Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionOakworth Capital, Inc.
Latest Disclosed Ownership39,007 shares
Latest Disclosed Value $ 4,692,152
Oakworth Capital, Inc. reports 6.58% decrease in ownership of MRK / Merck & Co., Inc.

On April 24, 2026 - Oakworth Capital, Inc. filed a 13F-HR form disclosing ownership of 39,007 shares of Merck & Co., Inc. (MX:MRK) valued at $4,692,152 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 41,756 shares of Merck & Co., Inc.. This represents a change in shares of -6.58% 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)
2026-04-24 2026-03-31 13F MERCK COMMON STOCK 58933Y105 39,007 -2,749 -6.58 4,692 6.76 0.1187
2026-01-30 2025-12-31 13F MERCK COMMON STOCK 58933Y105 41,756 -3,138 -6.99 4,395 16.67 0.2400
2025-11-04 2025-09-30 13F MERCK COMMON STOCK 58933Y105 44,894 -34 -0.08 3,768 5.93 0.2177
2025-07-17 2025-06-30 13F MERCK COMMON STOCK 58933Y105 44,928 -1,826 -3.91 3,556 -15.25 0.2293
2025-04-24 2025-03-31 13F MERCK COMMON STOCK 58933Y105 46,754 23,622 102.12 4,197 82.36 0.2922
2025-01-27 2024-12-31 13F MERCK COMMON STOCK 58933Y105 23,132 2,316 11.13 2,301 -2.62 0.1583
2024-10-21 2024-09-30 13F MERCK COMMON STOCK 58933Y105 20,816 330 1.61 2,364 -6.82 0.1638
2024-07-19 2024-06-30 13F MERCK COMMON STOCK 58933Y105 20,486 254 1.26 2,536 -4.98 0.1853
2024-04-22 2024-03-31 13F MERCK COMMON STOCK 58933Y105 20,232 996 5.18 2,670 27.28 0.2010
2024-01-31 2023-12-31 13F MERCK COMMON STOCK 58933Y105 19,236 1,779 10.19 2,097 16.69 0.1682
2023-10-31 2023-09-30 13F MERCK COMMON STOCK 58933Y105 17,457 -179 -1.01 1,797 -11.70 0.1634
2023-07-28 2023-06-30 13F MERCK COMMON STOCK 58933Y105 17,636 402 2.33 2,035 11.02 0.1729
2023-05-02 2023-03-31 13F MERCK COMMON STOCK 58933Y105 17,234 -124 -0.71 1,834 -4.78 0.1640
2023-02-03 2022-12-31 13F MERCK COMMON STOCK 58933Y105 17,358 -1,580 -8.34 1,926 18.03 0.1848
2022-10-31 2022-09-30 13F MERCK COMMON STOCK 58933Y105 18,938 147 0.78 1,631 -4.84 0.1804
2022-08-05 2022-06-30 13F MERCK COMMON STOCK 58933Y105 18,791 -125 -0.66 1,714 10.44 0.1724
2022-04-11 2022-03-31 13F MERCK COMMON STOCK 58933Y105 18,916 -1,452 -7.13 1,552 -0.58 0.1337
2022-02-07 2021-12-31 13F MERCK COMMON STOCK 58933Y105 20,368 1,072 5.56 1,561 7.66 0.1327
2021-11-10 2021-09-30 13F MERCK COMMON STOCK 58933Y105 19,296 -1,070 -5.25 1,450 -8.46 0.1401
2021-07-20 2021-06-30 13F MERCK COMMON STOCK 58933Y105 20,366 265 1.32 1,584 2.19 0.1579
2021-04-30 2021-03-31 13F MERCK COMMON STOCK 58933Y105 20,101 2,691 15.46 1,550 8.85 0.1761
2021-02-12 2020-12-31 13F MERCK COMMON STOCK 58933Y105 17,410 -5,047 -22.47 1,424 -23.56 0.1845
2020-11-09 2020-09-30 13F MERCK COMMON STOCK 58933Y105 22,457 -72 -0.32 1,863 6.88 0.3021
2020-08-11 2020-06-30 13F MERCK COMMON STOCK 58933Y105 22,529 2,277 11.24 1,743 11.87 0.3131
2020-05-07 2020-03-31 13F MERCK COMMON STOCK 58933Y105 20,252 987 5.12 1,558 -8.68 0.3660
2020-01-31 2019-12-31 13F MERCK COMMON STOCK 58933Y105 19,265 1,298 7.22 1,706 12.76 0.2995
2019-11-13 2019-09-30 13F MERCK COMMON STOCK 58933Y105 17,967 -8,500 -32.12 1,513 -31.82 0.2934
2019-08-02 2019-06-30 13F MERCK COMMON STOCK 58933Y105 26,467 -788 -2.89 2,219 -2.12 0.4228
2019-05-06 2019-03-31 13F MERCK COMMON STOCK 58933Y105 27,255 -28 -0.10 2,267 8.78 0.4642
2019-02-13 2018-12-31 13F MERCK COMMON STOCK 58933Y105 27,283 182 0.67 2,084 8.37 0.4748
2018-10-25 2018-09-30 13F MERCK & CO., INC. COMMON STOCK 58933Y105 27,101 878 3.35 1,923 20.79 0.3845
2018-08-07 2018-06-30 13F MERCK & CO., INC. COMMON STOCK 58933Y105 26,223 -835 -3.09 1,592 0.00 0.3304
2018-05-09 2018-03-31 13F MERCK & CO., INC. COMMON STOCK 58933Y105 27,058 2,670 10.95 1,592 18.10 0.3804
2018-01-22 2017-12-31 13F MERCK & CO., INC. COMMON STOCK 58933Y105 24,388 -796 -3.16 1,348 -16.17 0.3172
2017-11-08 2017-09-30 13F MERCK & CO., INC. COMMON STOCK 58933Y105 25,184 570 2.32 1,608 1.90 0.4130
2017-07-31 2017-06-30 13F MERCK & CO., INC. COMMON STOCK 58933Y105 24,614 795 3.34 1,578 4.30 0.4321
2017-04-26 2017-03-31 13F MERCK & CO., INC. COMMON STOCK 58933Y105 23,819 -232 -0.96 1,513 2.86 0.4380
2017-01-27 2016-12-31 13F MERCK & CO., INC. COMMON STOCK 58933Y105 24,051 907 3.92 1,471 1.87 0.4837
2016-10-24 2016-09-30 13F MERCK & CO., INC. COMMON STOCK 58933Y105 23,144 -4,638 -16.69 1,444 -7.61 0.5002
2016-07-20 2016-06-30 13F MERCK & CO., INC. COMMON STOCK 58933Y105 27,782 -87 -0.31 1,563 6.04 0.5847
2016-05-13 2016-03-31 13F MERCK COMMON STOCK 58933Y105 27,869 568 2.08 1,474 2.22 0.5887
2016-01-26 2015-12-31 13F MERCK COMMON STOCK 58933Y105 27,301 18,390 206.37 1,442 227.73 0.5999
2015-10-29 2015-09-30 13F MERCK & CO., INC. COMMON STOCK 58933Y105 8,911 0 0.00 440 -16.19 0.2316
2015-08-14 2015-06-30 13F/A-1 MERCK & CO., INC. COMMON STOCK 58933Y105 8,911 0 0.00 525 -1.13 0.2485
2015-07-14 2015-06-30 13F MERCK & CO., INC. COMMON STOCK 58933Y105 8,911 515
2015-05-12 2015-03-31 13F MERCK & CO., INC. COMMON STOCK 58933Y105 8,911 0 0.00 531 4.94 0.2453
2015-02-24 2014-12-31 13F MERCK & CO., INC. COMMON STOCK 58933Y105 8,911 0 0.00 506 -5.60 0.2618
2014-10-09 2014-09-30 13F MERCK & CO., INC. COMMON STOCK 58933Y105 8,911 0 0.00 536 4.08 0.3145
2014-07-14 2014-06-30 13F MERCK & CO., INC. COMMON STOCK 58933Y105 8,911 0 0.00 515 1.78 0.3132
2014-04-10 2014-03-31 13F MERCK & CO., INC. COMMON STOCK 58933Y105 8,911 0 0.00 506 13.45 0.3312
2014-01-27 2013-12-31 13F MERCK & CO., INC. COMMON STOCK 58933Y105 8,911 8,911 446 0.3152
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.