Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionAtlantic Union Bankshares Corp
Latest Disclosed Ownership150,800 shares
Latest Disclosed Value $ 18,139,661
Atlantic Union Bankshares Corp reports 22.08% decrease in ownership of MRK / Merck & Co., Inc.

On May 12, 2026 - Atlantic Union Bankshares Corp filed a 13F-HR form disclosing ownership of 150,800 shares of Merck & Co., Inc. (MX:MRK) valued at $18,139,661 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 193,538 shares of Merck & Co., Inc.. This represents a change in shares of -22.08% 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)
2026-05-12 2026-03-31 13F MERCK COM 58933Y105 150,800 -42,738 -22.08 18,140 -10.96 0.1320
2026-02-04 2025-12-31 13F MERCK COM 58933Y105 193,538 -1,358 -0.70 20,372 24.54 0.3820
2025-11-04 2025-09-30 13F MERCK COM 58933Y105 194,896 632 0.33 16,358 6.37 0.3080
2025-08-06 2025-06-30 13F MERCK COM 58933Y105 194,264 38,822 24.98 15,377 10.21 0.3511
2025-05-05 2025-03-31 13F MERCK & CO INC COM Stock 58933Y105 155,442 -699 -0.45 13,952 -10.17 0.8441
2025-02-07 2024-12-31 13F MERCK & CO INC COM Stock 58933Y105 156,141 -1,249 -0.79 15,533 -13.10 0.9040
2024-11-14 2024-09-30 13F MERCK & CO INC COM Stock 58933Y105 157,390 1,333 0.85 17,873 -7.48 1.0384
2024-07-24 2024-06-30 13F MERCK & CO INC COM Stock 58933Y105 156,057 54,984 54.40 19,320 44.86 1.2045
2024-04-16 2024-03-31 13F MERCK & CO INC COM Stock 58933Y105 101,073 474 0.47 13,337 21.60 1.1237
2024-01-19 2023-12-31 13F MERCK & CO INC COM Stock 58933Y105 100,599 1,206 1.21 10,967 7.18 1.0164
2023-10-20 2023-09-30 13F MERCK & CO INC COM Stock 58933Y105 99,393 -8,351 -7.75 10,233 -17.70 1.0486
2023-07-11 2023-06-30 13F MERCK & CO INC COM Stock 58933Y105 107,744 6,154 6.06 12,433 15.03 1.2396
2023-05-08 2023-03-31 13F MERCK & CO INC COM Stock 58933Y105 101,590 71 0.07 10,808 -4.04 1.1245
2023-02-09 2022-12-31 13F MERCK & CO INC COM Stock 58933Y105 101,519 -4,077 -3.86 11,264 23.85 1.2053
2022-10-25 2022-09-30 13F MERCK & CO INC COM COM 58933Y105 105,596 -5,821 -5.22 9,094 -10.47 1.0440
2022-07-21 2022-06-30 13F MERCK & CO INC COM COM 58933Y105 111,417 -603 -0.54 10,158 10.51 1.0386
2022-04-26 2022-03-31 13F MERCK & CO INC COM COM 58933Y105 112,020 2,046 1.86 9,192 9.07 0.8047
2022-01-19 2021-12-31 13F MERCK & CO INC COM COM 58933Y105 109,974 3,454 3.24 8,428 5.34 0.7145
2021-10-26 2021-09-30 13F MERCK & CO INC COM COM 58933Y105 106,520 3,392 3.29 8,001 -0.24 0.7531
2021-07-26 2021-06-30 13F MERCK & CO INC COM COM 58933Y105 103,128 1,025 1.00 8,020 1.89 0.7747
2021-05-04 2021-03-31 13F MERCK & CO. INC COM COM 58933Y105 102,103 7,785 8.25 7,871 2.01 0.8037
2021-02-01 2020-12-31 13F MERCK & CO. COM 58933Y105 94,318 3,556 3.92 7,716 2.48 0.8012
2020-10-16 2020-09-30 13F MERCK & CO. COM 58933Y105 90,762 4,608 5.35 7,529 13.01 0.8765
2020-07-15 2020-06-30 13F MERCK & CO. COM 58933Y105 86,154 11,470 15.36 6,662 15.94 0.8299
2020-04-10 2020-03-31 13F MERCK & CO. COM 58933Y105 74,684 -42 -0.06 5,746 -15.45 0.8382
2020-01-14 2019-12-31 13F MERCK COM 58933Y105 74,726 386 0.52 6,796 8.60 0.8712
2019-10-17 2019-09-30 13F MERCK COM 58933Y105 74,340 647 0.88 6,258 1.28 0.8375
2019-07-23 2019-06-30 13F MERCK COM 58933Y105 73,693 49,878 209.44 6,179 211.91 0.8300
2019-04-10 2019-03-31 13F MERCK COM 58933Y105 23,815 236 1.00 1,981 9.93 0.5485
2019-01-14 2018-12-31 13F MERCK COM 58933Y105 23,579 -558 -2.31 1,802 5.20 0.5874
2018-10-11 2018-09-30 13F MERCK COM 58933Y105 24,137 -464 -1.89 1,713 14.74 0.5167
2018-07-12 2018-06-30 13F MERCK COM 58933Y105 24,601 -441 -1.76 1,493 9.46 0.4855
2018-04-11 2018-03-31 13F MERCK COM 58933Y105 25,042 -54 -0.22 1,364 -3.40 0.4219
2018-01-10 2017-12-31 13F MERCK COM 58933Y105 25,096 -150 -0.59 1,412 -12.68 0.4370
2017-10-13 2017-09-30 13F MERCK COM 58933Y105 25,246 -935 -3.57 1,617 -3.64 0.5442
2017-07-12 2017-06-30 13F MERCK COM 58933Y105 26,181 178 0.68 1,678 1.57 0.5805
2017-04-10 2017-03-31 13F MERCK COM 58933Y105 26,003 -699 -2.62 1,652 5.09 0.5895
2017-01-10 2016-12-31 13F MERCK COM 58933Y105 26,702 -175 -0.65 1,572 -6.26 0.5846
2016-10-14 2016-09-30 13F MERCK COM 58933Y105 26,877 12,263 83.91 1,677 99.17 0.6394
2016-07-14 2016-06-30 13F MERCK COM 58933Y105 14,614 2,493 20.57 842 31.36 0.3242
2016-04-08 2016-03-31 13F MERCK & CO INC COM 58933Y105 12,121 -49 -0.40 641 -0.31 0.2661
2016-01-11 2015-12-31 13F MERCK & CO INC COM 58933Y105 12,170 -92 -0.75 643 6.28 0.2822
2015-10-28 2015-09-30 13F MERCK & CO INC COM 58933Y105 12,262 1,417 13.07 605 -1.94 0.2809
2015-07-29 2015-06-30 13F MERCK & CO INC COM 58933Y105 10,845 -670 -5.82 617 -6.80 0.2917
2015-04-24 2015-03-31 13F MERCK & CO INC COM 58933Y105 11,515 4,749 70.19 662 72.40 0.3048
2015-01-09 2014-12-31 13F MERCK & CO INC COM 58933Y105 6,766 0 0.00 384 -4.24 0.1709
2014-10-24 2014-09-30 13F MERCK & CO INC COM 58933Y105 6,766 460 7.29 401 9.86 0.1879
2014-08-05 2014-06-30 13F MERCK & CO INC COM 58933Y105 6,306 -10,822 -63.18 365 -55.21 0.1702
2014-08-05 2014-03-31 13F/A-1 MERCK & CO INC COM 58933Y105 17,128 17,128 815 0.3740
2014-05-01 2014-03-31 13F MERCK & CO INC COM 58933Y105 17,128 815
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.