Merck & Co., Inc.
BG ˙ BUL ˙ US58933Y1055
SecurityBG:6MK / Merck & Co., Inc.
InstitutionMcAdam, LLC
Latest Disclosed Ownership23,996 shares
Latest Disclosed Value $ 2,886,430
McAdam, LLC reports 16.97% increase in ownership of 6MK / Merck & Co., Inc.

On May 8, 2026 - McAdam, LLC filed a 13F-HR form disclosing ownership of 23,996 shares of Merck & Co., Inc. (BG:6MK) valued at $2,886,430 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 20,515 shares of Merck & Co., Inc.. This represents a change in shares of 16.97% 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)
2026-05-08 2026-03-31 13F MERCK COM 58933Y105 23,996 3,481 16.97 2,886 33.67 0.1300
2026-02-13 2025-12-31 13F MERCK COM 58933Y105 20,515 91 0.45 2,159 25.96 0.0988
2025-10-29 2025-09-30 13F MERCK COM 58933Y105 20,424 271 1.34 1,714 7.46 0.0845
2025-07-15 2025-06-30 13F MERCK COM 58933Y105 20,153 1,577 8.49 1,595 -4.32 0.0873
2025-05-21 2025-03-31 13F MERCK COM 58933Y105 18,576 -88 -0.47 1,667 -10.18 0.1032
2025-01-24 2024-12-31 13F MERCK COM 58933Y105 18,664 713 3.97 1,857 -8.93 0.1013
2024-10-22 2024-09-30 13F MERCK COM 58933Y105 17,951 1,218 7.28 2,038 -1.59 0.1144
2024-07-24 2024-06-30 13F MERCK COM 58933Y105 16,733 578 3.58 2,072 -2.82 0.1246
2024-04-23 2024-03-31 13F MERCK COM 58933Y105 16,155 7 0.04 2,132 21.08 0.1367
2024-02-05 2023-12-31 13F MERCK COM 58933Y105 16,148 767 4.99 1,760 11.18 0.1270
2023-10-31 2023-09-30 13F MERCK COM 58933Y105 15,381 765 5.23 1,584 -6.11 0.1298
2023-08-02 2023-06-30 13F MERCK COM 58933Y105 14,616 5,167 54.68 1,687 67.76 0.1392
2023-04-24 2023-03-31 13F MERCK COM 58933Y105 9,449 5,097 117.12 1,005 0.0905
2023-01-27 2022-12-31 13F MERCK COM 58933Y105 4,352 -3,275 -42.94 0 -100.00 0.0329
2022-10-24 2022-09-30 13F MERCK COM 58933Y105 7,627 2,779 57.32 657 48.64 0.0712
2022-07-15 2022-06-30 13F MERCK COM 58933Y105 4,848 574 13.43 442 25.93 0.0467
2022-04-07 2022-03-31 13F MERCK COM 58933Y105 4,274 -78 -1.79 351 5.09 0.0332
2022-01-07 2021-12-31 13F MERCK COM 58933Y105 4,352 205 4.94 334 7.40 0.0329
2021-10-05 2021-09-30 13F MERCK COM 58933Y105 4,147 -231 -5.28 311 -7.72 0.0345
2021-08-02 2021-06-30 13F MERCK COM 58933Y105 4,378 1,163 36.17 337 35.89 0.0382
2021-04-26 2021-03-31 13F MERCK & CO. COM 58933Y105 3,215 359 12.57 248 2.06 0.0350
2021-01-12 2020-12-31 13F MERCK & CO. COM 58933Y105 2,856 2,856 243 0.0372
2019-01-30 2018-12-31 13F MERCK COM 58933Y105 0 -1,352 -100.00 0 -100.00
2018-10-10 2018-09-30 13F MERCK COM 58933Y105 1,352 390 40.54 97 67.24 0.0356
2018-08-22 2018-06-30 13F MERCK COM 58933Y105 962 256 36.26 58 52.63 0.0236
2018-04-24 2018-03-31 13F MERCK COM 58933Y105 706 706 38 0.0174
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.