Merck & Co., Inc.
BG ˙ BUL ˙ US58933Y1055
SecurityBG:6MK / Merck & Co., Inc.
InstitutionTCG Advisory Services, LLC
Latest Disclosed Ownership46,515 shares
Latest Disclosed Value $ 5,595,268
TCG Advisory Services, LLC reports 3.65% increase in ownership of 6MK / Merck & Co., Inc.

On May 15, 2026 - TCG Advisory Services, LLC filed a 13F-HR form disclosing ownership of 46,515 shares of Merck & Co., Inc. (BG:6MK) valued at $5,595,268 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 44,879 shares of Merck & Co., Inc.. This represents a change in shares of 3.65% 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)
2026-05-15 2026-03-31 13F MERCK COM 58933Y105 46,515 1,636 3.65 5,595 18.46 0.1338
2026-02-17 2025-12-31 13F MERCK COM 58933Y105 44,879 -3,651 -7.52 4,724 15.96 0.1223
2025-11-12 2025-09-30 13F MERCK COM 58933Y105 48,530 -25,274 -34.24 4,073 -30.28 0.1354
2025-08-14 2025-06-30 13F MERCK COM 58933Y105 73,804 -60,451 -45.03 5,842 -51.52 0.1949
2025-05-15 2025-03-31 13F MERCK COM 58933Y105 134,255 6,264 4.89 12,051 -5.36 0.4782
2025-02-11 2024-12-31 13F MERCK COM 58933Y105 127,991 3,873 3.12 12,733 -9.66 0.5334
2024-11-14 2024-09-30 13F MERCK COM 58933Y105 124,118 4,702 3.94 14,095 -4.66 0.6145
2024-08-09 2024-06-30 13F MERCK COM 58933Y105 119,416 8,055 7.23 14,784 0.61 0.5601
2024-05-10 2024-03-31 13F MERCK COM 58933Y105 111,361 13,009 13.23 14,694 37.05 0.8022
2024-02-06 2023-12-31 13F MERCK COM 58933Y105 98,352 57,078 138.29 10,722 152.34 0.7314
2023-11-14 2023-09-30 13F MERCK COM 58933Y105 41,274 6,684 19.32 4,249 6.46 0.6413
2023-08-14 2023-06-30 13F MERCK COM 58933Y105 34,590 696 2.05 3,991 10.71 0.6626
2023-04-24 2023-03-31 13F MERCK COM 58933Y105 33,894 33,894 3,606 0.7456
2023-02-10 2022-12-31 13F MERCK COM 58933Y105 0 -28,601 -100.00 0 -100.00
2022-11-14 2022-09-30 13F MERCK COM 58933Y105 28,601 2,438 9.32 2,463 3.27 0.7426
2022-08-12 2022-06-30 13F MERCK COM 58933Y105 26,163 251 0.97 2,385 12.18 0.7444
2022-05-13 2022-03-31 13F MERCK COM 58933Y105 25,912 -1,464 -5.35 2,126 1.33 0.5003
2022-02-11 2021-12-31 13F MERCK COM 58933Y105 27,376 310 1.15 2,098 3.20 0.4875
2021-11-12 2021-09-30 13F MERCK COM 58933Y105 27,066 1,427 5.57 2,033 1.96 0.4838
2021-08-13 2021-06-30 13F MERCK COM 58933Y105 25,639 2,518 10.89 1,994 11.90 0.5326
2021-05-14 2021-03-31 13F MERCK & CO. COM 58933Y105 23,121 5,974 34.84 1,782 25.32 0.5256
2021-02-12 2020-12-31 13F MERCK & CO. COM 58933Y105 17,147 17,147 1,422 0.6473
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.