Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionSILVER OAK SECURITIES, Inc
Latest Disclosed Ownership9,641 shares
Latest Disclosed Value $ 1,159,730
SILVER OAK SECURITIES, Inc reports 8.19% decrease in ownership of MRK / Merck & Co., Inc.

On April 20, 2026 - SILVER OAK SECURITIES, Inc filed a 13F-HR form disclosing ownership of 9,641 shares of Merck & Co., Inc. (MX:MRK) valued at $1,159,730 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 15, 2026 disclosing 10,501 shares of Merck & Co., Inc.. This represents a change in shares of -8.19% 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)
2026-04-20 2026-03-31 13F MERCK COM 58933Y105 9,641 -860 -8.19 1,160 4.13 0.0848
2026-01-15 2025-12-31 13F MERCK COM 58933Y105 10,501 160 1.55 1,114 28.37 0.0753
2025-10-21 2025-09-30 13F MERCK COM 58933Y105 10,341 1,638 18.82 868 26.02 0.0650
2025-07-11 2025-06-30 13F MERCK COM 58933Y105 8,703 -2,536 -22.56 689 -31.34 0.0560
2025-04-29 2025-03-31 13F/A-1 MERCK COM 58933Y105 11,239 -783 -6.51 1,003 -15.23 0.0920
2025-04-21 2025-03-31 13F MERCK COM 58933Y105 11,239 -783 1,003 0.0156
2025-01-27 2024-12-31 13F MERCK COM 58933Y105 12,022 3,002 33.28 1,183 25.88 0.1099
2024-10-23 2024-09-30 13F MERCK COM 58933Y105 9,020 2,243 33.10 939 11.92 0.0992
2024-07-12 2024-06-30 13F MERCK COM 58933Y105 6,777 1,038 18.09 839 10.83 0.1258
2024-05-10 2024-03-31 13F MERCK COM 58933Y105 5,739 -1,019 -15.08 757 2.85 0.1159
2024-02-05 2023-12-31 13F MERCK COM 58933Y105 6,758 1,950 40.56 737 48.69 0.0989
2023-11-20 2023-09-30 13F/A-2 MERCK COM 58933Y105 4,808 714 17.44 495 0.1076
2023-10-20 2023-09-30 13F/A-1 MERCK COM 58933Y105 4,094 0 0 0.0759
2023-10-18 2023-09-30 13F MERCK COM 58933Y105 4,094 0 0 0.0759
2023-08-02 2023-06-30 13F MERCK COM 58933Y105 4,094 493 13.69 0 0.0759
2023-05-05 2023-03-31 13F Merck COM 58933Y105 3,601 446 14.14 0 0.0629
2023-02-02 2022-12-31 13F Merck COM 58933Y105 3,155 -1,653 -34.38 0 -100.00 0.0657
2023-10-23 2022-09-30 13F/A-2 MERCK COM 58933Y105 4,808 1,650 52.25 495 73.68 0.1076
2022-10-20 2022-09-30 13F Merck COM 58933Y105 3,142 -16 271 0.0604
2022-08-15 2022-06-30 13F Merck COM 58933Y105 3,158 3 0.10 285 3.64 0.0639
2022-05-10 2022-03-31 13F MERCK & CO. COM 58933Y105 3,155 3,155 275 0.0559
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.