Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionEley Financial Management, Inc
Latest Disclosed Ownership15,938 shares
Latest Disclosed Value $ 1,917,241
Eley Financial Management, Inc reports 1.22% increase in ownership of MRK / Merck & Co., Inc.

On May 19, 2026 - Eley Financial Management, Inc filed a 13F-HR/A form disclosing ownership of 15,938 shares of Merck & Co., Inc. (MX:MRK) valued at $1,917,241 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 15,746 shares of Merck & Co., Inc.. This represents a change in shares of 1.22% 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)
2026-05-19 2026-03-31 13F/A-1 Merck&Co. COM 58933Y105 15,938 192 1.22 1,917 15.69 0.6920
2026-05-15 2026-03-31 13F Merck&Co. COM 58933Y105 14,876 -870 1,296 0.5194
2026-02-12 2025-12-31 13F Merck&Co. COM 58933Y105 15,746 301 1.95 1,657 27.85 0.5954
2025-11-12 2025-09-30 13F Merck&Co. COM 58933Y105 15,445 85 0.55 1,296 6.67 0.4669
2025-08-12 2025-06-30 13F Merck&Co. COM 58933Y105 15,360 484 3.25 1,216 -6.25 0.4667
2025-05-13 2025-03-31 13F Merck&Co. COM 58933Y105 14,876 101 0.68 1,296 -11.78 0.5194
2025-02-13 2024-12-31 13F Merck&Co. COM 58933Y105 14,775 3,433 30.27 1,470 14.14 0.5726
2024-11-12 2024-09-30 13F Merck&Co. COM 58933Y105 11,342 -4 -0.04 1,288 -8.33 0.5184
2024-08-09 2024-06-30 13F Merck&Co. COM 58933Y105 11,346 63 0.56 1,405 -5.65 0.5953
2024-05-14 2024-03-31 13F Merck&Co. COM 58933Y105 11,283 -3,435 -23.34 1,489 -7.23 0.6411
2024-02-02 2023-12-31 13F Merck&Co. COM 58933Y105 14,718 227 1.57 1,605 6.15 0.7520
2023-10-31 2023-09-30 13F Merck&Co. COM 58933Y105 14,491 -10 -0.07 1,511 -9.68 0.7700
2023-08-03 2023-06-30 13F Merck COM 58933Y105 14,501 -77 -0.53 1,673 7.94 0.8149
2023-05-11 2023-03-31 13F Merck COM 58933Y105 14,578 -226 -1.53 1,551 -5.60 0.8015
2023-05-12 2022-12-31 13F Merck COM 58933Y105 14,804 14,804 1,643 0.8848
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.