Merck & Co., Inc.
BG ˙ BUL ˙ US58933Y1055
SecurityBG:6MK / Merck & Co., Inc.
InstitutionAffinity Capital Advisors, LLC
Latest Disclosed Ownership4,877 shares
Latest Disclosed Value $ 586,654
Affinity Capital Advisors, LLC reports 3.11% increase in ownership of 6MK / Merck & Co., Inc.

On April 13, 2026 - Affinity Capital Advisors, LLC filed a 13F-HR form disclosing ownership of 4,877 shares of Merck & Co., Inc. (BG:6MK) valued at $586,654 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 9, 2026 disclosing 4,730 shares of Merck & Co., Inc.. This represents a change in shares of 3.11% 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)
2026-04-13 2026-03-31 13F MERCK COM 58933Y105 4,877 147 3.11 587 17.91 0.0823
2026-01-09 2025-12-31 13F MERCK COM 58933Y105 4,730 824 21.10 498 42.41 0.0689
2025-10-09 2025-09-30 13F MERCK COM 58933Y105 3,906 -10 -0.26 350 12.94 0.0537
2025-07-09 2025-06-30 13F MERCK COM 58933Y105 3,916 -11 -0.28 310 -0.32 0.0533
2025-04-17 2025-03-31 13F MERCK COM 58933Y105 3,927 -50 -1.26 311 -22.69 0.0616
2025-01-14 2024-12-31 13F MERCK COM 58933Y105 3,977 -102 -2.50 402 -13.39 0.0756
2024-10-07 2024-09-30 13F MERCK COM 58933Y105 4,079 249 6.50 463 -2.32 0.0897
2024-08-14 2024-06-30 13F MERCK COM 58933Y105 3,830 0 0.00 474 -6.14 0.0996
2024-04-12 2024-03-31 13F MERCK COM 58933Y105 3,830 -165 -4.13 505 16.09 0.1126
2024-01-11 2023-12-31 13F MERCK COM 58933Y105 3,995 -35 -0.87 436 5.07 0.1062
2023-10-11 2023-09-30 13F MERCK COM 58933Y105 4,030 -88 -2.14 415 -12.84 0.1139
2023-07-14 2023-06-30 13F MERCK COM 58933Y105 4,118 43 1.06 475 9.70 0.1288
2023-04-11 2023-03-31 13F MERCK COM 58933Y105 4,075 0 0.00 434 -4.20 0.1349
2023-01-19 2022-12-31 13F MERCK COM 58933Y105 4,075 -38 -0.92 452 27.68 0.1550
2022-10-12 2022-09-30 13F MERCK COM 58933Y105 4,113 1 0.02 354 -5.60 0.1238
2022-07-11 2022-06-30 13F MERCK COM 58933Y105 4,112 -36 -0.87 375 10.29 0.1277
2022-04-19 2022-03-31 13F MERCK COM 58933Y105 4,148 -108 -2.54 340 4.29 0.1063
2022-01-31 2021-12-31 13F MERCK COM 58933Y105 4,256 21 0.50 326 2.52 0.0984
2021-10-28 2021-09-30 13F MERCK COM 58933Y105 4,235 -2,078 -32.92 318 -35.23 0.1066
2021-08-13 2021-06-30 13F MERCK COM 58933Y105 6,313 0 0.00 491 0.82 0.1664
2021-04-19 2021-03-31 13F MERCK & CO. COM 58933Y105 6,313 -101 -1.57 487 -7.24 0.1785
2021-01-27 2020-12-31 13F MERCK & CO. COM 58933Y105 6,414 0 0.00 525 -1.32 0.2133
2020-11-13 2020-09-30 13F MERCK & CO. COM 58933Y105 6,414 35 0.55 532 7.91 0.3011
2020-07-16 2020-06-30 13F MERCK & CO. COM 58933Y105 6,379 -220 -3.33 493 -10.53 0.3223
2020-04-23 2020-03-31 13F MERCK & CO. COM 58933Y105 6,599 -1,166 -15.02 551 -21.95 0.4028
2020-04-23 2019-12-31 13F MERCK & CO. COM 58933Y105 7,765 7,765 706 0.4646
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.