Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionTodd Asset Management Llc
Latest Disclosed Ownership1,880 shares
Latest Disclosed Value $ 226,145
Todd Asset Management Llc ownership in MRK / Merck & Co., Inc.

On May 12, 2026 - Todd Asset Management Llc filed a 13F-HR form disclosing ownership of 1,880 shares of Merck & Co., Inc. (MX:MRK) valued at $226,145 USD as of March 31, 2026. The entity filed a previous 13F-HR on May 12, 2025 disclosing 0 shares of Merck & Co., Inc..

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 1,880 1,880 226 0.0044
2025-05-12 2025-03-31 13F MERCK COM 58933Y105 0 -214,765 -100.00 0 -100.00
2025-02-04 2024-12-31 13F MERCK COM 58933Y105 214,765 -88,022 -29.07 21,365 -37.87 0.5118
2024-11-13 2024-09-30 13F MERCK COM 58933Y105 302,787 -1,808 -0.59 34,384 -8.82 0.7999
2024-08-14 2024-06-30 13F MERCK CS 58933Y105 304,595 29,045 10.54 37,709 3.71 0.7830
2024-05-15 2024-03-31 13F MERCK CS 58933Y105 275,550 -17,882 -6.09 36,359 13.66 0.7433
2024-02-06 2023-12-31 13F MERCK CS 58933Y105 293,432 -203,119 -40.91 31,990 -37.42 0.7052
2023-11-02 2023-09-30 13F MERCK CS 58933Y105 496,551 -4,644 -0.93 51,120 -11.61 1.2123
2023-08-01 2023-06-30 13F MERCK CS 58933Y105 501,195 499,315 26,559.31 57,833 28,816.00 1.3470
2023-05-09 2023-03-31 13F MERCK CS 58933Y105 1,880 0 0.00 200 -3.85 0.0048
2023-02-02 2022-12-31 13F MERCK CS 58933Y105 1,880 1,880 209 0.0051
2020-05-07 2020-03-31 13F MERCK CS 58933Y105 0 -186,016 -100.00 0 -100.00
2020-01-30 2019-12-31 13F MERCK CS 58933Y105 186,016 217 0.12 16,918 8.16 0.4196
2019-11-12 2019-09-30 13F MERCK CS 58933Y105 185,799 4,018 2.21 15,641 2.62 0.4283
2019-08-06 2019-06-30 13F MERCK CS 58933Y105 181,781 1,410 0.78 15,242 1.61 0.4169
2019-05-08 2019-03-31 13F MERCK CS 58933Y105 180,371 180,371 15,001 0.4236
2018-11-09 2018-09-30 13F MERCK COM 58933Y105 0 -3,455 -100.00 0 -100.00
2018-08-08 2018-06-30 13F MERCK COM 58933Y105 3,455 3,455 210 0.0059
2018-02-02 2017-12-31 13F MERCK COM 58933Y105 0 -3,308 -100.00 0 -100.00
2017-11-06 2017-09-30 13F MERCK COM 58933Y105 3,308 40 1.22 212 1.44 0.0059
2017-08-09 2017-06-30 13F MERCK Com 58933Y105 3,268 3,268 209 0.0060
2016-05-09 2016-03-31 13F MERCK common 58933Y105 0 -486,292 -100.00 0 -100.00
2016-02-08 2015-12-31 13F MERCK common 58933Y105 486,292 -20,295 -4.01 25,686 2.66 0.7786
2015-11-06 2015-09-30 13F MERCK common 58933Y105 506,587 -14,077 -2.70 25,021 -15.59 0.7834
2015-08-04 2015-06-30 13F MERCK common 58933Y105 520,664 -3,193 -0.61 29,641 -1.56 0.8063
2015-04-27 2015-03-31 13F MERCK common 58933Y105 523,857 -2,225 -0.42 30,111 0.79 0.8393
2015-02-10 2014-12-31 13F MERCK common 58933Y105 526,082 -1,109 -0.21 29,876 -4.40 0.8318
2014-10-28 2014-09-30 13F MERCK Common 58933Y105 527,191 -54,617 -9.39 31,252 -7.15 0.8955
2014-08-08 2014-06-30 13F MERCK Common 58933Y105 581,808 -71,617 -10.96 33,658 -9.27 0.9570
2014-05-07 2014-03-31 13F MERCK Common 58933Y105 653,425 -46,858 -6.69 37,095 5.84 1.0731
2014-01-31 2013-12-31 13F MERCK COMMON 58933Y105 700,283 -60,437 -7.94 35,049 -3.23 1.0162
2013-10-23 2013-09-30 13F MERCK COMMON 58933Y105 760,720 -9,862 -1.28 36,217 1.18 1.1093
2013-08-02 2013-06-30 13F MERCK COMMON 58933Y105 770,582 770,582 35,794 1.1685
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.