Merck & Co., Inc.
BG ˙ BUL ˙ US58933Y1055
SecurityBG:6MK / Merck & Co., Inc.
InstitutionHancock Whitney Corp
Latest Disclosed Ownership299,230 shares
Latest Disclosed Value $ 35,683,719
Hancock Whitney Corp reports 2.63% decrease in ownership of 6MK / Merck & Co., Inc.

On May 15, 2026 - Hancock Whitney Corp filed a 13F-HR form disclosing ownership of 299,230 shares of Merck & Co., Inc. (BG:6MK) valued at $35,683,719 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 307,300 shares of Merck & Co., Inc.. This represents a change in shares of -2.63% 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)
2026-05-15 2026-03-31 13F MERCK COM 58933Y105 299,230 -8,070 -2.63 35,684 10.32 0.5920
2026-02-17 2025-12-31 13F MERCK COM 58933Y105 307,300 -8,035 -2.55 32,346 22.22 0.5832
2025-11-17 2025-09-30 13F MERCK COM 58933Y105 315,335 -11,701 -3.58 26,466 2.23 0.4815
2025-08-14 2025-06-30 13F MERCK COM 58933Y105 327,036 291,063 809.12 25,888 701.98 0.4946
2025-05-15 2025-03-31 13F MERCK COM 58933Y105 35,973 665 1.88 3,229 -8.09 0.1054
2025-02-14 2024-12-31 13F MERCK COM 58933Y105 35,308 -1,802 -4.86 3,512 -16.66 0.1112
2024-11-13 2024-09-30 13F MERCK COM 58933Y105 37,110 -1,873 -4.80 4,214 -12.68 0.1358
2024-08-13 2024-06-30 13F MERCK COMMON STOCK 58933Y105 38,983 -14 -0.04 4,826 -6.20 0.1638
2024-05-16 2024-03-31 13F MERCK COMMON STOCK 58933Y105 38,997 3,950 11.27 5,146 34.69 0.1777
2024-02-14 2023-12-31 13F MERCK COM 58933Y105 35,047 -1,643 -4.48 3,821 1.14 0.1418
2023-11-13 2023-09-30 13F MERCK COM 58933Y105 36,690 -1,855 -4.81 3,777 -15.09 0.1557
2023-11-13 2023-06-30 13F/A-1 MERCK COM 58933Y105 38,545 1,800 4.90 4,448 13.79 0.1749
2023-08-10 2023-06-30 13F MERCK COM 58933Y105 38,545 1,800 4 0.1749
2023-11-13 2023-03-31 13F/A-2 MERCK COM 58933Y105 36,745 1,681 4.79 3,909 0.49 0.1568
2023-05-16 2023-03-31 13F/A-1 MERCK COM 58933Y105 36,745 1,681 4 0.0836
2023-05-15 2023-03-31 13F MERCK COM 58933Y105 35,064 0 4 0.0806
2023-11-13 2022-12-31 13F/A-1 MERCK COM 58933Y105 35,064 -532 -1.49 3,890 26.88 0.1502
2023-02-03 2022-12-31 13F MERCK COM 58933Y105 35,064 -532 4 0.1502
2022-10-26 2022-09-30 13F MERCK COM 58933Y105 35,596 699 2.00 3,066 -3.62 0.1311
2022-08-08 2022-06-30 13F MERCK COM 58933Y105 34,897 -667 -1.88 3,181 9.01 0.1272
2022-05-12 2022-03-31 13F MERCK COM 58933Y105 35,564 -1,092 -2.98 2,918 3.88 0.0993
2022-01-25 2021-12-31 13F MERCK COM 58933Y105 36,656 222 0.61 2,809 2.63 0.0883
2021-11-04 2021-09-30 13F MERCK COM 58933Y105 36,434 -2,435 -6.26 2,737 -9.46 0.0957
2021-08-09 2021-06-30 13F MERCK COM 58933Y105 38,869 -647 -1.64 3,023 -0.76 0.0965
2021-05-14 2021-03-31 13F MERCK & CO. COM 58933Y105 39,516 -7,918 -16.69 3,046 -21.49 0.1034
2021-02-09 2020-12-31 13F MERCK & CO. COM 58933Y105 47,434 -1,967 -3.98 3,880 -5.32 0.1295
2020-11-05 2020-09-30 13F MERCK & CO. COM 58933Y105 49,401 -127 -0.26 4,098 7.00 0.1513
2020-07-30 2020-06-30 13F MERCK & CO. COM 58933Y105 49,528 41 0.08 3,830 0.60 0.1468
2020-05-08 2020-03-31 13F MERCK & CO. COM 58933Y105 49,487 7,196 17.02 3,807 -1.01 0.1493
2020-02-06 2019-12-31 13F MERCK COM 58933Y105 42,291 -1,215 -2.79 3,846 5.02 0.1239
2019-10-29 2019-09-30 13F MERCK COM 58933Y105 43,506 -834 -1.88 3,662 -1.53 0.1200
2019-08-29 2019-06-30 13F MERCK COM 58933Y105 44,340 -4,676 -9.54 3,719 -8.78 0.1190
2019-05-13 2019-03-31 13F MERCK COM 58933Y105 49,016 -431 -0.87 4,077 7.89 0.1308
2019-02-14 2018-12-31 13F MERCK COM 58933Y105 49,447 9,149 22.70 3,779 32.23 0.1277
2018-11-14 2018-09-30 13F MERCK COM 58933Y105 40,298 34,154 555.89 2,858 666.22 0.0809
2018-08-14 2018-06-30 13F MERCK COMMON STOCK 58933Y105 6,144 -963 -13.55 373 -3.62 0.0172
2018-05-15 2018-03-31 13F MERCK COMMON STOCK 58933Y105 7,107 -986 -12.18 387 -14.95 0.0173
2018-02-12 2017-12-31 13F MERCK COM 58933Y105 8,093 -16,426 -66.99 455 -71.02 0.0188
2017-11-14 2017-09-30 13F MERCK COM 58933Y105 24,519 -149 -0.60 1,570 -0.70 0.0665
2017-08-11 2017-06-30 13F MERCK COM 58933Y105 24,668 -244 -0.98 1,581 -0.13 0.0668
2017-05-09 2017-03-31 13F MERCK COM 58933Y105 24,912 1,062 4.45 1,583 12.75 0.0660
2017-02-14 2016-12-31 13F MERCK COM 58933Y105 23,850 449 1.92 1,404 -3.90 0.0522
2016-11-08 2016-09-30 13F MERCK COM 58933Y105 23,401 402 1.75 1,461 10.26 0.0578
2016-08-09 2016-06-30 13F MERCK COM 58933Y105 22,999 15,992 228.23 1,325 258.11 0.0553
2016-06-07 2016-03-31 13F/A-1 MERCK COM 58933Y105 7,007 -1,552 -18.13 370 -18.14 0.0155
2016-05-13 2016-03-31 13F MERCK COM 58933Y105 7,007 370
2016-02-12 2015-12-31 13F MERCK COM 58933Y105 8,559 -100 -1.15 452 5.61 0.0189
2015-11-16 2015-09-30 13F MERCK COM 58933Y105 8,659 -17,164 -66.47 428 -71.16 0.0179
2015-08-13 2015-06-30 13F MERCK COM 58933Y105 25,823 0 0.00 1,484 0.00 0.0566
2015-05-14 2015-03-31 13F MERCK COM 58933Y105 25,823 6,924 36.64 1,484 38.30 0.0566
2015-02-17 2014-12-31 13F MERCK COM 58933Y105 18,899 -3,910 -17.14 1,073 -20.64 0.0408
2014-11-13 2014-09-30 13F MERCK COM 58933Y105 22,809 5,413 31.12 1,352 34.39 0.0514
2014-08-14 2014-06-30 13F MERCK COM 58933Y105 17,396 2,890 19.92 1,006 22.24 0.0365
2014-05-15 2014-03-31 13F MERCK COM 58933Y105 14,506 254 1.78 823 15.43 0.0321
2014-02-14 2013-12-31 13F MERCK COM 58933Y105 14,252 345 2.48 713 7.70 0.0293
2013-11-14 2013-09-30 13F MERCK COM 58933Y105 13,907 -13,194 -48.68 662 -47.38 0.0305
2013-08-06 2013-06-30 13F MERCK COM 58933Y105 27,101 27,101 1,258 0.0627
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.