Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionMalaga Cove Capital, LLC
Latest Disclosed Ownership28,691 shares
Latest Disclosed Value $ 3,451,240
Malaga Cove Capital, LLC reports 2.39% decrease in ownership of MRK / Merck & Co., Inc.

On May 7, 2026 - Malaga Cove Capital, LLC filed a 13F-HR form disclosing ownership of 28,691 shares of Merck & Co., Inc. (MX:MRK) valued at $3,451,240 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 29,395 shares of Merck & Co., Inc.. This represents a change in shares of -2.39% 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 28,691 -704 -2.39 3,451 11.54 1.2402
2026-02-09 2025-12-31 13F MERCK COM 58933Y105 29,395 -1,586 -5.12 3,094 19.00 1.0711
2025-11-13 2025-09-30 13F MERCK COM 58933Y105 30,981 239 0.78 2,600 6.86 0.9435
2025-08-06 2025-06-30 13F MERCK COM 58933Y105 30,742 2,291 8.05 2,434 -4.70 0.9559
2025-05-09 2025-03-31 13F MERCK COM 58933Y105 28,451 2,698 10.48 2,554 -0.31 1.1037
2025-02-14 2024-12-31 13F MERCK COM 58933Y105 25,753 2,381 10.19 2,562 -3.50 1.0058
2024-10-31 2024-09-30 13F MERCK COM 58933Y105 23,372 933 4.16 2,654 -4.43 1.0676
2024-08-07 2024-06-30 13F MERCK COM 58933Y105 22,439 -129 -0.57 2,778 -6.72 1.1282
2024-05-07 2024-03-31 13F MERCK COM 58933Y105 22,568 -78 -0.34 2,978 20.62 1.2134
2024-02-06 2023-12-31 13F MERCK COM 58933Y105 22,646 -113 -0.50 2,469 5.34 1.0418
2023-10-31 2023-09-30 13F MERCK COM 58933Y105 22,759 -222 -0.97 2,343 -11.62 1.0818
2023-08-02 2023-06-30 13F MERCK COM 58933Y105 22,981 -31 -0.13 2,652 8.29 1.2252
2023-05-15 2023-03-31 13F MERCK COM 58933Y105 23,012 -113 -0.49 2,448 -4.56 1.2101
2023-02-09 2022-12-31 13F MERCK COM 58933Y105 23,125 -69 -0.30 2,566 28.44 1.3994
2022-11-07 2022-09-30 13F MERCK COM 58933Y105 23,194 0 0.00 1,997 -5.85 1.1383
2022-08-02 2022-06-30 13F MERCK COM 58933Y105 23,194 0 0.00 2,121 11.46 1.1839
2022-04-28 2022-03-31 13F MERCK COM 58933Y105 23,194 1,548 7.15 1,903 14.71 0.8651
2022-02-10 2021-12-31 13F MERCK COM 58933Y105 21,646 862 4.15 1,659 6.28 0.6489
2021-11-05 2021-09-30 13F MERCK COM 58933Y105 20,784 2,805 15.60 1,561 11.66 0.6432
2021-07-27 2021-06-30 13F MERCK COM 58933Y105 17,979 2,890 19.15 1,398 19.79 0.5959
2021-05-07 2021-03-31 13F MERCK & CO. COM 58933Y105 15,089 1,584 11.73 1,167 6.97 0.4982
2021-02-05 2020-12-31 13F MERCK & CO. COM 58933Y105 13,505 5,529 69.32 1,091 64.80 0.5129
2020-11-03 2020-09-30 13F MERCK & CO. COM 58933Y105 7,976 50 0.63 662 7.99 0.3856
2020-07-29 2020-06-30 13F MERCK & CO. COM 58933Y105 7,926 4,718 147.07 613 148.18 0.3743
2020-05-15 2020-03-31 13F MERCK & CO. COM 58933Y105 3,208 3,208 247 0.2028
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.