Merck & Co., Inc.
DE ˙ XTRA ˙ US58933Y1055
102,78 € ↑2,84 (2,84%)
2026-06-04
DEL PRIS
SecurityDE:6MK / Merck & Co., Inc.
InstitutionFiduciary Trust Co
Latest Disclosed Ownership406,382 shares
Latest Disclosed Value $ 48,883,693
Fiduciary Trust Co reports 4.13% decrease in ownership of 6MK / Merck & Co., Inc.

On May 15, 2026 - Fiduciary Trust Co filed a 13F-HR form disclosing ownership of 406,382 shares of Merck & Co., Inc. (DE:6MK) valued at $42,345,004 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 423,896 shares of Merck & Co., Inc.. This represents a change in shares of -4.13% during the quarter. The current value of the position is $41,767,942 USD.

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 406,382 -17,514 -4.13 48,884 9.56 0.3364
2026-02-13 2025-12-31 13F MERCK COM 58933Y105 423,896 -8,147 -1.89 44,619 23.05 0.5072
2025-11-14 2025-09-30 13F MERCK COM 58933Y105 432,043 2,774 0.65 36,261 6.71 0.4108
2025-08-14 2025-06-30 13F MERCK COM 58933Y105 429,269 -19,910 -4.43 33,981 -15.72 0.4181
2025-05-15 2025-03-31 13F MERCK COM 58933Y105 449,179 33,280 8.00 40,318 -2.55 0.5280
2025-02-14 2024-12-31 13F MERCK COM 58933Y105 415,899 -13,344 -3.11 41,374 -15.12 0.5462
2024-11-14 2024-09-30 13F MERCK COM 58933Y105 429,243 16,322 3.95 48,745 -4.65 0.6808
2024-08-14 2024-06-30 13F MERCK COM 58933Y105 412,921 3,421 0.84 51,120 -5.39 0.7674
2024-05-14 2024-03-31 13F MERCK COM 58933Y105 409,500 2,742 0.67 54,034 21.85 0.8291
2024-02-12 2023-12-31 13F MERCK COM 58933Y105 406,758 6,034 1.51 44,345 7.49 0.7409
2023-11-14 2023-09-30 13F MERCK COM 58933Y105 400,724 -12,184 -2.95 41,255 -13.41 0.7544
2023-08-01 2023-06-30 13F MERCK COM 58933Y105 412,908 -1,698 -0.41 47,645 8.02 0.8395
2023-05-15 2023-03-31 13F MERCK COM 58933Y105 414,606 -5,020 -1.20 44,110 -5.26 0.8180
2023-02-14 2022-12-31 13F MERCK COM 58933Y105 419,626 -4,285 -1.01 46,558 27.53 0.9059
2022-11-14 2022-09-30 13F MERCK COM 58933Y105 423,911 -3,679 -0.86 36,507 -6.35 0.7899
2022-08-12 2022-06-30 13F MERCK COM 58933Y105 427,590 1,627 0.38 38,983 11.54 0.8211
2022-05-12 2022-03-31 13F MERCK COM 58933Y105 425,963 -4,023 -0.94 34,950 6.06 0.6266
2022-02-14 2021-12-31 13F MERCK COM 58933Y105 429,986 -1,629 -0.38 32,954 1.65 0.5419
2021-11-12 2021-09-30 13F MERCK COM 58933Y105 431,615 -3,285 -0.76 32,419 -4.15 0.5769
2021-08-16 2021-06-30 13F MERCK COM 58933Y105 434,900 -11,581 -2.59 33,822 -1.73 0.6546
2021-05-19 2021-03-31 13F MERCK COM 58933Y105 446,481 -9,112 -2.00 34,419 -7.64 0.6984
2021-01-26 2020-12-31 13F MERCK COM 58933Y105 455,593 -2,559 -0.56 37,268 -1.94 0.7767
2020-11-13 2020-09-30 13F MERCK COM 58933Y105 458,152 424 0.09 38,004 7.37 0.8954
2020-08-13 2020-06-30 13F MERCK COM 58933Y105 457,728 -2,623 -0.57 35,396 -0.06 0.8759
2020-05-15 2020-03-31 13F MERCK COM 58933Y105 460,351 586 0.13 35,419 -15.30 1.0278
2020-02-04 2019-12-31 13F MERCK COM 58933Y105 459,765 1,526 0.33 41,816 8.40 0.9752
2019-11-12 2019-09-30 13F MERCK COM 58933Y105 458,239 12,003 2.69 38,574 3.09 0.9681
2019-08-14 2019-06-30 13F MERCK COM 58933Y105 446,236 11,229 2.58 37,417 3.42 0.9816
2019-05-07 2019-03-31 13F MERCK COM 58933Y105 435,007 -6,063 -1.37 36,180 7.35 0.9725
2019-01-29 2018-12-31 13F MERCK COM 58933Y105 441,070 -14,738 -3.23 33,702 4.23 1.0324
2018-11-13 2018-09-30 13F MERCK COM 58933Y105 455,808 -5,171 -1.12 32,335 15.56 0.9075
2018-08-03 2018-06-30 13F MERCK COM 58933Y105 460,979 -5,722 -1.23 27,981 10.07 0.8471
2018-05-07 2018-03-31 13F MERCK COM 58933Y105 466,701 22,744 5.12 25,421 1.76 0.7854
2018-01-29 2017-12-31 13F MERCK COM 58933Y105 443,957 -19,701 -4.25 24,981 -15.85 0.7426
2017-11-02 2017-09-30 13F MERCK COM 58933Y105 463,658 5,177 1.13 29,688 1.03 0.9135
2017-08-09 2017-06-30 13F MERCK COM 58933Y105 458,481 27,889 6.48 29,384 7.40 0.9008
2017-05-15 2017-03-31 13F MERCK COM 58933Y105 430,592 8,835 2.09 27,359 10.19 0.8361
2017-02-14 2016-12-31 13F MERCK COM 58933Y105 421,757 4,764 1.14 24,829 -4.60 0.8045
2016-11-14 2016-09-30 13F MERCK COM 58933Y105 416,993 4,585 1.11 26,025 9.54 0.8913
2016-08-12 2016-06-30 13F MERCK & CO INC COM 58933Y105 412,408 3,391 0.83 23,759 9.79 0.8347
2016-05-16 2016-03-31 13F MERCK & CO INC COM 58933Y105 409,017 19,817 5.09 21,641 -29.18 0.7651
2016-02-03 2015-12-31 13F MERCK & CO INC COMMON 58933Y105 389,200 -4,073 -1.04 30,558 57.32 1.2957
2015-11-10 2015-09-30 13F MERCK & CO INC COMMON 58933Y105 393,273 11,777 3.09 19,424 -10.57 0.8758
2015-08-10 2015-06-30 13F MERCK & CO INC Common 58933Y105 381,496 23,653 6.61 21,719 5.59 0.9036
2015-04-28 2015-03-31 13F MERCK & CO INC COMMON 58933Y105 357,843 -3,421 -0.95 20,569 0.25 0.8518
2015-01-26 2014-12-31 13F MERCK & CO INC Common 58933Y105 361,264 744 0.21 20,517 -4.00 0.8623
2014-11-03 2014-09-30 13F MERCK & CO INC Common 58933Y105 360,520 -6,995 -1.90 21,372 0.53 0.9426
2014-07-25 2014-06-30 13F MERCK & CO INC Common 58933Y105 367,515 -12,768 -3.36 21,260 -1.52 0.9093
2014-05-13 2014-03-31 13F MERCK & CO INC Common 58933Y105 380,283 -8,603 -2.21 21,589 10.92 0.9553
2014-02-19 2013-12-31 13F MERCK & CO INC Common 58933Y105 388,886 -14,407 -3.57 19,464 1.38 0.8607
2013-10-31 2013-09-30 13F/A-1 MERCK & CO INC Common 58933Y105 403,293 7 19,200 0.8842
2013-11-06 2013-09-30 13F/A-2 MERCK & CO INC Common 58933Y105 403,293 7 0.00 19,200 2.49 0.8842
2013-10-29 2013-09-30 13F MERCK & CO INC Common 58933Y105 403,293 19,200
2013-08-08 2013-06-30 13F MERCK & CO INC Common 58933Y105 403,286 403,286 18,733 0.8671
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.