Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionSummit Financial Strategies, Inc.
Latest Disclosed Ownership6,057 shares
Latest Disclosed Value $ 728,616
Summit Financial Strategies, Inc. reports 0.28% decrease in ownership of MRK / Merck & Co., Inc.

On May 1, 2026 - Summit Financial Strategies, Inc. filed a 13F-HR form disclosing ownership of 6,057 shares of Merck & Co., Inc. (MX:MRK) valued at $728,616 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 27, 2026 disclosing 6,074 shares of Merck & Co., Inc.. This represents a change in shares of -0.28% 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)
2026-05-01 2026-03-31 13F MERCK COM 58933Y105 6,057 -17 -0.28 729 13.93 0.0574
2026-01-27 2025-12-31 13F MERCK COM 58933Y105 6,074 377 6.62 639 33.68 0.0525
2025-10-22 2025-09-30 13F MERCK COM 58933Y105 5,697 -76 -1.32 478 4.60 0.0410
2025-07-17 2025-06-30 13F MERCK COM 58933Y105 5,773 132 2.34 457 -9.68 0.0423
2025-05-12 2025-03-31 13F MERCK COM 58933Y105 5,641 241 4.46 506 -5.77 0.0511
2025-01-22 2024-12-31 13F MERCK COM 58933Y105 5,400 0 0.00 537 -12.40 0.0593
2024-10-16 2024-09-30 13F MERCK COM 58933Y105 5,400 0 0.00 613 -8.23 0.0690
2024-07-19 2024-06-30 13F MERCK COM 58933Y105 5,400 -226 -4.02 669 -9.97 0.0831
2024-05-09 2024-03-31 13F MERCK COM 58933Y105 5,626 -167 -2.88 742 17.59 0.1035
2024-02-13 2023-12-31 13F MERCK COM 58933Y105 5,793 0 0.00 632 5.87 0.0965
2023-10-24 2023-09-30 13F MERCK COM 58933Y105 5,793 -371 -6.02 596 -16.17 0.1136
2023-07-21 2023-06-30 13F MERCK COM 58933Y105 6,164 132 2.19 711 10.92 0.1327
2023-04-21 2023-03-31 13F MERCK COM 58933Y105 6,032 -969 -13.84 642 -17.40 0.1264
2023-01-20 2022-12-31 13F MERCK COM 58933Y105 7,001 -3,030 -30.21 777 -10.19 0.1672
2022-10-21 2022-09-30 13F MERCK COM 58933Y105 10,031 3,001 42.69 864 34.79 0.2051
2022-07-25 2022-06-30 13F MERCK COM 58933Y105 7,030 850 13.75 641 26.43 0.1501
2022-05-04 2022-03-31 13F MERCK COM 58933Y105 6,180 6 0.10 507 7.19 0.1020
2022-02-03 2021-12-31 13F MERCK COM 58933Y105 6,174 0 0.00 473 1.94 0.0913
2021-11-10 2021-09-30 13F MERCK COM 58933Y105 6,174 247 4.17 464 0.65 0.0886
2021-08-11 2021-06-30 13F MERCK COM 58933Y105 5,927 238 4.18 461 5.01 0.0913
2021-05-11 2021-03-31 13F MERCK & CO. COM 58933Y105 5,689 -126 -2.17 439 -7.77 0.1571
2021-02-05 2020-12-31 13F MERCK & CO. COM 58933Y105 5,815 426 7.90 476 6.49 0.1636
2020-11-16 2020-09-30 13F MERCK & CO. COM 58933Y105 5,389 -720 -11.79 447 -5.30 0.1821
2020-07-31 2020-06-30 13F MERCK & CO. COM 58933Y105 6,109 255 4.36 472 4.89 0.2098
2020-05-11 2020-03-31 13F MERCK & CO. COM 58933Y105 5,854 -979 -14.33 450 -27.54 0.2441
2020-02-11 2019-12-31 13F MERCK COM 58933Y105 6,833 364 5.63 621 13.94 0.3038
2019-11-14 2019-09-30 13F MERCK COM 58933Y105 6,469 1 0.02 545 0.55 0.2619
2019-08-08 2019-06-30 13F MERCK COM 58933Y105 6,468 -33 -0.51 542 0.18 0.2631
2019-05-14 2019-03-31 13F MERCK COM 58933Y105 6,501 -100 -1.51 541 7.34 0.2745
2019-02-06 2018-12-31 13F MERCK COM 58933Y105 6,601 93 1.43 504 9.09 0.2827
2018-11-08 2018-09-30 13F MERCK COM 58933Y105 6,508 -94 -1.42 462 15.21 0.2106
2018-08-03 2018-06-30 13F MERCK COM 58933Y105 6,602 201 3.14 401 14.90 0.1949
2018-05-14 2018-03-31 13F MERCK COM 58933Y105 6,401 139 2.22 349 -0.85 0.1807
2018-01-29 2017-12-31 13F MERCK COM 58933Y105 6,262 -1,045 -14.30 352 -24.79 0.1842
2017-11-09 2017-09-30 13F MERCK COM 58933Y105 7,307 -665 -8.34 468 -8.41 0.2700
2017-08-01 2017-06-30 13F MERCK COM 58933Y105 7,972 363 4.77 511 5.80 0.3081
2017-05-15 2017-03-31 13F MERCK COM 58933Y105 7,609 326 4.48 483 12.59 0.3535
2017-02-08 2016-12-31 13F MERCK COM 58933Y105 7,283 -650 -8.19 429 -13.33 0.2933
2016-11-10 2016-09-30 13F MERCK COM 58933Y105 7,933 200 2.59 495 11.24 0.3472
2016-07-27 2016-06-30 13F MERCK COM 58933Y105 7,733 -150 -1.90 445 6.71 0.3303
2016-05-09 2016-03-31 13F MERCK & CO INC COM 58933Y105 7,883 -531 -6.31 417 -6.08 0.3052
2016-02-01 2015-12-31 13F MERCK & CO INC COM 58933Y105 8,414 -2,503 -22.93 444 -17.63 0.3455
2015-11-03 2015-09-30 13F MERCK & CO INC COM 58933Y105 10,917 -750 -6.43 539 -18.83 0.4474
2015-08-06 2015-06-30 13F MERCK & CO INC COM 58933Y105 11,667 1,835 18.66 664 17.52 0.5178
2015-05-14 2015-03-31 13F MERCK & CO INC COM 58933Y105 9,832 -2,514 -20.36 565 -19.40 0.4551
2015-02-13 2014-12-31 13F MERCK & CO INC COM 58933Y105 12,346 12,346 701 0.5676
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.