Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionCarret Asset Management, Llc
Latest Disclosed Ownership78,723 shares
Latest Disclosed Value $ 9,469,575
Carret Asset Management, Llc reports 3.02% decrease in ownership of MRK / Merck & Co., Inc.

On May 15, 2026 - Carret Asset Management, Llc filed a 13F-HR form disclosing ownership of 78,723 shares of Merck & Co., Inc. (MX:MRK) valued at $9,469,575 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 81,171 shares of Merck & Co., Inc.. This represents a change in shares of -3.02% 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)
2026-05-15 2026-03-31 13F MERCK COM 58933Y105 78,723 -2,448 -3.02 9,470 10.83 0.9271
2026-02-17 2025-12-31 13F MERCK COM 58933Y105 81,171 -770 -0.94 8,544 24.24 0.8110
2025-11-13 2025-09-30 13F MERCK COM 58933Y105 81,941 259 0.32 6,877 6.37 0.6690
2025-08-04 2025-06-30 13F MERCK COM 58933Y105 81,682 -431 -0.52 6,466 -12.28 0.6908
2025-04-22 2025-03-31 13F MERCK COM 58933Y105 82,113 1,463 1.81 7,370 -8.14 0.8327
2025-02-10 2024-12-31 13F MERCK COM 58933Y105 80,650 374 0.47 8,023 -11.99 0.8787
2024-10-24 2024-09-30 13F MERCK COM 58933Y105 80,276 1,170 1.48 9,116 -6.91 0.9890
2024-08-01 2024-06-30 13F MERCK COM 58933Y105 79,106 -542 -0.68 9,793 -6.81 1.1432
2024-04-19 2024-03-31 13F MERCK COM 58933Y105 79,648 -2,480 -3.02 10,510 17.38 1.2378
2024-02-02 2023-12-31 13F MERCK COM 58933Y105 82,128 -727 -0.88 8,954 4.97 1.1405
2023-10-12 2023-09-30 13F MERCK COM 58933Y105 82,855 -448 -0.54 8,530 -11.27 1.1888
2023-07-25 2023-06-30 13F MERCK COM 58933Y105 83,303 -1,452 -1.71 9,612 6.60 1.2744
2023-05-11 2023-03-31 13F MERCK COM 58933Y105 84,755 -5,672 -6.27 9,017 90,070.00 1.2526
2023-01-10 2022-12-31 13F MERCK COM 58933Y105 90,427 900 1.01 10 -99.87 1.3865
2022-11-14 2022-09-30 13F/A-1 MERCK COM 58933Y105 89,527 -1,028 -1.14 7,710 -6.61 1.1504
2022-10-11 2022-09-30 13F MERCK COM 58933Y105 89,527 -1,028 7,710 1.1504
2022-08-04 2022-06-30 13F MERCK COM 58933Y105 90,555 88 0.10 8,256 11.22 1.1452
2022-04-13 2022-03-31 13F MERCK COM 58933Y105 90,467 330 0.37 7,423 7.46 0.8498
2022-01-10 2021-12-31 13F MERCK COM 58933Y105 90,137 2,230 2.54 6,908 4.62 0.7647
2021-10-27 2021-09-30 13F MERCK COM 58933Y105 87,907 259 0.30 6,603 -3.12 0.7879
2021-07-14 2021-06-30 13F MERCK COM 58933Y105 87,648 5,893 7.21 6,816 8.14 0.7977
2021-07-14 2021-03-31 13F MERCK COM 58933Y105 81,755 2,284 2.87 6,303 -3.05 0.7818
2021-03-16 2020-12-31 13F MERCK COM 58933Y105 79,471 1,028 1.31 6,501 -0.09 0.8753
2020-11-16 2020-09-30 13F MERCK COM 58933Y105 78,443 230 0.29 6,507 7.59 0.9838
2020-08-12 2020-06-30 13F MERCK COM 58933Y105 78,213 535 0.69 6,048 1.19 0.9810
2020-05-18 2020-03-31 13F MERCK COM 58933Y105 77,678 -2,980 -3.69 5,977 -18.53 1.1473
2020-02-13 2019-12-31 13F MERCK COM 58933Y105 80,658 1,311 1.65 7,336 9.84 1.0700
2019-11-13 2019-09-30 13F MERCK COM 58933Y105 79,347 -710 -0.89 6,679 -0.51 1.0597
2019-08-12 2019-06-30 13F MERCK COM 58933Y105 80,057 329 0.41 6,713 1.24 1.0665
2019-05-15 2019-03-31 13F MERCK COM 58933Y105 79,728 -1,057 -1.31 6,631 7.42 1.0817
2019-02-13 2018-12-31 13F MERCK COM 58933Y105 80,785 -430 -0.53 6,173 7.15 1.1119
2018-11-13 2018-09-30 13F MERCK COM 58933Y105 81,215 -1,153 -1.40 5,761 15.22 0.8868
2018-08-08 2018-06-30 13F MERCK COM 58933Y105 82,368 364 0.44 5,000 11.93 0.8170
2018-05-14 2018-03-31 13F MERCK COM 58933Y105 82,004 817 1.01 4,467 -2.21 0.7350
2018-02-13 2017-12-31 13F MERCK COM 58933Y105 81,187 1,929 2.43 4,568 -9.99 0.7106
2017-11-14 2017-09-30 13F MERCK COM 58933Y105 79,258 369 0.47 5,075 0.38 0.8192
2017-08-15 2017-06-30 13F MERCK COM 58933Y105 78,889 5,610 7.66 5,056 8.59 0.8485
2017-05-08 2017-03-31 13F MERCK COM 58933Y105 73,279 1,837 2.57 4,656 10.70 0.8356
2017-02-16 2016-12-31 13F MERCK COM 58933Y105 71,442 1,276 1.82 4,206 -3.95 0.7969
2016-11-10 2016-09-30 13F MERCK COM 58933Y105 70,166 -300 -0.43 4,379 7.86 0.8192
2016-08-10 2016-06-30 13F MERCK COM 58933Y105 70,466 4,280 6.47 4,060 15.93 0.7847
2016-05-17 2016-03-31 13F MERCK COM 58933Y105 66,186 4,594 7.46 3,502 7.65 0.7433
2016-02-05 2015-12-31 13F MERCK COM 58933Y105 61,592 353 0.58 3,253 7.54 0.6942
2015-11-16 2015-09-30 13F MERCK COM 58933Y105 61,239 9,261 17.82 3,025 2.23 0.6600
2015-08-12 2015-06-30 13F MERCK COM 58933Y105 51,978 13,145 33.85 2,959 32.57 0.5879
2015-05-11 2015-03-31 13F MERCK COM 58933Y105 38,833 -115 -0.30 2,232 0.90 0.4337
2015-02-19 2014-12-31 13F MERCK COM 58933Y105 38,948 2,935 8.15 2,212 3.61 0.4186
2014-11-12 2014-09-30 13F MERCK COM 58933Y105 36,013 -295 -0.81 2,135 1.67 0.4145
2014-08-14 2014-06-30 13F MERCK COM 58933Y105 36,308 -191 -0.52 2,100 1.35 0.4020
2014-05-15 2014-03-31 13F MERCK COM 58933Y105 36,499 -866 -2.32 2,072 10.80 0.4136
2014-02-14 2013-12-31 13F MERCK COM 58933Y105 37,365 110 0.30 1,870 5.41 0.3821
2013-11-14 2013-09-30 13F MERCK COM 58933Y105 37,255 6,809 22.36 1,774 25.46 0.3937
2013-08-15 2013-06-30 13F MERCK COM 58933Y105 30,446 30,446 1,414 0.2938
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.