Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionBaker Chad R
Latest Disclosed Ownership13,950 shares
Latest Disclosed Value $ 1,678,046
Baker Chad R reports 11.15% decrease in ownership of MRK / Merck & Co., Inc.

On April 17, 2026 - Baker Chad R filed a 13F-HR form disclosing ownership of 13,950 shares of Merck & Co., Inc. (MX:MRK) valued at $1,678,046 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 13, 2026 disclosing 15,700 shares of Merck & Co., Inc.. This represents a change in shares of -11.15% 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)
2026-04-17 2026-03-31 13F MERCK Common Stock 58933Y105 13,950 -1,750 -11.15 1,678 0.78 0.3165
2026-01-13 2025-12-31 13F MERCK Common Stock 58933Y105 15,700 0 0.00 1,665 26.42 0.2987
2025-10-16 2025-09-30 13F MERCK Common Stock 58933Y105 15,700 0 0.00 1,318 6.04 0.2268
2025-07-11 2025-06-30 13F MERCK Common Stock 58933Y105 15,700 0 0.00 1,243 -11.85 0.2309
2025-04-16 2025-03-31 13F MERCK Common Stock 58933Y105 15,700 -4,850 -23.60 1,409 -31.07 0.2870
2025-01-15 2024-12-31 13F MERCK Common Stock 58933Y105 20,550 -1,150 -5.30 2,044 -17.05 0.4002
2024-10-18 2024-09-30 13F MERCK Common Stock 58933Y105 21,700 0 0.00 2,464 -8.27 0.4841
2024-07-22 2024-06-30 13F MERCK Common Stock 58933Y105 21,700 0 0.00 2,686 -6.18 0.5608
2024-04-17 2024-03-31 13F MERCK Common Stock 58933Y105 21,700 0 0.00 2,863 21.06 0.6098
2024-01-22 2023-12-31 13F MERCK Common Stock 58933Y105 21,700 0 0.00 2,366 5.86 0.5324
2023-10-17 2023-09-30 13F MERCK Common Stock 58933Y105 21,700 0 0.00 2,234 -10.75 0.5640
2023-07-18 2023-06-30 13F MERCK Common Stock 58933Y105 21,700 0 0.00 2,504 8.45 0.5917
2023-04-27 2023-03-31 13F MERCK Common Stock 58933Y105 21,700 0 0.00 2,309 115,300.00 0.5864
2023-02-10 2022-12-31 13F MERCK Common Stock 58933Y105 21,700 0 0.00 2 -99.89 0.6754
2022-11-03 2022-09-30 13F MERCK Common Stock 58933Y105 21,700 0 0.00 1,869 -5.51 0.5323
2022-08-11 2022-06-30 13F MERCK Common Stock 58933Y105 21,700 0 0.00 1,978 11.12 0.5501
2022-05-10 2022-03-31 13F MERCK Common Stock 58933Y105 21,700 0 0.00 1,780 7.04 0.2867
2022-02-08 2021-12-31 13F MERCK Common Stock 58933Y105 21,700 0 0.00 1,663 2.02 0.3442
2021-11-08 2021-09-30 13F MERCK Common Stock 58933Y105 21,700 0 0.00 1,630 -3.44 0.3656
2021-08-04 2021-06-30 13F MERCK Common Stock 58933Y105 21,700 -8,877 -29.03 1,688 -28.38 0.3795
2021-05-11 2021-03-31 13F MERCK Common Stock 58933Y105 30,577 0 0.00 2,357 -5.76 0.5647
2021-02-10 2020-12-31 13F MERCK Common Stock 58933Y105 30,577 -11,086 -26.61 2,501 -27.63 0.6100
2020-11-09 2020-09-30 13F MERCK Common Stock 58933Y105 41,663 -37 -0.09 3,456 7.16 0.9311
2020-08-04 2020-06-30 13F MERCK Common Stock 58933Y105 41,700 0 0.00 3,225 0.53 0.9708
2020-05-01 2020-03-31 13F MERCK Common Stock 58933Y105 41,700 -20,000 -32.41 3,208 -42.84 1.2455
2020-02-12 2019-12-31 13F MERCK Common Stock 58933Y105 61,700 0 0.00 5,612 8.05 1.8637
2019-11-12 2019-09-30 13F MERCK Common Stock 58933Y105 61,700 0 0.00 5,194 0.39 1.8459
2019-08-14 2019-06-30 13F MERCK Common Stock 58933Y105 61,700 0 0.00 5,174 0.82 1.8047
2019-05-07 2019-03-31 13F MERCK Common Stock 58933Y105 61,700 0 0.00 5,132 8.87 1.8575
2019-02-08 2018-12-31 13F MERCK Common Stock 58933Y105 61,700 -13,775 -18.25 4,714 -11.95 2.0333
2018-11-15 2018-09-30 13F MERCK Common Stock 58933Y105 75,475 0 0.00 5,354 16.87 1.9518
2018-08-13 2018-06-30 13F MERCK Common Stock 58933Y105 75,475 0 0.00 4,581 11.43 1.8307
2018-05-14 2018-03-31 13F MERCK Common Stock 58933Y105 75,475 0 0.00 4,111 -3.20 1.6221
2018-02-13 2017-12-31 13F MERCK Common Stock 58933Y105 75,475 0 0.00 4,247 -12.12 1.6772
2017-11-15 2017-09-30 13F MERCK Common Stock 58933Y105 75,475 0 0.00 4,833 -0.08 1.9009
2017-08-14 2017-06-30 13F MERCK Common Stock 58933Y105 75,475 0 0.00 4,837 0.85 1.9151
2017-05-05 2017-03-31 13F MERCK Common Stock 58933Y105 75,475 0 0.00 4,796 7.95 1.9504
2017-02-03 2016-12-31 13F MERCK Common Stock 58933Y105 75,475 0 0.00 4,443 -5.67 1.9630
2016-10-24 2016-09-30 13F MERCK Common Stock 58933Y105 75,475 -5,225 -6.47 4,710 1.31 2.0252
2016-07-12 2016-06-30 13F MERCK Common Stock 58933Y105 80,700 0 0.00 4,649 8.88 2.0739
2016-04-20 2016-03-31 13F MERCK Common Stock 58933Y105 80,700 0 0.00 4,270 0.16 1.9390
2016-02-10 2015-12-31 13F MERCK Common Stock 58933Y105 80,700 80,700 4,263 1.9047
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.