머크 앤 컴퍼니(Merck & Co., Inc.)
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionEmerald Advisors, LLC
Latest Disclosed Ownership15,173 shares
Latest Disclosed Value $ 1,825,157
Emerald Advisors, LLC reports 2.37% increase in ownership of MRK / Merck & Co., Inc.

On April 23, 2026 - Emerald Advisors, LLC filed a 13F-HR form disclosing ownership of 15,173 shares of Merck & Co., Inc. (MX:MRK) valued at $1,825,157 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 27, 2026 disclosing 14,822 shares of Merck & Co., Inc.. This represents a change in shares of 2.37% 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)
2026-04-23 2026-03-31 13F MERCK COM 58933Y105 15,173 351 2.37 1,825 16.99 0.2260
2026-01-27 2025-12-31 13F MERCK COM 58933Y105 14,822 349 2.41 1,560 28.50 0.2123
2025-10-29 2025-09-30 13F MERCK COM 58933Y105 14,473 1,489 11.47 1,215 18.21 0.1612
2025-07-17 2025-06-30 13F MERCK COM 58933Y105 12,984 7,845 152.66 1,028 122.78 0.1318
2025-04-25 2025-03-31 13F MERCK COM 58933Y105 5,139 1,138 28.44 461 16.12 0.0613
2025-02-03 2024-12-31 13F MERCK COM 58933Y105 4,001 13 0.33 398 -8.31 0.0548
2024-10-31 2024-09-30 13F MERCK COM 58933Y105 3,988 -834 -17.30 433 -27.47 0.0627
2024-07-15 2024-06-30 13F MERCK COM 58933Y105 4,822 -3,524 -42.22 597 -45.78 0.0907
2024-04-25 2024-03-31 13F MERCK COM 58933Y105 8,346 105 1.27 1,101 22.61 0.1960
2024-01-24 2023-12-31 13F MERCK COM 58933Y105 8,241 283 3.56 898 9.65 0.1712
2023-10-13 2023-09-30 13F MERCK COM 58933Y105 7,958 1,103 16.09 819 3.54 0.1901
2023-08-03 2023-06-30 13F MERCK COM 58933Y105 6,855 446 6.96 791 16.15 0.1900
2023-04-07 2023-03-31 13F MERCK COM 58933Y105 6,409 -916 -12.51 682 -16.13 0.1758
2023-01-20 2022-12-31 13F MERCK COM 58933Y105 7,325 -1,242 -14.50 813 10.03 0.2251
2022-10-12 2022-09-30 13F MERCK COM 58933Y105 8,567 -91 -1.05 738 -6.46 0.2142
2022-08-01 2022-06-30 13F MERCK COM 58933Y105 8,658 -1,143 -11.66 789 -1.87 0.2204
2022-04-26 2022-03-31 13F MERCK COM 58933Y105 9,801 404 4.30 804 11.67 0.1889
2022-01-19 2021-12-31 13F MERCK COM 58933Y105 9,397 1,147 13.90 720 16.13 0.1736
2021-11-02 2021-09-30 13F MERCK COM 58933Y105 8,250 508 6.56 620 2.99 0.1769
2021-08-02 2021-06-30 13F MERCK COM 58933Y105 7,742 757 10.84 602 11.90 0.1880
2021-04-20 2021-03-31 13F MERCK & CO. COM 58933Y105 6,985 246 3.65 538 -2.36 0.1947
2021-02-05 2020-12-31 13F MERCK & CO. COM 58933Y105 6,739 781 13.11 551 11.54 0.1898
2020-11-10 2020-09-30 13F MERCK & CO. COM 58933Y105 5,958 188 3.26 494 10.76 0.1890
2020-08-10 2020-06-30 13F MERCK & CO. COM 58933Y105 5,770 415 7.75 446 9.05 0.1968
2020-05-14 2020-03-31 13F MERCK & CO. COM 58933Y105 5,355 5,355 409 0.1849
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.