Merck & Co., Inc.
DE ˙ XTRA ˙ US58933Y1055
102,78 € ↑2,84 (2,84%)
2026-06-04
DEL PRIS
SecurityDE:6MK / Merck & Co., Inc.
InstitutionTradewinds, LLC.
Latest Disclosed Ownership7,287 shares
Latest Disclosed Value $ 817,303
Tradewinds, LLC. reports 0.33% increase in ownership of 6MK / Merck & Co., Inc.

On May 4, 2026 - Tradewinds, LLC. filed a 13F-HR form disclosing ownership of 7,287 shares of Merck & Co., Inc. (DE:6MK) valued at $759,305 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 7,263 shares of Merck & Co., Inc.. This represents a change in shares of 0.33% during the quarter. The current value of the position is $748,958 USD.

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)
2026-05-04 2026-03-31 13F MERCK & CO INC COM 58933Y105 7,287 24 0.33 817 6.94 0.2634
2026-02-13 2025-12-31 13F MERCK & CO INC COM 58933Y105 7,263 -176 -2.37 764 22.44 0.1824
2025-10-29 2025-09-30 13F MERCK & CO INC COM 58933Y105 7,439 7,439 624 0.1521
2025-08-06 2025-06-30 13F MERCK & CO INC MRK 58933Y105 0 -11,754 -100.00 0 -100.00
2025-04-29 2025-03-31 13F MERCK & CO INC MRK 58933Y105 11,754 -1,786 -13.19 1,055 -9.60 0.2977
2025-02-12 2024-12-31 13F MERCK & CO INC COM 58933Y105 13,540 -2,109 -13.48 1,168 -34.33 0.3245
2024-11-08 2024-09-30 13F MERCK & CO INC COM 58933Y105 15,649 101 0.65 1,777 -7.64 0.5471
2024-08-14 2024-06-30 13F MERCK COM 58933Y105 15,548 5,418 53.48 1,925 44.01 0.5918
2024-05-08 2024-03-31 13F MERCK & CO INC COM 58933Y105 10,130 -451 -4.26 1,337 22.68 0.6395
2023-11-06 2023-09-30 13F MERCK & CO INC COM 58933Y105 10,581 -91 -0.85 1,089 -11.54 0.6395
2023-08-15 2023-06-30 13F MERCK CO INC MRK 58933Y105 10,672 -165 -1.52 1,231 6.86 0.7255
2023-04-06 2023-03-31 13F MERCK & CO INC Stock 58933Y105 10,837 10,837 1,153 0.6986
2023-02-08 2022-12-31 13F MERCK & CO INC Stock 58933Y105 0 -10,767 -100.00 0 -100.00
2022-10-17 2022-09-30 13F MERCK & CO INC Stock 58933Y105 10,767 49 0.46 927 -5.12 0.6734
2022-08-15 2022-06-30 13F MERCK & CO INC Stock 58933Y105 10,718 534 5.24 977 -11.98 0.6644
2024-02-05 2021-12-31 13F MERCK & CO INC Stock 58933Y105 10,184 10,184 1,110 1.3104
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.