Merck & Co., Inc.
BG ˙ BUL ˙ US58933Y1055
SecurityBG:6MK / Merck & Co., Inc.
InstitutionDiversified Trust Co
Latest Disclosed Ownership195,208 shares
Latest Disclosed Value $ 23,481,569
Diversified Trust Co reports 2.67% decrease in ownership of 6MK / Merck & Co., Inc.

On April 16, 2026 - Diversified Trust Co filed a 13F-HR form disclosing ownership of 195,208 shares of Merck & Co., Inc. (BG:6MK) valued at $23,481,569 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 9, 2026 disclosing 200,558 shares of Merck & Co., Inc.. This represents a change in shares of -2.67% 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)
2026-04-16 2026-03-31 13F MERCK COM 58933Y105 195,208 -5,350 -2.67 23,482 11.23 0.2876
2026-01-09 2025-12-31 13F MERCK COM 58933Y105 200,558 -7,280 -3.50 21,111 21.02 0.3886
2025-10-20 2025-09-30 13F MERCK COM 58933Y105 207,838 18,187 9.59 17,444 16.19 0.3484
2025-07-11 2025-06-30 13F MERCK COM 58933Y105 189,651 6,930 3.79 15,013 -8.47 0.3332
2025-04-24 2025-03-31 13F MERCK COM 58933Y105 182,721 20,757 12.82 16,401 1.79 0.4057
2025-01-07 2024-12-31 13F MERCK COM 58933Y105 161,964 6,691 4.31 16,112 -8.62 0.3927
2024-10-07 2024-09-30 13F MERCK COM 58933Y105 155,273 14,461 10.27 17,633 1.15 0.4443
2024-07-16 2024-06-30 13F MERCK COM 58933Y105 140,812 15,292 12.18 17,433 5.25 0.4926
2024-04-18 2024-03-31 13F MERCK COM 58933Y105 125,520 -6,309 -4.79 16,562 15.25 0.4992
2024-01-08 2023-12-31 13F MERCK COM 58933Y105 131,829 27,304 26.12 14,372 33.56 0.4831
2023-11-17 2023-09-30 13F MERCK COM 58933Y105 104,525 51 0.05 10,761 -10.74 0.4071
2023-07-18 2023-06-30 13F MERCK COM 58933Y105 104,474 5,567 5.63 12,055 14.57 0.4400
2023-04-07 2023-03-31 13F MERCK COM 58933Y105 98,907 1,131 1.16 10,523 105,120.00 0.4097
2023-01-17 2022-12-31 13F MERCK COM 58933Y105 97,776 8,585 9.63 11 -99.87 0.4519
2022-10-14 2022-09-30 13F MERCK COM 58933Y105 89,191 698 0.79 7,682 -4.78 0.3476
2022-07-12 2022-06-30 13F MERCK COM 58933Y105 88,493 -2,075 -2.29 8,068 8.57 0.3380
2022-04-07 2022-03-31 13F MERCK COM 58933Y105 90,568 -1,746 -1.89 7,431 5.03 0.2594
2022-01-13 2021-12-31 13F MERCK COM 58933Y105 92,314 3,246 3.64 7,075 5.75 0.2329
2022-01-13 2021-09-30 13F MERCK COM 58933Y105 89,068 3,862 4.53 6,690 0.97 0.2405
2021-07-20 2021-06-30 13F MERCK COM 58933Y105 85,206 -5,705 -6.28 6,626 -5.45 0.2390
2021-05-10 2021-03-31 13F MERCK & CO. COM 58933Y105 90,911 5,534 6.48 7,008 0.34 0.2702
2021-01-08 2020-12-31 13F MERCK & CO. COM 58933Y105 85,377 3,789 4.64 6,984 3.19 0.2832
2020-10-15 2020-09-30 13F MERCK & CO. COM 58933Y105 81,588 9,502 13.18 6,768 21.42 0.3125
2020-07-07 2020-06-30 13F MERCK & CO. COM 58933Y105 72,086 1,357 1.92 5,574 2.43 0.2817
2020-04-10 2020-03-31 13F MERCK & CO. COM 58933Y105 70,729 1,173 1.69 5,442 -13.97 0.3183
2020-01-09 2019-12-31 13F MERCK COM 58933Y105 69,556 15,763 29.30 6,326 39.71 0.2835
2019-10-09 2019-09-30 13F MERCK COM 58933Y105 53,793 33 0.06 4,528 0.44 0.2124
2019-07-12 2019-06-30 13F MERCK COM 58933Y105 53,760 -6,597 -10.93 4,508 -10.20 0.2143
2019-05-22 2019-03-31 13F MERCK COM 58933Y105 60,357 -8,872 -12.82 5,020 -5.10 0.2445
2019-01-18 2018-12-31 13F MERCK COM 58933Y105 69,229 42,679 160.75 5,290 180.93 0.2955
2018-11-26 2018-09-30 13F MERCK COM 58933Y105 26,550 -1,337 -4.79 1,883 11.22 0.0938
2018-07-23 2018-06-30 13F MERCK COM 58933Y105 27,887 -657 -2.30 1,693 8.87 0.1078
2018-06-01 2018-03-31 13F MERCK COM 58933Y105 28,544 -5,495 -16.14 1,555 -18.80 0.0993
2018-01-19 2017-12-31 13F MERCK COM 58933Y105 34,039 -964 -2.75 1,915 -14.55 0.1171
2017-10-17 2017-09-30 13F MERCK COM 58933Y105 35,003 -863 -2.41 2,241 -2.52 0.1712
2017-07-18 2017-06-30 13F MERCK COM 58933Y105 35,866 953 2.73 2,299 3.65 0.1868
2017-04-21 2017-03-31 13F MERCK COM 58933Y105 34,913 -2,466 -6.60 2,218 0.77 0.1702
2017-02-22 2016-12-31 13F MERCK COM 58933Y105 37,379 840 2.30 2,201 -3.46 0.1868
2016-11-03 2016-09-30 13F MERCK COM 58933Y105 36,539 200 0.55 2,280 8.93 0.2663
2016-07-26 2016-06-30 13F MERCK COM 58933Y105 36,339 -1,022 -2.74 2,093 5.87 0.2415
2016-05-02 2016-03-31 13F MERCK & CO INC COM 58933Y105 37,361 56 0.15 1,977 0.36 0.2176
2016-01-27 2015-12-31 13F MERCK & CO INC COM 58933Y105 37,305 14 0.04 1,970 6.95 0.2111
2015-11-02 2015-09-30 13F MERCK & CO INC COM 58933Y105 37,291 -662 -1.74 1,842 -14.76 0.1979
2015-07-15 2015-06-30 13F MERCK & CO INC COM 58933Y105 37,953 608 1.63 2,161 0.65 0.2042
2015-04-29 2015-03-31 13F MERCK & CO INC COM 58933Y105 37,345 37,345 0.00 2,147 0.1859
2015-02-04 2014-12-31 13F MERCK & CO INC COM 58933Y105 0 -33,918 -100.00 0 -100.00
2014-08-15 2014-06-30 13F MERCK & CO INC COM 58933Y105 33,918 -3,646 -9.71 1,962 4.36 0.1636
2014-02-10 2013-12-31 13F MERCK Common 58933Y105 37,564 800 2.18 1,880 7.43 0.1917
2013-10-18 2013-09-30 13F MERCK Common 58933Y105 36,764 427 1.18 1,750 3.67 0.1849
2013-07-23 2013-06-30 13F MERCK Common 58933Y105 36,337 36,337 1,688 0.2008
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.