Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionBahl & Gaynor Inc
Latest Disclosed Ownership750,494 shares
Latest Disclosed Value $ 90,276,923
Bahl & Gaynor Inc reports 1.88% decrease in ownership of MRK / Merck & Co., Inc.

On May 7, 2026 - Bahl & Gaynor Inc filed a 13F-HR form disclosing ownership of 750,494 shares of Merck & Co., Inc. (MX:MRK) valued at $90,276,923 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 764,839 shares of Merck & Co., Inc.. This represents a change in shares of -1.88% 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)
2026-05-07 2026-03-31 13F Merck COM 58933Y105 750,494 -14,345 -1.88 90,277 12.14 0.4553
2026-02-12 2025-12-31 13F Merck COM 58933Y105 764,839 -265,002 -25.73 80,507 -6.86 0.4075
2025-11-12 2025-09-30 13F Merck COM 58933Y105 1,029,841 -1,406,091 -57.72 86,435 -55.18 0.4292
2025-08-12 2025-06-30 13F Merck COM 58933Y105 2,435,932 -1,304,663 -34.88 192,828 -42.57 0.9758
2025-05-14 2025-03-31 13F Merck COM 58933Y105 3,740,595 -579,583 -13.42 335,756 -21.88 1.7113
2025-02-06 2024-12-31 13F Merck COM 58933Y105 4,320,178 -110,823 -2.50 429,771 -14.59 2.2723
2024-11-12 2024-09-30 13F Merck COM 58933Y105 4,431,001 168,688 3.96 503,185 -4.64 2.5911
2024-08-07 2024-06-30 13F Merck COM 58933Y105 4,262,313 71,019 1.69 527,674 -4.59 2.9481
2024-05-10 2024-03-31 13F Merck COM 58933Y105 4,191,294 -80,667 -1.89 553,041 18.75 3.0791
2024-02-02 2023-12-31 13F Merck COM 58933Y105 4,271,961 -157,244 -3.55 465,729 2.14 2.8005
2023-11-03 2023-09-30 13F Merck COM 58933Y105 4,429,205 -114,477 -2.52 455,987 -13.03 2.9124
2023-08-14 2023-06-30 13F Merck COM 58933Y105 4,543,682 -946,725 -17.24 524,295 -10.24 3.1916
2023-05-03 2023-03-31 13F Merck COM 58933Y105 5,490,407 908,709 19.83 584,124 14.91 3.1452
2023-02-10 2022-12-31 13F Merck COM 58933Y105 4,581,698 -226,024 -4.70 508,339 22.78 3.1740
2022-11-14 2022-09-30 13F Merck COM 58933Y105 4,807,722 293,493 6.50 414,041 0.60 2.7432
2022-08-08 2022-06-30 13F Merck COM 58933Y105 4,514,229 1,449,652 47.30 411,562 63.68 2.7090
2022-05-12 2022-03-31 13F Merck COM 58933Y105 3,064,577 -1,190,958 -27.99 251,448 -22.90 1.8494
2022-02-10 2021-12-31 13F Merck COM 58933Y105 4,255,535 -28,581 -0.67 326,144 1.36 1.8228
2021-11-15 2021-09-30 13F Merck COM 58933Y105 4,284,116 97,942 2.34 321,780 -1.16 1.9727
2021-08-06 2021-06-30 13F Merck COM 58933Y105 4,186,174 521,549 14.23 325,559 15.24 1.9820
2021-05-11 2021-03-31 13F Merck COM 58933Y105 3,664,625 -90,054 -2.40 282,506 -8.02 1.7881
2021-02-02 2020-12-31 13F Merck COM 58933Y105 3,754,679 299,878 8.68 307,133 7.17 1.9558
2020-11-12 2020-09-30 13F Merck COM 58933Y105 3,454,801 420,991 13.88 286,576 22.15 2.0323
2020-08-13 2020-06-30 13F Merck COM 58933Y105 3,033,810 922,882 43.72 234,604 44.45 1.7647
2020-05-26 2020-03-31 13F/A-1 Merck COM 58933Y105 2,110,928 1,957,149 1,272.70 162,414 1,061.26 1.4156
2020-05-15 2020-03-31 13F Merck COM 58933Y105 777,434 623,655 59,816 1,992,095.0302
2020-02-14 2019-12-31 13F Merck COM 58933Y105 153,779 -1,420 -0.91 13,986 7.05 0.0970
2019-11-14 2019-09-30 13F Merck COM 58933Y105 155,199 -2,959 -1.87 13,065 -1.49 0.0944
2019-08-12 2019-06-30 13F Merck COM 58933Y105 158,158 -8,355 -5.02 13,262 -4.24 0.0982
2019-05-13 2019-03-31 13F Merck COM 58933Y105 166,513 -48,215 -22.45 13,849 -15.59 0.1270
2019-02-12 2018-12-31 13F Merck COM 58933Y105 214,728 -7,881 -3.54 16,407 3.89 0.1755
2018-11-09 2018-09-30 13F Merck COM 58933Y105 222,609 -122,637 -35.52 15,792 -24.65 0.2031
2018-08-14 2018-06-30 13F Merck & COM 58933Y105 345,246 -14,236 -3.96 20,957 7.03 0.2193
2018-05-11 2018-03-31 13F Merck & COM 58933Y105 359,482 -664,594 -64.90 19,581 -66.02 0.2156
2018-02-13 2017-12-31 13F Merck & COM 58933Y105 1,024,076 -1,239,123 -54.75 57,625 -60.23 0.5929
2017-11-13 2017-09-30 13F Merck & COM 58933Y105 2,263,199 95,597 4.41 144,913 4.31 1.5871
2017-08-11 2017-06-30 13F/A-1 Merck & COM 58933Y105 2,167,602 -256,705 -10.59 138,921 -9.81 1.5851
2017-08-10 2017-06-30 13F Merck COM 58933Y105 2,045,720 -378,587 120,432
2017-05-09 2017-03-31 13F Merck COM 58933Y105 2,424,307 378,587 18.51 154,040 27.91 1.7675
2017-02-14 2016-12-31 13F Merck COM 58933Y105 2,045,720 -633,575 -23.65 120,432 -27.98 1.4713
2016-11-07 2016-09-30 13F Merck COM 58933Y105 2,679,295 201,293 8.12 167,214 17.13 2.0225
2016-08-10 2016-06-30 13F Merck COM 58933Y105 2,478,002 -89,430 -3.48 142,758 5.09 1.8510
2016-05-10 2016-03-31 13F Merck COM 58933Y105 2,567,432 50,411 2.00 135,843 2.18 1.8040
2016-02-12 2015-12-31 13F Merck COM 58933Y105 2,517,021 213,317 9.26 132,949 16.85 1.8203
2015-11-10 2015-09-30 13F Merck COM 58933Y105 2,303,704 7,442 0.32 113,780 -12.96 1.6348
2015-08-03 2015-06-30 13F Merck COM 58933Y105 2,296,262 44,176 1.96 130,727 0.99 1.7557
2015-05-12 2015-03-31 13F Merck COM 58933Y105 2,252,086 2,252,086 0.00 129,450 1.7532
2015-02-04 2014-12-31 13F Merck COM 58933Y105 0 -2,052,372 -100.00 0 -100.00
2014-11-12 2014-09-30 13F Merck COM 58933Y105 2,052,372 75,638 3.83 121,664 6.39 1.8134
2014-08-13 2014-06-30 13F Merck COM 58933Y105 1,976,734 61,648 3.22 114,354 5.18 1.7390
2014-05-20 2014-03-31 13F Merck COM 58933Y105 1,915,086 333,335 21.07 108,719 37.33 1.7423
2014-02-14 2013-12-31 13F Merck COM 58933Y105 1,581,751 628,348 65.91 79,167 74.41 1.2977
2013-11-13 2013-09-30 13F Merck COM 58933Y105 953,403 129,798 15.76 45,391 18.65 0.8159
2013-08-16 2013-06-30 13F Merck COM 58933Y105 823,605 823,605 38,256 0.7231
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.