01-19 2023-12-31 13F MERCK COM 58933Y105 15,243 84 0.55 1,662 6.47 0.3145
2023-10-13 2023-09-30 13F MERCK COM 58933Y105 15,159 -565 -3.59 1,561 -14.00 0.3077
2023-07-31 2023-06-30 13F MERCK COM 58933Y105 15,724 -54 -0.34 1,814 8.10 0.3456
2023-04-27 2023-03-31 13F MERCK COM 58933Y105 15,778 -747 -4.52 1,679 -8.46 0.3399
2023-01-23 2022-12-31 13F MERCK COM 58933Y105 16,525 -72,804 -81.50 1,833 -76.17 0.4084
2022-11-10 2022-09-30 13F Merck COM 58933Y105 89,329 -5,530 -5.83 7,693 -11.04 1.7058
2022-08-03 2022-06-30 13F Merck COM 58933Y105 94,859 -181 -0.19 8,648 10.90 1.8081
2022-05-10 2022-03-31 13F Merck COM 58933Y105 95,040 -520 -0.54 7,798 6.49 1.3539
2022-01-21 2021-12-31 13F Merck COM 58933Y105 95,560 53,929 129.54 7,323 134.26 1.0417
2021-10-21 2021-09-30 13F Merck COM 58933Y105 41,631 20,593 97.88 3,126 91.08 0.6731
2021-08-10 2021-06-30 13F Merck COM 58933Y105 21,038 -864 -3.94 1,636 -3.08 0.4254
2021-05-05 2021-03-31 13F Merck COM 58933Y105 21,902 3 0.01 1,688 -8.21 0.4898
2021-02-11 2020-12-31 13F Merck COM 58933Y105 21,899 -24 -0.11 1,839 3.26 0.5316
2020-10-13 2020-09-30 13F Merck COM 58933Y105 21,923 -96 -0.44 1,781 2.71 0.5973
2020-08-12 2020-06-30 13F Merck COM 58933Y105 22,019 10 0.05 1,734 -3.45 0.6469
2020-04-30 2020-03-31 13F Merck COM 58933Y105 22,009 322 1.48 1,796 -8.92 0.7824
2020-02-05 2019-12-31 13F Merck COM 58933Y105 21,687 345 1.62 1,972 9.74 0.6869
2019-10-17 2019-09-30 13F Merck COM 58933Y105 21,342 426 2.04 1,797 2.51 0.6741
2019-07-22 2019-06-30 13F Merck COM 58933Y105 20,916 -310 -1.46 1,753 -0.68 0.6679
2019-04-15 2019-03-31 13F Merck COM 58933Y105 21,226 -17,241 -44.82 1,765 -39.95 0.6820
2019-01-24 2018-12-31 13F Merck COM 58933Y105 38,467 -898 -2.28 2,939 5.23 1.2830
2018-10-18 2018-09-30 13F Merck COM 58933Y105 39,365 -268 -0.68 2,793 16.08 1.0221
2018-07-30 2018-06-30 13F Merck COM 58933Y105 39,633 -1,831 -4.42 2,406 6.51 0.9659
2018-04-19 2018-03-31 13F Merck COM 58933Y105 41,464 -1,588 -3.69 2,259 -6.77 0.9350
2018-01-16 2017-12-31 13F Merck COM 58933Y105 43,052 2,220 5.44 2,423 -7.31 0.9905
2017-11-13 2017-09-30 13F Merck COM 58933Y105 40,832 -1,161 -2.76 2,614 -2.86 1.1340
2017-08-10 2017-06-30 13F MERCK COM 58933Y105 41,993 -421 -0.99 2,691 -0.15 1.2299
2017-05-03 2017-03-31 13F MERCK COM 58933Y105 42,414 6,403 17.78 2,695 27.12 1.2726
2017-02-06 2016-12-31 13F MERCK COM 58933Y105 36,011 -1,304 -3.49 2,120 -8.97 1.1126
2016-10-24 2016-09-30 13F MERCK COM 58933Y105 37,315 -20,763 -35.75 2,329 -30.39 1.3049
2016-07-19 2016-06-30 13F MERCK COM 58933Y105 58,078 -32 -0.06 3,346 8.81 1.9305
2016-05-06 2016-03-31 13F MERCK & CO INC COM 58933Y105 58,110 -182 -0.31 3,075 -0.10 1.7496
2016-01-28 2015-12-31 13F MERCK & CO INC COM 58933Y105 58,292 -1,415 -2.37 3,079 4.37 2.0150
2015-11-04 2015-09-30 13F MERCK & CO INC COM 58933Y105 59,707 1,364 2.34 2,949 -11.20 2.0456
2015-08-12 2015-06-30 13F MERCK & CO INC COM 58933Y105 58,343 18,585 46.75 3,321 44.39 2.1177
2015-05-13 2015-03-31 13F MERCK & CO INC COM 58933Y105 39,758 -13,022 -24.67 2,300 -23.26 1.4740
2015-01-20 2014-12-31 13F MERCK & CO INC COM 58933Y105 52,780 14,184 36.75 2,997 30.99 1.9534
2014-11-14 2014-09-30 13F MERCK & CO INC COM 58933Y105 38,596 -1,162 -2.92 2,288 -0.52 1.5025
2014-08-14 2014-06-30 13F MERCK & CO INC COM 58933Y105 39,758 444 1.13 2,300 3.05 1.4710
2014-05-08 2014-03-31 13F MERCK & CO INC COM 58933Y105 39,314 -24,966 -38.84 2,232 -30.62 1.4972
2014-01-31 2013-12-31 13F MERCK & CO INC COM 58933Y105 64,280 872 1.38 3,217 6.56 2.1882
2013-11-18 2013-09-30 13F MERCK & CO INC COM 58933Y105 63,408 3,071 5.09 3,019 8.01 2.4789
2013-08-14 2013-06-30 13F MERCK & CO INC COM 58933Y105 60,337 60,337 2,795 2.4988
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.