Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionMorton Capital Management LLC/CA
Latest Disclosed Ownership6,933 shares
Latest Disclosed Value $ 833,995
Morton Capital Management LLC/CA reports 4.20% decrease in ownership of MRK / Merck & Co., Inc.

On April 21, 2026 - Morton Capital Management LLC/CA filed a 13F-HR form disclosing ownership of 6,933 shares of Merck & Co., Inc. (MX:MRK) valued at $833,995 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 7,237 shares of Merck & Co., Inc.. This represents a change in shares of -4.20% 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)
2026-04-21 2026-03-31 13F MERCK COM 58933Y105 6,933 -304 -4.20 834 9.46 0.1241
2026-02-03 2025-12-31 13F MERCK COM 58933Y105 7,237 192 2.73 762 28.76 0.1170
2025-10-24 2025-09-30 13F MERCK COM 58933Y105 7,045 42 0.60 591 6.68 0.0970
2025-07-23 2025-06-30 13F MERCK COM 58933Y105 7,003 -423 -5.70 554 -16.82 0.0983
2025-04-17 2025-03-31 13F MERCK COM 58933Y105 7,426 67 0.91 667 -9.02 0.1288
2025-01-15 2024-12-31 13F MERCK COM 58933Y105 7,359 -8 -0.11 732 -12.44 0.1380
2024-10-09 2024-09-30 13F MERCK COM 58933Y105 7,367 578 8.51 837 -0.48 0.1647
2024-07-12 2024-06-30 13F MERCK COM 58933Y105 6,789 30 0.44 841 -5.72 0.1995
2024-04-12 2024-03-31 13F MERCK COM 58933Y105 6,759 211 3.22 892 24.96 0.2408
2024-01-18 2023-12-31 13F MERCK COM 58933Y105 6,548 -1,081 -14.17 714 -9.17 0.2121
2023-12-05 2023-09-30 13F MERCK COM 58933Y105 7,629 100 1.33 785 -9.56 0.2782
2023-12-05 2023-06-30 13F MERCK COM 58933Y105 7,529 1,000 15.32 869 25.07 0.2967
2023-12-05 2023-03-31 13F MERCK COM 58933Y105 6,529 4 0.06 695 -4.01 0.2457
2023-12-05 2022-12-31 13F MERCK COM 58933Y105 6,525 -503 -7.16 724 19.50 0.2826
2023-12-05 2022-09-30 13F MERCK COM 58933Y105 7,028 -445 -5.95 605 -11.16 0.2755
2023-12-05 2022-06-30 13F MERCK COM 58933Y105 7,473 45 0.61 681 11.82 0.2967
2023-12-05 2022-03-31 13F MERCK COM 58933Y105 7,428 206 2.85 609 10.13 0.2500
2023-12-05 2021-12-31 13F MERCK COM 58933Y105 7,222 7,222 553 0.2239
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.