Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionProVise Management Group, LLC
Latest Disclosed Ownership7,818 shares
Latest Disclosed Value $ 940,427
ProVise Management Group, LLC reports 7.56% decrease in ownership of MRK / Merck & Co., Inc.

On May 6, 2026 - ProVise Management Group, LLC filed a 13F-HR form disclosing ownership of 7,818 shares of Merck & Co., Inc. (MX:MRK) valued at $940,427 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 8,457 shares of Merck & Co., Inc.. This represents a change in shares of -7.56% 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)
2026-05-06 2026-03-31 13F MERCK COM 58933Y105 7,818 -639 -7.56 940 5.62 0.0676
2026-01-29 2025-12-31 13F MERCK COM 58933Y105 8,457 1,526 22.02 890 53.18 0.0634
2025-11-13 2025-09-30 13F MERCK COM 58933Y105 6,931 -613 -8.13 582 -2.68 0.0429
2025-08-08 2025-06-30 13F MERCK COM 58933Y105 7,544 -352 -4.46 597 -15.68 0.0472
2025-05-08 2025-03-31 13F MERCK COM 58933Y105 7,896 -138 -1.72 709 -11.39 0.0601
2025-02-11 2024-12-31 13F MERCK COM 58933Y105 8,034 -1,313 -14.05 799 -24.69 0.0685
2024-11-12 2024-09-30 13F MERCK COM 58933Y105 9,347 193 2.11 1,061 -6.35 0.0841
2024-08-12 2024-06-30 13F MERCK COM 58933Y105 9,154 -36 -0.39 1,133 -6.52 0.0965
2024-05-09 2024-03-31 13F MERCK COM 58933Y105 9,190 -4,324 -32.00 1,213 -17.72 0.1050
2024-02-09 2023-12-31 13F MERCK COM 58933Y105 13,514 199 1.49 1,473 7.52 0.1249
2023-11-08 2023-09-30 13F MERCK COM 58933Y105 13,315 778 6.21 1,371 -5.26 0.1274
2023-08-24 2023-06-30 13F/A-1 MERCK COM 58933Y105 12,537 1,196 10.55 1,447 19.90 0.1311
2023-08-03 2023-06-30 13F MERCK COM 58933Y105 11,341 0 1,207 0.1140
2023-05-08 2023-03-31 13F MERCK COM 58933Y105 11,341 1,772 18.52 1,207 13.67 0.1154
2023-02-10 2022-12-31 13F MERCK COM 58933Y105 9,569 168 1.79 1,062 30.99 0.1075
2022-11-09 2022-09-30 13F MERCK COM 58933Y105 9,401 244 2.66 810 -2.99 0.0905
2022-08-08 2022-06-30 13F MERCK COM 58933Y105 9,157 -1,750 -16.04 835 -6.70 0.0891
2022-04-27 2022-03-31 13F MERCK COM 58933Y105 10,907 -27,708 -71.75 895 -69.75 0.0845
2022-01-18 2021-12-31 13F MERCK COM 58933Y105 38,615 -64,308 -62.48 2,959 -61.73 0.2681
2021-10-20 2021-09-30 13F MERCK COM 58933Y105 102,923 -2,979 -2.81 7,731 -6.13 0.7648
2021-08-06 2021-06-30 13F MERCK COM 58933Y105 105,902 -1,385 -1.29 8,236 -0.42 0.8402
2021-04-22 2021-03-31 13F MERCK & CO. COM 58933Y105 107,287 23,306 27.75 8,271 20.39 0.8913
2021-01-19 2020-12-31 13F MERCK & CO. COM 58933Y105 83,981 60,807 262.39 6,870 257.44 0.7931
2020-10-26 2020-09-30 13F MERCK & CO. COM 58933Y105 23,174 0 0.00 1,922 7.25 0.2571
2020-08-07 2020-06-30 13F MERCK & CO. COM 58933Y105 23,174 -1,676 -6.74 1,792 -6.28 0.2572
2020-05-07 2020-03-31 13F MERCK & CO. COM 58933Y105 24,850 -544 -2.14 1,912 -17.23 0.3206
2020-02-11 2019-12-31 13F MERCK COM 58933Y105 25,394 140 0.55 2,310 8.65 0.2842
2019-11-13 2019-09-30 13F MERCK COM 58933Y105 25,254 -563 -2.18 2,126 -1.80 0.2819
2019-08-09 2019-06-30 13F MERCK COM 58933Y105 25,817 -2,213 -7.90 2,165 -7.12 0.2899
2019-05-13 2019-03-31 13F MERCK COM 58933Y105 28,030 -3,459 -10.98 2,331 -3.12 0.3272
2019-02-13 2018-12-31 13F MERCK COM 58933Y105 31,489 0 0.00 2,406 7.70 0.3803
2018-11-05 2018-09-30 13F MERCK COM 58933Y105 31,489 400 1.29 2,234 18.39 0.2940
2018-08-13 2018-06-30 13F MERCK COM 58933Y105 31,089 -600 -1.89 1,887 9.26 0.1421
2018-05-09 2018-03-31 13F MERCK COM 58933Y105 31,689 -400 -1.25 1,727 -4.32 0.2544
2018-02-07 2017-12-31 13F MERCK COM 58933Y105 32,089 -5,510 -14.65 1,805 -25.01 0.2590
2017-11-08 2017-09-30 13F MERCK COM 58933Y105 37,599 -1,254 -3.23 2,407 -3.33 0.3493
2017-08-07 2017-06-30 13F MERCK COM 58933Y105 38,853 735 1.93 2,490 2.81 0.3778
2017-05-10 2017-03-31 13F MERCK COM 58933Y105 38,118 0 0.00 2,422 7.93 0.3889
2017-02-08 2016-12-31 13F MERCK COM 58933Y105 38,118 -128 -0.33 2,244 -5.99 0.3816
2016-11-07 2016-09-30 13F MERCK COM 58933Y105 38,246 1,341 3.63 2,387 12.28 0.4137
2016-08-02 2016-06-30 13F MERCK COM 58933Y105 36,905 36,905 2,126 0.3911
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.