默克公司
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionSummit Trail Advisors, Llc
Latest Disclosed Ownership83,143 shares
Latest Disclosed Value $ 10,001,267
Summit Trail Advisors, Llc reports 15.28% increase in ownership of MRK / Merck & Co., Inc.

On May 12, 2026 - Summit Trail Advisors, Llc filed a 13F-HR form disclosing ownership of 83,143 shares of Merck & Co., Inc. (MX:MRK) valued at $10,001,267 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 72,122 shares of Merck & Co., Inc.. This represents a change in shares of 15.28% 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)
2026-05-12 2026-03-31 13F MERCK COM 58933Y105 83,143 11,021 15.28 10,001 30.75 0.1433
2026-02-17 2025-12-31 13F MERCK COM 58933Y105 72,122 -10,000 -12.18 7,649 9.95 0.1322
2025-11-14 2025-09-30 13F MERCK COM 58933Y105 82,122 15,685 23.61 6,957 30.89 0.0961
2025-08-14 2025-06-30 13F MERCK COM 58933Y105 66,437 5,602 9.21 5,315 -3.49 0.0912
2025-04-28 2025-03-31 13F MERCK COM 58933Y105 60,835 4,813 8.59 5,508 -1.96 0.1817
2025-01-29 2024-12-31 13F MERCK COM 58933Y105 56,022 21,148 60.64 5,617 40.92 0.2073
2024-11-12 2024-09-30 13F MERCK COM 58933Y105 34,874 2,163 6.61 3,986 -2.16 0.0988
2024-08-13 2024-06-30 13F Merck & Co Inc New Com COM 58933Y105 32,711 -1,056 -3.13 4,075 -9.02 0.1071
2024-04-23 2024-03-31 13F MERCK COM 58933Y105 33,767 7,728 29.68 4,479 56.74 0.1191
2024-02-06 2023-12-31 13F MERCK COM 58933Y105 26,039 -1,353 -4.94 2,858 0.63 0.0946
2023-10-30 2023-09-30 13F MERCK COM 58933Y105 27,392 3,306 13.73 2,839 1.54 0.1044
2023-07-25 2023-06-30 13F MERCK COM 58933Y105 24,086 6,407 36.24 2,796 47.78 0.1055
2023-05-04 2023-03-31 13F MERCK COM 58933Y105 17,679 2,567 16.99 1,892 12.15 0.0762
2023-02-07 2022-12-31 13F Merck & Co Inc New Com COM 58933Y105 15,112 816 5.71 1,688 35.94 0.0750
2022-11-10 2022-09-30 13F Merck & Co Inc New Com Stock 58933Y105 14,296 2,193 18.12 1,241 11.60 0.0671
2022-08-09 2022-06-30 13F Merck & Co Inc New Com COM 58933Y105 12,103 1,799 17.46 1,112 30.52 0.0688
2022-05-16 2022-03-31 13F Merck & Co Inc New Com EQUITY 58933Y105 10,304 2,645 34.53 852 43.92 0.0689
2022-02-11 2021-12-31 13F Merck & Co Inc New Com Equity 58933Y105 7,659 -1,088 -12.44 592 -10.71 0.0382
2021-11-16 2021-09-30 13F Merck & Co Inc New Com COM 58933Y105 8,747 1,431 19.56 663 15.51 0.0498
2021-08-16 2021-06-30 13F Merck & Co Inc New Com Equity 58933Y105 7,316 1,331 22.24 574 23.44 0.0503
2021-05-17 2021-03-31 13F MERCK & CO. Equity 58933Y105 5,985 -1,111 -15.66 465 -20.51 0.0501
2021-02-16 2020-12-31 13F MERCK & CO. Equity 58933Y105 7,096 -1,996 -21.95 585 -19.42 0.0738
2020-11-16 2020-09-30 13F/A-1 Merck & Co Inc New Com Equity 58933Y105 9,092 2,215 32.21 726 35.45 0.1404
2020-08-13 2020-06-30 13F Merck & Co Inc New Com Equity 58933Y105 6,877 686 11.08 536 11.67 0.1000
2020-05-15 2020-03-31 13F Merck & Co Inc New Com Equity 58933Y105 6,191 1,890 43.94 480 21.83 0.1291
2020-02-13 2019-12-31 13F Northern TR Corp Com Equity 58933Y105 4,301 -834 -16.24 394 -9.43 0.2284
2019-11-14 2019-09-30 13F Merck & Co Inc New Com Equity 58933Y105 5,135 1,233 31.60 435 32.22 0.1546
2019-08-08 2019-06-30 13F MERCK & CO INC COM EQUITY 58933Y105 3,902 579 17.42 329 18.35 0.1439
2019-05-16 2019-03-31 13F MERCK & CO INC COM EQUITY 58933Y105 3,323 -2,633 -44.21 278 -39.30 0.1203
2019-02-13 2018-12-31 13F MERCK & CO INC COM EQUITY 58933Y105 5,956 -5,136 -46.30 458 -42.17 0.1620
2018-11-14 2018-09-30 13F MERCK & CO INC COM EQUITY 58933Y105 11,092 4,417 66.17 792 94.12 0.1748
2018-08-10 2018-06-30 13F Merck & Co Inc New Com EQUITY 58933Y105 6,675 -16,590 -71.31 408 -58.37 0.1427
2018-05-22 2018-03-31 13F/A-1 MERCK & CO INC COM EQUITY 58933Y105 23,265 4,568 24.43 980 -13.04 0.1663
2018-05-21 2018-03-31 13F MERCK & CO INC COM EQUITY 58933Y105 979,805 961,108 980
2018-02-14 2017-12-31 13F MERCK & CO INC NEW COM EQUITY 58933Y105 18,697 18,697 1,127 0.1423
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.