Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionJMG Financial Group, Ltd.
Latest Disclosed Ownership2,777 shares
Latest Disclosed Value $ 334,012
JMG Financial Group, Ltd. reports 44.26% increase in ownership of MRK / Merck & Co., Inc.

On May 7, 2026 - JMG Financial Group, Ltd. filed a 13F-HR form disclosing ownership of 2,777 shares of Merck & Co., Inc. (MX:MRK) valued at $334,012 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 1,925 shares of Merck & Co., Inc.. This represents a change in shares of 44.26% 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 2,777 852 44.26 334 65.35 0.0092
2026-02-10 2025-12-31 13F Merck COM 58933Y105 1,925 1,925 203 0.0057
2025-05-05 2025-03-31 13F Merck COM 58933Y105 0 -2,033 -100.00 0 -100.00
2025-02-03 2024-12-31 13F Merck COM 58933Y105 2,033 0 0.00 202 -12.17 0.0069
2024-10-22 2024-09-30 13F Merck COM 58933Y105 2,033 -663 -24.59 231 -30.93 0.0079
2024-07-30 2024-06-30 13F Merck COM 58933Y105 2,696 0 0.00 334 -6.20 0.0125
2024-04-30 2024-03-31 13F Merck COM 58933Y105 2,696 -40 -1.46 356 19.13 0.0136
2024-02-02 2023-12-31 13F Merck COM 58933Y105 2,736 40 1.48 298 7.58 0.0125
2023-10-31 2023-09-30 13F Merck COM 58933Y105 2,696 663 32.61 278 0.0134
2023-07-25 2023-06-30 13F Merck COM 58933Y105 2,033 0 0.00 0 0.0110
2023-04-12 2023-03-31 13F Merck COM 58933Y105 2,033 -72 -3.42 0 0.0110
2023-01-27 2022-12-31 13F Merck COM 58933Y105 2,105 2,105 0 0.0128
2020-01-21 2019-12-31 13F Merck COM 58933Y105 0 -4,518 -100.00 0 -100.00
2019-10-24 2019-09-30 13F Merck COM 58933Y105 4,518 0 0.00 380 0.26 0.0398
2019-08-02 2019-06-30 13F Merck COM 58933Y105 4,518 0 0.00 379 0.80 0.0406
2019-05-13 2019-03-31 13F Merck COM 58933Y105 4,518 0 0.00 376 8.99 0.0438
2019-01-24 2018-12-31 13F Merck COM 58933Y105 4,518 -8 -0.18 345 7.48 0.0396
2018-11-06 2018-09-30 13F Merck COM 58933Y105 4,526 4,526 321 0.0336
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.