Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionDoheny Asset Management /ca
Latest Disclosed Ownership11,940 shares
Latest Disclosed Value $ 1,436
Doheny Asset Management /ca ownership in MRK / Merck & Co., Inc.

On May 7, 2026 - Doheny Asset Management /ca filed a 13F-HR form disclosing ownership of 11,940 shares of Merck & Co., Inc. (MX:MRK) valued at $1,436 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 11,940 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)
2026-05-07 2026-03-31 13F MERCK COM 58933Y105 11,940 0 0.00 1 0.00 0.9361
2026-02-11 2025-12-31 13F MERCK COM 58933Y105 11,940 0 0.00 1 0.00 0.7675
2025-11-12 2025-09-30 13F MERCK COM 58933Y105 11,940 -200 -1.65 1 0.6357
2025-08-14 2025-06-30 13F MERCK COM 58933Y105 12,140 0 0.00 1 -100.00 0.6733
2025-05-14 2025-03-31 13F MERCK COM 58933Y105 12,140 0 0.00 1 0.00 0.8535
2025-02-10 2024-12-31 13F MERCK COM 58933Y105 12,140 -2,500 -17.08 1 0.00 0.9016
2024-11-14 2024-09-30 13F MERCK COM 58933Y105 14,640 0 0.00 2 0.00 1.1355
2024-08-15 2024-06-30 13F/A-1 MERCK COM 58933Y105 14,640 -217 -1.46 2 0.00 1.2908
2024-08-07 2024-06-30 13F MERCK COM 58933Y105 27,305 12,448 2 1.9950
2024-05-08 2024-03-31 13F MERCK COM 58933Y105 14,857 1,745 13.31 2 0.00 1.6110
2024-02-06 2023-12-31 13F MERCK COM 58933Y105 13,112 0 0.00 1 0.00 1.3996
2023-11-08 2023-09-30 13F MERCK COM 58933Y105 13,112 0 0.00 1 0.00 1.3087
2023-08-08 2023-06-30 13F MERCK COM 58933Y105 13,112 0 0.00 2 0.00 1.2968
2023-05-16 2023-03-31 13F MERCK COM 58933Y105 13,112 -1,878 -12.53 1 0.00 1.2526
2023-02-14 2022-12-31 13F MERCK COM 58933Y105 14,990 1,385 10.18 2 -99.91 1.9291
2022-11-10 2022-09-30 13F MERCK COM 58933Y105 13,605 -1,790 -11.63 1,172 -7.21 1.1742
2022-05-16 2022-03-31 13F MERCK COM 58933Y105 15,395 -400 -2.53 1,263 4.29 0.9215
2022-02-15 2021-12-31 13F MERCK COM 58933Y105 15,795 -1,100 -6.51 1,211 -4.57 0.8489
2021-10-22 2021-09-30 13F MERCK COM 58933Y105 16,895 -1,995 -10.56 1,269 -13.61 0.9075
2021-08-10 2021-06-30 13F MERCK COM 58933Y105 18,890 -6,535 -25.70 1,469 -25.05 0.9457
2021-05-17 2021-03-31 13F MERCK COM 58933Y105 25,425 340 1.36 1,960 -4.48 1.3286
2021-02-26 2020-12-31 13F MERCK COM 58933Y105 25,085 -3,155 -11.17 2,052 -12.42 1.4262
2020-11-12 2020-09-30 13F/A-1 MERCK COM 58933Y105 28,240 935 3.42 2,343 10.99 1.9362
2020-11-12 2020-09-30 13F MERCK COM 58933Y105 30,855 3,550 2,806 2,223,701.5200
2020-08-18 2020-06-30 13F/A-1 MERCK COM 58933Y105 27,305 -3,550 -11.51 2,111 -24.77 1.9950
2020-08-17 2020-06-30 13F MERCK COM 58933Y105 30,855 0 2,806 2,223,701.5200
2020-05-14 2020-03-31 13F MERCK COM 58933Y105 30,855 0 0.00 2,806 0.00 2.2237
2020-02-11 2019-12-31 13F MERCK COM 58933Y105 30,855 -200 -0.64 2,806 7.35 2.2237
2019-11-15 2019-09-30 13F MERCK COM 58933Y105 31,055 -100 -0.32 2,614 0.08 2.2692
2019-08-14 2019-06-30 13F MERCK COM 58933Y105 31,155 -400 -1.27 2,612 -0.46 2.1848
2019-05-14 2019-03-31 13F MERCK COM 58933Y105 31,555 -15,250 -32.58 2,624 -26.62 2.2314
2019-02-13 2018-12-31 13F MERCK COM 58933Y105 46,805 -4,990 -9.63 3,576 -2.67 2.6180
2018-11-14 2018-09-30 13F MERCK COM 58933Y105 51,795 -6,750 -11.53 3,674 3.38 1.9226
2018-08-10 2018-06-30 13F MERCK COM 58933Y105 58,545 5,750 10.89 3,554 23.57 1.9266
2018-05-16 2018-03-31 13F MERCK COM 58933Y105 52,795 -1,540 -2.83 2,876 -5.92 1.5098
2018-02-15 2017-12-31 13F MERCK COM 58933Y105 54,335 -3,950 -6.78 3,057 -18.09 1.4248
2017-11-13 2017-09-30 13F MERCK & CO INC COM 58933Y105 58,285 -120 -0.21 3,732 -0.29 1.7164
2017-08-14 2017-06-30 13F MERCK COM 58933Y105 58,405 -100 -0.17 3,743 0.70 1.7553
2017-05-10 2017-03-31 13F MERCK COM 58933Y105 58,505 -475 -0.81 3,717 7.06 1.6791
2017-02-08 2016-12-31 13F MERCK COM 58933Y105 58,980 225 0.38 3,472 -5.32 1.6812
2016-11-15 2016-09-30 13F MERCK COM 58933Y105 58,755 -700 -1.18 3,667 7.07 1.8837
2016-08-10 2016-06-30 13F MERCK and COM 58933Y105 59,455 -800 -1.33 3,425 7.43 1.7195
2016-05-13 2016-03-31 13F MERCK and COM 58933Y105 60,255 -600 -0.99 3,188 -0.81 1.6439
2016-02-09 2015-12-31 13F MERCK and COM 58933Y105 60,855 -500 -0.81 3,214 6.07 1.5707
2015-11-17 2015-09-30 13F MERCK and COM 58933Y105 61,355 -435 -0.70 3,030 -13.87 1.5703
2015-08-14 2015-06-30 13F MERCK and COM 58933Y105 61,790 3,660 6.30 3,518 5.30 1.5731
2015-05-15 2015-03-31 13F MERCK and COM 58933Y105 58,130 -400 -0.68 3,341 0.51 1.5489
2015-02-12 2014-12-31 13F MERCK and COM 58933Y105 58,530 3,350 6.07 3,324 1.62 1.5888
2014-11-13 2014-09-30 13F MERCK and COM 58933Y105 55,180 -4,140 -6.98 3,271 -4.69 1.6360
2014-08-07 2014-06-30 13F MERCK and COM 58933Y105 59,320 -100 -0.17 3,432 1.75 1.6243
2014-05-09 2014-03-31 13F MERCK and COM 58933Y105 59,420 -555 -0.93 3,373 12.36 1.7336
2014-02-13 2013-12-31 13F MERCK and COM 58933Y105 59,975 -380 -0.63 3,002 4.49 1.5818
2013-11-13 2013-09-30 13F MERCK and COM 58933Y105 60,355 -990 -1.61 2,873 0.84 1.5803
2013-08-16 2013-06-30 13F MERCK and COM 58933Y105 61,345 61,345 2,849 1.6266
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.