Merck & Co., Inc.
BG ˙ BUL ˙ US58933Y1055
SecurityBG:6MK / Merck & Co., Inc.
InstitutionNvwm, Llc
Latest Disclosed Ownership32,887 shares
Latest Disclosed Value $ 3,955,977
Nvwm, Llc reports 0.16% decrease in ownership of 6MK / Merck & Co., Inc.

On April 27, 2026 - Nvwm, Llc filed a 13F-HR form disclosing ownership of 32,887 shares of Merck & Co., Inc. (BG:6MK) valued at $3,955,977 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 20, 2026 disclosing 32,941 shares of Merck & Co., Inc.. This represents a change in shares of -0.16% 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)
2026-04-27 2026-03-31 13F MERCK & CO INC COM COM 58933Y105 32,887 -54 -0.16 3,956 14.08 0.4639
2026-01-20 2025-12-31 13F MERCK & CO INC COM COM 58933Y105 32,941 31,854 2,930.45 3,467 3,709.89 0.7544
2025-10-16 2025-09-30 13F MERCK & CO INC COM COM 58933Y105 1,087 5 0.46 91 7.06 0.0205
2025-08-06 2025-06-30 13F MERCK & CO INC COM COM 58933Y105 1,082 627 137.80 86 112.50 0.0207
2025-05-07 2025-03-31 13F MERCK & CO INC COM COM 58933Y105 455 10 2.25 41 -9.09 0.0108
2025-01-27 2024-12-31 13F MERCK & CO INC COM COM 58933Y105 445 -9,849 -95.68 44 -96.23 0.0112
2024-10-29 2024-09-30 13F MERCK & CO INC COM COM 58933Y105 10,294 945 10.11 1,169 0.34 0.2975
2024-08-13 2024-06-30 13F MERCK & CO INC COM COM 58933Y105 9,349 352 3.91 1,165 -2.51 0.3101
2024-05-07 2024-03-31 13F MERCK & CO INC COM COM 58933Y105 8,997 484 5.69 1,194 27.84 0.3278
2024-02-08 2023-12-31 13F MERCK & CO INC COM COM 58933Y105 8,513 -220 -2.52 935 3.20 0.2802
2023-10-30 2023-09-30 13F MERCK & CO INC COM COM 58933Y105 8,733 591 7.26 905 -3.62 0.2958
2023-08-08 2023-06-30 13F MERCK & CO INC COM COM 58933Y105 8,142 9 0.11 940 7.81 0.3055
2023-05-11 2023-03-31 13F MERCK & CO INC COM COM 58933Y105 8,133 524 6.89 871 2.59 0.2920
2023-02-14 2022-12-31 13F MERCK & CO INC COM COM 58933Y105 7,609 -47 -0.61 850 28.64 0.3086
2022-11-15 2022-09-30 13F MERCK & CO INC COM COM 58933Y105 7,656 90 1.19 660 -5.04 0.2619
2022-08-04 2022-06-30 13F MERCK & CO INC COM COM 58933Y105 7,566 6,823 918.30 695 1,039.34 0.2700
2022-05-11 2022-03-31 13F MERCK & CO INC COM COM 58933Y105 743 -33 -4.25 61 3.39 0.0193
2022-02-08 2021-12-31 13F MERCK & CO INC COM COM 58933Y105 776 0 0.00 59 0.00 0.0184
2021-11-03 2021-09-30 13F MERCK & CO INC COM COM 58933Y105 776 198 34.26 59 31.11 0.0212
2021-08-04 2021-06-30 13F MERCK & CO INC COM COM 58933Y105 578 0 0.00 45 0.00 0.0162
2021-05-11 2021-03-31 13F MERCK & CO. INC COM COM 58933Y105 578 -12,126 -95.45 45 -95.70 0.0179
2021-02-09 2020-12-31 13F MERCK & CO. INC COM COM 58933Y105 12,704 -7,260 -36.37 1,047 -36.78 0.4358
2020-12-10 2020-09-30 13F MERCK & CO. INC COM COM 58933Y105 19,964 9,685 94.22 1,656 106.74 0.7775
2020-08-11 2020-06-30 13F MERCK & CO. INC COM COM 58933Y105 10,279 267 2.67 801 3.09 0.4313
2020-05-08 2020-03-31 13F MERCK & CO. INC COM COM 58933Y105 10,012 1,000 11.10 777 -5.24 0.5399
2020-02-07 2019-12-31 13F MERCK & CO INC COM COM 58933Y105 9,012 -620 -6.44 820 0.49 0.4912
2019-11-08 2019-09-30 13F/A-1 MERCK & CO INC COM COM 58933Y105 9,632 164 1.73 816 2.13 0.5013
2019-10-29 2019-09-30 13F MERCK & CO INC COM COM 58933Y105 9,632 164 816 0.4999
2019-08-07 2019-06-30 13F MERCK & CO INC COM COM 58933Y105 9,468 -72 -0.75 799 0.00 0.4819
2019-05-10 2019-03-31 13F MERCK & CO INC COM COM 58933Y105 9,540 623 6.99 799 17.16 0.5294
2019-01-29 2018-12-31 13F MERCK & CO INC COM COM 58933Y105 8,917 8,417 1,683.40 682 1,794.44 0.5109
2018-11-14 2018-09-30 13F MERCK & CO INC COM COM 58933Y105 500 0 0.00 36 16.13 0.0228
2018-08-01 2018-06-30 13F MERCK & CO INC COM COM 58933Y105 500 0 0.00 31 14.81 0.0215
2018-05-17 2018-03-31 13F MERCK & CO INC COM COM 58933Y105 500 0 0.00 27 -3.57 0.0197
2018-03-15 2017-12-31 13F MERCK & CO INC COM COM 58933Y105 500 500 28 0.0214
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.