Merck & Co., Inc.
BG ˙ BUL ˙ US58933Y1055
SecurityBG:6MK / Merck & Co., Inc.
InstitutionBerkeley, Inc
Latest Disclosed Ownership3,583 shares
Latest Disclosed Value $ 431,005
Berkeley, Inc ownership in 6MK / Merck & Co., Inc.

On April 24, 2026 - Berkeley, Inc filed a 13F-HR form disclosing ownership of 3,583 shares of Merck & Co., Inc. (BG:6MK) valued at $431,005 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 3,583 shares of Merck & Co., Inc.. This represents a change in shares of 0.00% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-04-24 2026-03-31 13F MERCK COM 58933Y105 3,583 0 0.00 431 14.32 0.1446
2026-01-26 2025-12-31 13F MERCK COM 58933Y105 3,583 10 0.28 377 26.09 0.1199
2025-10-30 2025-09-30 13F MERCK COM 58933Y105 3,573 -8,586 -70.61 300 -68.92 0.0965
2025-08-11 2025-06-30 13F MERCK COM 58933Y105 12,159 -9,761 -44.53 962 -51.09 0.3455
2025-05-01 2025-03-31 13F MERCK COM 58933Y105 21,920 -6,273 -22.25 1,968 -29.85 0.9232
2025-03-28 2024-12-31 13F/A-1 MERCK COM 58933Y105 28,193 -28,307 -50.10 2,805 -56.30 1.4511
2025-03-05 2024-12-31 13F MERCK COM 58933Y105 28,193 -28,307 2,805 1.4511
2025-03-28 2024-09-30 13F/A-1 MERCK COM 58933Y105 56,500 28,308 100.41 6,416 83.84 1.8682
2025-03-05 2024-09-30 13F MERCK COM 58933Y105 28,250 58 3,208 1.8682
2025-03-28 2024-06-30 13F/A-1 MERCK COM 58933Y105 28,192 -680 -2.36 3,490 -8.37 2.1691
2025-03-05 2024-06-30 13F MERCK COM 58933Y105 28,192 -680 3,490 2.1691
2025-03-28 2024-03-31 13F/A-1 MERCK COM 58933Y105 28,872 201 0.70 3,810 21.89 2.3065
2025-03-05 2024-03-31 13F MERCK COM 58933Y105 28,872 201 3,810 2.3065
2025-03-28 2023-12-31 13F/A-1 MERCK COM 58933Y105 28,671 -347 -1.20 3,126 4.62 1.9659
2025-03-04 2023-12-31 13F MERCK COM 58933Y105 28,671 -347 3,126 1.9659
2025-03-28 2023-09-30 13F/A-1 MERCK COM 58933Y105 29,018 -69 -0.24 2,987 -11.00 2.0392
2025-03-04 2023-09-30 13F MERCK COM 58933Y105 29,018 -69 2,987 2.0392
2025-03-28 2023-06-30 13F/A-1 MERCK COM 58933Y105 29,087 75 0.26 3,356 8.75 2.2603
2025-03-04 2023-06-30 13F MERCK COM 58933Y105 29,087 75 3,356 2.2603
2025-03-28 2023-03-31 13F/A-1 MERCK COM 58933Y105 29,012 -671 -2.26 3,087 -6.29 2.2399
2025-03-04 2023-03-31 13F MERCK COM 58933Y105 29,012 -671 3,087 2.2399
2025-03-28 2022-12-31 13F/A-1 MERCK COM 58933Y105 29,683 -1,731 -5.51 3,293 21.74 2.4864
2025-03-04 2022-12-31 13F MERCK COM 58933Y105 29,683 -1,731 3,293 2.4864
2025-03-28 2022-09-30 13F/A-1 MERCK COM 58933Y105 31,414 881 2.89 2,705 -2.80 2.2790
2025-03-04 2022-09-30 13F MERCK COM 58933Y105 31,414 881 2,705 2.2790
2025-03-28 2022-06-30 13F/A-1 MERCK COM 58933Y105 30,533 1,269 4.34 2,784 15.91 2.2285
2025-03-04 2022-06-30 13F MERCK COM 58933Y105 30,533 1,269 2,784 2.2285
2025-03-28 2022-03-31 13F/A-1 MERCK COM 58933Y105 29,264 4,495 18.15 2,401 26.50 1.6772
2025-03-04 2022-03-31 13F MERCK COM 58933Y105 29,264 4,495 2,401 1.6772
2025-03-28 2021-12-31 13F/A-1 MERCK COM 58933Y105 24,769 14,852 149.76 1,898 155.11 1.2633
2025-03-04 2021-12-31 13F MERCK COM 58933Y105 24,769 14,852 1,898 1.2633
2025-03-28 2021-09-30 13F/A-1 MERCK COM 58933Y105 9,917 443 4.68 745 1.09 0.5484
2025-03-04 2021-09-30 13F MERCK COM 58933Y105 9,917 443 745 0.5484
2025-03-28 2021-06-30 13F/A-1 MERCK COM 58933Y105 9,474 63 0.67 737 1.52 0.5279
2025-03-04 2021-06-30 13F MERCK COM 58933Y105 9,474 63 737 0.5279
2025-03-28 2021-03-31 13F/A-1 MERCK & CO. COM 58933Y105 9,411 216 2.35 726 -3.59 0.5396
2025-03-04 2021-03-31 13F MERCK & CO. COM 58933Y105 9,411 216 726 0.5396
2025-03-28 2020-12-31 13F/A-1 MERCK & CO. COM 58933Y105 9,195 9,195 752 0.6078
2025-02-28 2020-12-31 13F MERCK & CO. COM 58933Y105 9,195 9,195 752 0.6078
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.