Merck & Co., Inc.
BG ˙ BUL ˙ US58933Y1055
SecurityBG:6MK / Merck & Co., Inc.
InstitutionMonetary Management Group Inc
Latest Disclosed Ownership15,985 shares
Latest Disclosed Value $ 1,922,836
Monetary Management Group Inc reports 0.62% decrease in ownership of 6MK / Merck & Co., Inc.

On May 13, 2026 - Monetary Management Group Inc filed a 13F-HR form disclosing ownership of 15,985 shares of Merck & Co., Inc. (BG:6MK) valued at $1,922,836 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 16,085 shares of Merck & Co., Inc.. This represents a change in shares of -0.62% 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)
2026-05-13 2026-03-31 13F Merck COM 58933Y105 15,985 -100 -0.62 1,923 13.53 0.4592
2026-02-11 2025-12-31 13F Merck COM 58933Y105 16,085 -800 -4.74 1,693 19.48 0.3915
2025-11-12 2025-09-30 13F Merck COM 58933Y105 16,885 -2,150 -11.29 1,417 -5.91 0.3254
2025-08-14 2025-06-30 13F Merck COM 58933Y105 19,035 125 0.66 1,507 -11.26 0.3709
2025-05-14 2025-03-31 13F Merck COM 58933Y105 18,910 5,100 36.93 1,697 23.60 0.4587
2025-02-13 2024-12-31 13F Merck COM 58933Y105 13,810 775 5.95 1,374 -7.23 0.3570
2024-11-13 2024-09-30 13F Merck COM 58933Y105 13,035 4,080 45.56 1,480 33.57 0.3804
2024-07-16 2024-06-30 13F Merck COM 58933Y105 8,955 -200 -2.18 1,109 -8.28 0.2931
2024-05-13 2024-03-31 13F Merck COM 58933Y105 9,155 -250 -2.66 1,208 17.85 0.3366
2024-02-14 2023-12-31 13F Merck COM 58933Y105 9,405 -50 -0.53 1,025 5.34 0.3198
2023-11-09 2023-09-30 13F Merck COM 58933Y105 9,455 -450 -4.54 973 -14.80 0.3245
2023-08-11 2023-06-30 13F Merck COM 58933Y105 9,905 0 0.00 1,143 8.45 0.3503
2023-05-11 2023-03-31 13F Merck COM 58933Y105 9,905 250 2.59 1,054 -1.68 0.3101
2023-02-13 2022-12-31 13F Merck COM 58933Y105 9,655 -274 -2.76 1,071 25.26 0.3345
2022-11-14 2022-09-30 13F Merck COM 58933Y105 9,929 0 0.00 855 -5.52 0.2818
2022-08-11 2022-06-30 13F Merck COM 58933Y105 9,929 -50 -0.50 905 10.50 0.2837
2022-05-12 2022-03-31 13F Merck COM 58933Y105 9,979 175 1.78 819 9.05 0.2169
2022-02-14 2021-12-31 13F Merck COM 58933Y105 9,804 150 1.55 751 3.59 0.1858
2021-11-12 2021-09-30 13F Merck COM 58933Y105 9,654 300 3.21 725 -0.28 0.1994
2021-08-12 2021-06-30 13F Merck COM 58933Y105 9,354 -16,015 -63.13 727 -62.83 0.2191
2021-05-17 2021-03-31 13F Merck COM 58933Y105 25,369 -3,350 -11.66 1,956 -16.73 0.6152
2021-02-12 2020-12-31 13F Merck COM 58933Y105 28,719 0 0.00 2,349 -1.39 0.7740
2020-11-12 2020-09-30 13F Merck COM 58933Y105 28,719 -5,250 -15.46 2,382 -9.33 0.8486
2020-08-13 2020-06-30 13F Merck COM 58933Y105 33,969 74 0.22 2,627 0.73 0.9927
2020-05-14 2020-03-31 13F Merck COM 58933Y105 33,895 1,626 5.04 2,608 -11.14 1.1542
2020-02-13 2019-12-31 13F Merck COM 58933Y105 32,269 5,505 20.57 2,935 30.27 1.0727
2019-11-12 2019-09-30 13F Merck COM 58933Y105 26,764 15,220 131.84 2,253 132.75 0.8530
2019-08-13 2019-06-30 13F Merck COM 58933Y105 11,544 -400 -3.35 968 -2.52 0.3718
2019-05-14 2019-03-31 13F Merck COM 58933Y105 11,944 500 4.37 993 13.62 0.3931
2019-02-13 2018-12-31 13F Merck COM 58933Y105 11,444 1,675 17.15 874 26.12 0.3949
2018-11-13 2018-09-30 13F Merck COM 58933Y105 9,769 125 1.30 693 18.46 0.2647
2018-08-13 2018-06-30 13F Merck COM 58933Y105 9,644 -125 -1.28 585 9.96 0.2387
2018-05-14 2018-03-31 13F Merck COM 58933Y105 9,769 -1,800 -15.56 532 -18.28 0.2205
2018-02-14 2017-12-31 13F Merck COM 58933Y105 11,569 275 2.43 651 -9.96 0.2624
2017-11-13 2017-09-30 13F Merck COM 58933Y105 11,294 2,800 32.96 723 32.90 0.3048
2017-08-14 2017-06-30 13F Merck COM 58933Y105 8,494 3,950 86.93 544 88.24 0.2223
2017-05-15 2017-03-31 13F Merck COM 58933Y105 4,544 -8,800 -65.95 289 -63.23 0.1257
2017-02-13 2016-12-31 13F Merck COM 58933Y105 13,344 -326 -2.38 786 -7.85 0.3631
2016-11-10 2016-09-30 13F Merck COM 58933Y105 13,670 200 1.48 853 9.92 0.3946
2016-08-12 2016-06-30 13F Merck COM 58933Y105 13,470 5,630 71.81 776 86.99 0.3610
2016-05-11 2016-03-31 13F Merck COM 58933Y105 7,840 2,950 60.33 415 60.85 0.2018
2016-02-11 2015-12-31 13F Merck COM 58933Y105 4,890 0 0.00 258 6.61 0.1236
2015-11-25 2015-09-30 13F Merck COM 58933Y105 4,890 -1,180 -19.44 242 -30.06 0.1211
2015-08-11 2015-06-30 13F Merck COM 58933Y105 6,070 300 5.20 346 4.22 0.1561
2015-05-12 2015-03-31 13F Merck COM 58933Y105 5,770 0 0.00 332 1.22 0.1465
2015-02-12 2014-12-31 13F Merck COM 58933Y105 5,770 -400 -6.48 328 -10.38 0.1457
2014-11-06 2014-09-30 13F Merck COM 58933Y105 6,170 0 0.00 366 2.52 0.1696
2014-08-12 2014-06-30 13F Merck COM 58933Y105 6,170 -1,075 -14.84 357 -13.14 0.1670
2014-05-08 2014-03-31 13F Merck COM 58933Y105 7,245 -90 -1.23 411 11.99 0.1911
2014-02-14 2013-12-31 13F Merck COM 58933Y105 7,335 -7,400 -50.22 367 -47.72 0.1701
2013-11-12 2013-09-30 13F Merck COM 58933Y105 14,735 -2,105 -12.50 702 -10.23 0.3690
2013-08-14 2013-06-30 13F Merck COM 58933Y105 16,840 16,840 782 0.4281
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.