Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionTrust Asset Management LLC
Latest Disclosed Ownership28,072 shares
Latest Disclosed Value $ 3,376,781
Trust Asset Management LLC ownership in MRK / Merck & Co., Inc.

On April 20, 2026 - Trust Asset Management LLC filed a 13F-HR form disclosing ownership of 28,072 shares of Merck & Co., Inc. (MX:MRK) valued at $3,376,781 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 13, 2026 disclosing 28,072 shares of Merck & Co., Inc.. This represents a change in shares of 0.00% 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)
2026-04-20 2026-03-31 13F MERCK COM 58933Y105 28,072 0 0.00 3,377 14.29 0.2418
2026-01-13 2025-12-31 13F MERCK COM 58933Y105 28,072 -1,069 -3.67 2,955 20.82 0.2016
2025-11-12 2025-09-30 13F MERCK COM 58933Y105 29,141 0 0.00 2,446 6.03 0.1681
2025-07-23 2025-06-30 13F MERCK COM 58933Y105 29,141 0 0.00 2,307 -11.82 0.1710
2025-05-12 2025-03-31 13F MERCK COM 58933Y105 29,141 13 0.04 2,616 -9.73 0.2144
2025-01-16 2024-12-31 13F MERCK COM 58933Y105 29,128 0 0.00 2,898 -12.40 0.2265
2024-11-13 2024-09-30 13F MERCK COM 58933Y105 29,128 0 0.00 3,308 -8.29 0.2638
2024-07-24 2024-06-30 13F MERCK COM 58933Y105 29,128 0 0.00 3,606 -6.17 0.3037
2024-05-15 2024-03-31 13F MERCK COM 58933Y105 29,128 0 0.00 3,843 21.04 0.3366
2024-02-02 2023-12-31 13F MERCK COM 58933Y105 29,128 0 0.00 3,176 5.90 0.3067
2023-11-08 2023-09-30 13F MERCK COM 58933Y105 29,128 0 0.00 2,999 -10.80 0.3232
2023-08-14 2023-06-30 13F MERCK COM 58933Y105 29,128 0 0.00 3,361 8.49 0.3485
2023-05-12 2023-03-31 13F MERCK COM 58933Y105 29,128 568 1.99 3,099 -2.21 0.3487
2023-02-01 2022-12-31 13F MERCK COM 58933Y105 28,560 0 0.00 3,169 28.78 0.3944
2022-11-14 2022-09-30 13F MERCK COM 58933Y105 28,560 2,024 7.63 2,460 1.69 0.3354
2022-08-10 2022-06-30 13F MERCK COM 58933Y105 26,536 1,248 4.94 2,419 16.58 0.3381
2022-05-10 2022-03-31 13F MERCK COM 58933Y105 25,288 766 3.12 2,075 10.43 0.2551
2022-01-31 2021-12-31 13F MERCK COM 58933Y105 24,522 0 0.00 1,879 2.01 0.2321
2021-10-29 2021-09-30 13F MERCK COM 58933Y105 24,522 1,618 7.06 1,842 3.43 0.2535
2021-07-19 2021-06-30 13F MERCK COM 58933Y105 22,904 2,503 12.27 1,781 13.22 0.2418
2021-04-21 2021-03-31 13F MERCK & CO. COM 58933Y105 20,401 3,615 21.54 1,573 14.57 0.2091
2021-01-27 2020-12-31 13F MERCK & CO. COM 58933Y105 16,786 3,937 30.64 1,373 28.80 0.2086
2020-11-24 2020-09-30 13F/A-1 MERCK & CO. COM 58933Y105 12,849 5,707 79.91 1,066 93.12 0.1905
2020-10-28 2020-09-30 13F MERCK & CO. COM 58933Y105 12,849 5,707 1,066 197,572.0508
2020-07-20 2020-06-30 13F MERCK & CO. COM 58933Y105 7,142 7,142 552 0.1050
2016-02-08 2015-12-31 13F MERCK & CO. INC. COM 58933Y105 0 -6,944 -100.00 0 -100.00
2015-08-13 2015-06-30 13F MERCK & CO. INC. COM 58933Y105 6,944 -1 -0.01 395 -1.00 0.1783
2015-05-13 2015-03-31 13F MERCK & CO. INC. COM 58933Y105 6,945 0 0.00 399 1.27 0.1541
2015-02-13 2014-12-31 13F MERCK & CO INC NEW COM COM 58933Y105 6,945 6,945 394 0.1564
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.