Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionFinancial Management Professionals, Inc.
Latest Disclosed Ownership3,734 shares
Latest Disclosed Value $ 452,325
Financial Management Professionals, Inc. reports 0.81% increase in ownership of MRK / Merck & Co., Inc.

On April 15, 2026 - Financial Management Professionals, Inc. filed a 13F-HR form disclosing ownership of 3,734 shares of Merck & Co., Inc. (MX:MRK) valued at $452,325 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 27, 2026 disclosing 3,704 shares of Merck & Co., Inc.. This represents a change in shares of 0.81% 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)
2026-04-15 2026-03-31 13F Merck Stock 58933Y105 3,734 30 0.81 452 15.01 0.0507
2026-01-27 2025-12-31 13F Merck Stock 58933Y105 3,704 -87 -2.29 393 22.43 0.0405
2025-10-15 2025-09-30 13F Merck Stock 58933Y105 3,791 47 1.26 321 7.36 0.0334
2025-07-15 2025-06-30 13F Merck Stock 58933Y105 3,744 307 8.93 299 -2.92 0.0337
2025-04-10 2025-03-31 13F Merck Stock 58933Y105 3,437 -387 -10.12 309 -18.95 0.0394
2025-01-15 2024-12-31 13F Merck Stock 58933Y105 3,824 333 9.54 380 0.0481
2024-10-24 2024-09-30 13F Merck Stock 58933Y105 3,491 -316 -8.30 0 0.0492
2024-07-12 2024-06-30 13F Merck Stock 58933Y105 3,807 229 6.40 0 0.0646
2024-04-16 2024-03-31 13F Merck Stock 58933Y105 3,578 -116 -3.14 0 0.0696
2024-01-12 2023-12-31 13F Merck Stock 58933Y105 3,694 -106 -2.79 0 0.0657
2023-10-13 2023-09-30 13F Merck Stock 58933Y105 3,800 78 2.10 0 0.0688
2023-07-10 2023-06-30 13F Merck Stock 58933Y105 3,722 77 2.11 0 0.0718
2023-04-13 2023-03-31 13F Merck Stock 58933Y105 3,645 310 9.30 0 0.0749
2023-01-11 2022-12-31 13F Merck Stock 58933Y105 3,335 61 1.86 0 -100.00 0.0757
2022-10-27 2022-09-30 13F Merck Stock 58933Y105 3,274 -140 -4.10 282 -9.32 0.0646
2022-07-12 2022-06-30 13F MERCK COM 58933Y105 3,414 291 9.32 311 21.48 0.0755
2022-04-27 2022-03-31 13F MERCK COM 58933Y105 3,123 123 4.10 256 11.30 0.0555
2022-01-28 2021-12-31 13F MERCK COM 58933Y105 3,000 63 2.15 230 4.07 0.0487
2021-11-02 2021-09-30 13F MERCK COM 58933Y105 2,937 -98 -3.23 221 -6.36 0.0510
2021-08-05 2021-06-30 13F MERCK COM 58933Y105 3,035 137 4.73 236 5.83 0.0608
2021-04-26 2021-03-31 13F MERCK & CO. COM 58933Y105 2,898 -579 -16.65 223 -21.48 0.0597
2021-02-03 2020-12-31 13F MERCK & CO. COM 58933Y105 3,477 68 1.99 284 0.35 0.0797
2020-10-26 2020-09-30 13F MERCK & CO. COM 58933Y105 3,409 84 2.53 283 10.12 0.1010
2020-07-21 2020-06-30 13F MERCK & CO. COM 58933Y105 3,325 1,255 60.63 257 61.64 0.0887
2020-04-24 2020-03-31 13F MERCK & CO. COM 58933Y105 2,070 -130 -5.91 159 -20.50 0.0674
2020-01-21 2019-12-31 13F MERCK COM 58933Y105 2,200 0 0.00 200 8.11 0.0662
2019-10-11 2019-09-30 13F MERCK COM 58933Y105 2,200 136 6.59 185 6.94 0.0682
2019-07-29 2019-06-30 13F MERCK COM 58933Y105 2,064 0 0.00 173 0.58 0.0641
2019-04-22 2019-03-31 13F MERCK COM 58933Y105 2,064 0 0.00 172 8.86 0.0691
2019-01-22 2018-12-31 13F MERCK COM 58933Y105 2,064 0 0.00 158 8.22 0.0985
2018-10-24 2018-09-30 13F MERCK COM 58933Y105 2,064 0 0.00 146 16.80 0.0567
2018-08-01 2018-06-30 13F MERCK COM 58933Y105 2,064 -1,164 -36.06 125 -28.98 0.0509
2018-05-04 2018-03-31 13F MERCK COM 58933Y105 3,228 1,864 136.66 176 131.58 0.0911
2018-01-19 2017-12-31 13F MERCK COM 58933Y105 1,364 0 0.00 76 -12.64 0.0321
2017-10-19 2017-09-30 13F MERCK COM 58933Y105 1,364 0 0.00 87 0.00 0.0381
2017-07-28 2017-06-30 13F MERCK COM 58933Y105 1,364 1,225 881.29 87 987.50 0.0395
2017-04-18 2017-03-31 13F MERCK COM 58933Y105 139 0 0.00 8 0.00 0.0041
2017-02-06 2016-12-31 13F MERCK COM 58933Y105 139 0 0.00 8 0.00 0.0042
2016-11-07 2016-09-30 13F MERCK COM 58933Y105 139 -349 -71.52 8 -71.43 0.0041
2016-08-04 2016-06-30 13F MERCK COM 58933Y105 488 349 251.08 28 300.00 0.0147
2016-05-04 2016-03-31 13F MERCK COM 58933Y105 139 0 0.00 7 0.00 0.0036
2016-01-28 2015-12-31 13F MERCK COM 58933Y105 139 0 0.00 7 0.00 0.0036
2015-11-03 2015-09-30 13F MERCK COM 58933Y105 139 0 0.00 7 0.00 0.0047
2015-07-30 2015-06-30 13F MERCK COM 58933Y105 139 0 0.00 7 -12.50 0.0033
2015-05-05 2015-03-31 13F MERCK & CO INC COM 58933Y105 139 139 0.00 8 0.0037
2015-01-29 2014-12-31 13F MERCK & CO INC COM 58933Y105 0 -139 -100.00 0 -100.00
2014-11-03 2014-09-30 13F MERCK & CO INC COM 58933Y105 139 0 0.00 8 0.00 0.0055
2014-08-01 2014-06-30 13F MERCK & CO INC COM 58933Y105 139 0 0.00 8 0.00 0.0053
2014-05-06 2014-03-31 13F MERCK & CO INC COM 58933Y105 139 0 0.00 8 14.29 0.0055
2014-01-23 2013-12-31 13F MERCK & CO INC COM 58933Y105 139 0 0.00 7 0.00 0.0047
2013-10-30 2013-09-30 13F MERCK & CO INC COM 58933Y105 139 0 0.00 7 16.67 0.0043
2013-08-08 2013-06-30 13F MERCK & CO INC COM 58933Y105 139 139 6 0.0044
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.