Merck & Co., Inc.
BG ˙ BUL ˙ US58933Y1055
SecurityBG:6MK / Merck & Co., Inc.
InstitutionSOUTH STATE Corp
Latest Disclosed Ownership30,236 shares
Latest Disclosed Value $ 3,637,089
SOUTH STATE Corp reports 0.37% decrease in ownership of 6MK / Merck & Co., Inc.

On May 5, 2026 - SOUTH STATE Corp filed a 13F-HR form disclosing ownership of 30,236 shares of Merck & Co., Inc. (BG:6MK) valued at $3,637,089 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 30,349 shares of Merck & Co., Inc.. This represents a change in shares of -0.37% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-05 2026-03-31 13F MERCK COM 58933Y105 30,236 -113 -0.37 3,637 13.87 0.0750
2026-02-11 2025-12-31 13F MERCK COM 58933Y105 30,349 -1,692 -5.28 3,195 18.78 0.1429
2025-11-05 2025-09-30 13F MERCK COM 58933Y105 32,041 -3,641 -10.20 2,689 -4.78 0.1239
2025-08-06 2025-06-30 13F MERCK COM 58933Y105 35,682 1,436 4.19 2,825 -8.10 0.1235
2025-05-12 2025-03-31 13F MERCK COM 58933Y105 34,246 1,696 5.21 3,074 -5.10 0.1405
2025-02-10 2024-12-31 13F MERCK & CO INC COM COM 58933Y105 32,550 -1,494 -4.39 3,238 -16.24 0.2122
2024-11-08 2024-09-30 13F Merck Com 58933Y105 34,044 -95 -0.28 3,866 -8.52 0.2664
2024-08-02 2024-06-30 13F MERCK COM 58933Y105 34,139 -467 -1.35 4,226 -7.45 0.3086
2024-05-06 2024-03-31 13F Merck Com 58933Y105 34,606 124 0.36 4,566 21.47 0.3557
2024-02-06 2023-12-31 13F Merck Com 58933Y105 34,482 -1,304 -3.64 3,759 2.04 0.3206
2023-11-07 2023-09-30 13F Merck Com 58933Y105 35,786 -264 -0.73 3,684 -11.42 0.3496
2023-08-08 2023-06-30 13F Merck Com 58933Y105 36,050 693 1.96 4,160 10.58 0.3722
2023-05-08 2023-03-31 13F Merck Com 58933Y105 35,357 104 0.30 3,762 -3.84 0.3472
2023-02-10 2022-12-31 13F Merck Com 58933Y105 35,253 619 1.79 3,911 31.11 0.3618
2022-11-07 2022-09-30 13F Merck Common Stock 58933Y105 34,634 436 1.27 2,983 -4.30 0.2973
2022-08-05 2022-06-30 13F Merck Common Stock 58933Y105 34,198 5,217 18.00 3,117 31.02 0.2926
2022-08-04 2022-03-31 13F/A-1 Merck Common Stock 58933Y105 28,981 1,689 6.19 2,379 13.77 0.1892
2022-05-06 2022-03-31 13F Merck Common Stock 58933Y105 28,981 1,689 2,379 0.1147
2022-05-06 2022-03-31 13F Merck Common Stock 58933Y105 1,800 148
2022-05-06 2022-03-31 13F Merck Common Stock 58933Y105 20,962 1,720
2022-02-11 2021-12-31 13F Merck Common Stock 58933Y105 27,292 24 0.09 2,091 2.10 0.1628
2021-11-10 2021-09-30 13F Merck Common Stock 58933Y105 27,268 -1,619 -5.60 2,048 -8.82 0.1723
2021-08-10 2021-06-30 13F MERCK COMMON STOCK 58933Y105 28,887 -1,777 -5.80 2,246 -4.99 0.1936
2021-05-12 2021-03-31 13F MERCK & CO. COMMON STOCK 58933Y105 30,664 -3,067 -9.09 2,364 -14.32 0.2209
2021-02-10 2020-12-31 13F MERCK & CO. COMMON STOCK 58933Y105 33,731 -484 -1.41 2,759 -2.75 0.2715
2020-11-10 2020-09-30 13F MERCK & CO. COMMON STOCK 58933Y105 34,215 1,565 4.79 2,837 12.36 0.2961
2020-08-11 2020-06-30 13F MERCK COMMON STOCK 58933Y105 32,650 332 1.03 2,525 1.57 0.3094
2020-05-04 2020-03-31 13F MERCK COMMON STOCK 58933Y105 32,318 -2,793 -7.95 2,486 -22.14 0.3691
2020-02-05 2019-12-31 13F MERCK COMMON STOCK 58933Y105 35,111 -1,277 -3.51 3,193 4.24 0.3674
2019-11-08 2019-09-30 13F MERCK COMMON STOCK 58933Y105 36,388 -2,665 -6.82 3,063 -6.44 0.3832
2019-08-13 2019-06-30 13F MERCK COMMON STOCK 58933Y105 39,053 -6,607 -14.47 3,274 -13.77 0.3769
2019-05-15 2019-03-31 13F MERCK COMMON STOCK 58933Y105 45,660 60 0.13 3,797 8.98 0.3907
2019-02-11 2018-12-31 13F MERCK COMMON STOCK 58933Y105 45,600 1,114 2.50 3,484 10.39 0.4026
2018-11-08 2018-09-30 13F MERCK COMMON STOCK 58933Y105 44,486 -5,097 -10.28 3,156 4.85 0.3247
2018-08-03 2018-06-30 13F MERCK COMMON STOCK 58933Y105 49,583 -1,705 -3.32 3,010 7.77 0.3383
2018-05-11 2018-03-31 13F MERCK COMMON STOCK 58933Y105 51,288 -2,303 -4.30 2,793 -7.42 0.3215
2018-02-12 2017-12-31 13F MERCK COMMON STOCK 58933Y105 53,591 3,946 7.95 3,017 -5.10 0.3257
2017-11-09 2017-09-30 13F MERCK COMMON STOCK 58933Y105 49,645 -741 -1.47 3,179 -1.52 0.3562
2017-08-10 2017-06-30 13F MERCK COMMON STOCK 58933Y105 50,386 -2,273 -4.32 3,228 -3.53 0.4157
2017-05-09 2017-03-31 13F MERCK COMMON STOCK 58933Y105 52,659 -5,370 -9.25 3,346 -2.08 0.4365
2017-02-08 2016-12-31 13F MERCK COMMON STOCK 58933Y105 58,029 -594 -1.01 3,417 -6.61 0.4907
2016-11-09 2016-09-30 13F MERCK COMMON STOCK 58933Y105 58,623 -18,678 -24.16 3,659 -17.83 0.5577
2016-08-12 2016-06-30 13F MERCK COMMON STOCK 58933Y105 77,301 -871 -1.11 4,453 7.66 0.6675
2016-05-11 2016-03-31 13F MERCK COMMON STOCK 58933Y105 78,172 -6,406 -7.57 4,136 -7.43 0.6429
2016-02-12 2015-12-31 13F MERCK COMMON STOCK 58933Y105 84,578 10,020 13.44 4,468 21.31 0.7006
2015-11-06 2015-09-30 13F MERCK COMMON STOCK 58933Y105 74,558 -3,167 -4.07 3,683 -16.79 0.5631
2015-08-12 2015-06-30 13F MERCK COMMON STOCK 58933Y105 77,725 4,190 5.70 4,426 4.73 0.6162
2015-05-07 2015-03-31 13F MERCK COMMON STOCK 58933Y105 73,535 12,396 20.28 4,226 21.68 0.6005
2015-02-12 2014-12-31 13F MERCK COMMON STOCK 58933Y105 61,139 12,831 26.56 3,473 21.26 0.5441
2014-10-29 2014-09-30 13F MERCK COMMON STOCK 58933Y105 48,308 6,271 14.92 2,864 17.81 0.4367
2014-08-15 2014-06-30 13F MERCK COMMON STOCK 58933Y105 42,037 -198 -0.47 2,431 1.38 0.4010
2014-05-15 2014-03-31 13F MERCK COMMON STOCK 58933Y105 42,235 377 0.90 2,398 14.41 0.3863
2014-02-14 2013-12-31 13F MERCK COMMON STOCK 58933Y105 41,858 2,432 6.17 2,096 11.67 0.3468
2013-11-14 2013-09-30 13F MERCK COMMON STOCK 58933Y105 39,426 4,629 13.30 1,877 16.15 0.3482
2013-08-13 2013-06-30 13F MERCK COMMON STOCK 58933Y105 34,797 34,797 1,616 0.3428
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.