Merck & Co., Inc.
BG ˙ BUL ˙ US58933Y1055
SecurityBG:6MK / Merck & Co., Inc.
InstitutionStratos Wealth Partners, LTD.
Latest Disclosed Ownership113,014 shares
Latest Disclosed Value $ 13,594,555
Stratos Wealth Partners, LTD. reports 42.55% decrease in ownership of 6MK / Merck & Co., Inc.

On April 28, 2026 - Stratos Wealth Partners, LTD. filed a 13F-HR form disclosing ownership of 113,014 shares of Merck & Co., Inc. (BG:6MK) valued at $13,594,555 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 20, 2026 disclosing 196,716 shares of Merck & Co., Inc.. This represents a change in shares of -42.55% 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)
2026-04-28 2026-03-31 13F MERCK COM 58933Y105 113,014 -83,702 -42.55 13,595 -34.35 0.1545
2026-01-20 2025-12-31 13F MERCK COM 58933Y105 196,716 6,291 3.30 20,706 29.56 0.2341
2025-11-06 2025-09-30 13F MERCK COM 58933Y105 190,425 26,639 16.26 15,982 23.27 0.1885
2025-07-29 2025-06-30 13F MERCK COM 58933Y105 163,786 2,768 1.72 12,965 -10.30 0.1752
2025-04-30 2025-03-31 13F MERCK COM 58933Y105 161,018 -10,301 -6.01 14,453 -15.19 0.2200
2025-01-27 2024-12-31 13F MERCK COM 58933Y105 171,319 -1,569 -0.91 17,043 -13.20 0.2406
2024-10-17 2024-09-30 13F MERCK COM 58933Y105 172,888 12,085 7.52 19,633 -1.38 0.2835
2024-07-24 2024-06-30 13F MERCK COM 58933Y105 160,803 -1,939 -1.19 19,907 -7.29 0.3186
2024-04-16 2024-03-31 13F MERCK COM 58933Y105 162,742 -1,883 -1.14 21,474 19.65 0.3560
2024-01-24 2023-12-31 13F MERCK COM 58933Y105 164,625 -11,091 -6.31 17,947 -0.79 0.3347
2023-10-24 2023-09-30 13F MERCK COM 58933Y105 175,716 3,086 1.79 18,090 -9.19 0.3895
2023-07-18 2023-06-30 13F MERCK COM 58933Y105 172,630 12,102 7.54 19,920 16.64 0.4512
2023-04-27 2023-03-31 13F MERCK COM 58933Y105 160,528 -3,959 -2.41 17,079 -6.42 0.4553
2023-01-19 2022-12-31 13F MERCK COM 58933Y105 164,487 6,533 4.14 18,250 34.15 0.4618
2022-10-24 2022-09-30 13F MERCK COM 58933Y105 157,954 3,505 2.27 13,603 -3.39 0.3798
2022-07-22 2022-06-30 13F MERCK COM 58933Y105 154,449 11,664 8.17 14,081 20.19 0.3549
2022-04-26 2022-03-31 13F MERCK COM 58933Y105 142,785 2,100 1.49 11,716 8.66 0.2618
2022-01-14 2021-12-31 13F MERCK COM 58933Y105 140,685 14,435 11.43 10,782 13.70 0.2387
2021-10-19 2021-09-30 13F MERCK COM 58933Y105 126,250 37,067 41.56 9,483 36.72 0.2414
2021-07-19 2021-06-30 13F MERCK COM 58933Y105 89,183 -940 -1.04 6,936 -0.17 0.1727
2021-04-27 2021-03-31 13F MERCK & CO. COM 58933Y105 90,123 5,815 6.90 6,948 0.75 0.1923
2021-01-29 2020-12-31 13F MERCK & CO. COM 58933Y105 84,308 -1,039 -1.22 6,896 -2.60 0.2048
2020-10-29 2020-09-30 13F MERCK & CO. COM 58933Y105 85,347 3,783 4.64 7,080 12.26 0.2324
2020-07-28 2020-06-30 13F MERCK & CO. COM 58933Y105 81,564 4,793 6.24 6,307 6.77 0.2247
2020-05-04 2020-03-31 13F MERCK & CO. COM 58933Y105 76,771 7,698 11.14 5,907 -5.97 0.2708
2020-01-29 2019-12-31 13F MERCK COM 58933Y105 69,073 644 0.94 6,282 9.06 0.2467
2019-11-12 2019-09-30 13F/A-1 MERCK COM 58933Y105 68,429 -753 -1.09 5,760 -0.71 0.2490
2019-11-12 2019-09-30 13F MERCK COM 58933Y105 624 -68,558 8 297.8645
2019-08-06 2019-06-30 13F MERCK COM 58933Y105 69,182 3,255 4.94 5,801 5.80 0.2512
2019-05-07 2019-03-31 13F MERCK COM 58933Y105 65,927 10,720 19.42 5,483 29.99 0.2466
2019-02-08 2018-12-31 13F MERCK COM 58933Y105 55,207 -188 -0.34 4,218 7.33 0.2175
2018-11-02 2018-09-30 13F MERCK COM 58933Y105 55,395 -6,322 -10.24 3,930 4.91 0.1756
2018-08-13 2018-06-30 13F MERCK COM 58933Y105 61,717 -7,613 -10.98 3,746 -0.82 0.1671
2018-05-10 2018-03-31 13F MERCK COM 58933Y105 69,330 7,639 12.38 3,777 8.82 0.1591
2018-02-09 2017-12-31 13F MERCK COM 58933Y105 61,691 -1,377 -2.18 3,471 -14.04 0.1557
2017-11-07 2017-09-30 13F MERCK COM 58933Y105 63,068 482 0.77 4,038 0.67 0.1906
2017-07-31 2017-06-30 13F MERCK COM 58933Y105 62,586 -1,497 -2.34 4,011 -1.50 0.2070
2017-05-11 2017-03-31 13F MERCK COM 58933Y105 64,083 11,542 21.97 4,072 31.65 0.2300
2017-02-02 2016-12-31 13F MERCK COM 58933Y105 52,541 -2,518 -4.57 3,093 -9.98 0.1923
2016-11-01 2016-09-30 13F MERCK COM 58933Y105 55,059 14,063 34.30 3,436 45.47 0.2318
2016-08-12 2016-06-30 13F MERCK COM 58933Y105 40,996 6,731 19.64 2,362 30.28 0.1752
2016-05-09 2016-03-31 13F MERCK & CO INC COM 58933Y105 34,265 -14,684 -30.00 1,813 -29.89 0.1555
2016-02-16 2015-12-31 13F MERCK & CO INC COM 58933Y105 48,949 3,307 7.25 2,586 14.73 0.2156
2015-10-30 2015-09-30 13F MERCK & CO INC COM 58933Y105 45,642 -2,831 -5.84 2,254 -18.33 0.2831
2015-08-12 2015-06-30 13F MERCK & CO INC COM 58933Y105 48,473 -14,456 -22.97 2,760 -23.74 0.3543
2015-05-13 2015-03-31 13F MERCK & CO INC COM 58933Y105 62,929 19,333 44.35 3,619 46.16 0.4304
2015-02-09 2014-12-31 13F/A-1 MERCK & CO INC COM 58933Y105 43,596 5,096 13.24 2,476 8.50 0.4457
2015-02-09 2014-12-31 13F MERCK & CO INC COM 58933Y105 43,596 2,476
2014-11-06 2014-09-30 13F MERCK & CO INC COM 58933Y105 38,500 642 1.70 2,282 4.11 0.5352
2014-07-17 2014-06-30 13F/A-1 MERCK & CO INC COM 58933Y105 37,858 37,858 2,192 0.7310
2014-07-16 2014-06-30 13F MERCK & CO INC COM 58933Y105 38,323 38,323 6,688 1.9178
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.