Merck & Co., Inc.
BG ˙ BUL ˙ US58933Y1055
SecurityBG:6MK / Merck & Co., Inc.
InstitutionBOK Financial Private Wealth, Inc.
Latest Disclosed Ownership3,963 shares
Latest Disclosed Value $ 480,339
BOK Financial Private Wealth, Inc. reports 11.24% decrease in ownership of 6MK / Merck & Co., Inc.

On May 12, 2026 - BOK Financial Private Wealth, Inc. filed a 13F-HR form disclosing ownership of 3,963 shares of Merck & Co., Inc. (BG:6MK) valued at $480,339 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 4,465 shares of Merck & Co., Inc.. This represents a change in shares of -11.24% 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 3,963 -502 -11.24 480 1.48 0.0290
2026-02-06 2025-12-31 13F MERCK COM 58933Y105 4,465 -3 -0.07 474 24.80 0.0290
2025-11-07 2025-09-30 13F MERCK COM 58933Y105 4,468 -1,336 -23.02 379 -18.32 0.0239
2025-08-07 2025-06-30 13F MERCK COM 58933Y105 5,804 -298 -4.88 464 -16.09 0.0310
2025-05-14 2025-03-31 13F MERCK COM 58933Y105 6,102 -1,671 -21.50 553 -29.01 0.0415
2025-02-07 2024-12-31 13F MERCK COM 58933Y105 7,773 570 7.91 780 -5.35 0.0566
2024-11-13 2024-09-30 13F MERCK COM 58933Y105 7,203 483 7.19 824 -1.67 0.0596
2024-08-14 2024-06-30 13F MERCK COM 58933Y105 6,720 195 2.99 837 -3.35 0.0608
2024-05-01 2024-03-31 13F MERCK COM 58933Y105 6,525 165 2.59 866 24.07 0.0645
2024-01-30 2023-12-31 13F MERCK COM 58933Y105 6,360 -120 -1.85 698 4.02 0.0567
2023-10-13 2023-09-30 13F MERCK COM 58933Y105 6,480 -214 -3.20 672 -13.64 0.0588
2023-08-08 2023-06-30 13F MERCK COM 58933Y105 6,694 790 13.38 777 22.94 0.0634
2023-04-24 2023-03-31 13F MERCK COM 58933Y105 5,904 51 0.87 632 -3.22 0.0508
2023-02-02 2022-12-31 13F MERCK COM 58933Y105 5,853 328 5.94 654 36.04 0.0543
2022-11-07 2022-09-30 13F/A-1 MERCK COM 58933Y105 5,525 28 0.51 480 -4.95 0.0432
2022-11-04 2022-09-30 13F MERCK COM 58933Y105 5,327 -170 448 0.0625
2022-08-15 2022-06-30 13F MERCK COM 58933Y105 5,497 -13,399 -70.91 505 -67.42 0.0449
2022-05-09 2022-03-31 13F MERCK COM 58933Y105 18,896 2,114 12.60 1,550 20.53 0.1101
2022-02-15 2021-12-31 13F MERCK COM 58933Y105 16,782 713 4.44 1,286 6.55 0.0886
2021-11-15 2021-09-30 13F/A-1 MERCK COM 58933Y105 16,069 2,040 14.54 1,207 10.63 0.0962
2021-11-09 2021-09-30 13F MERCK COM 58933Y105 5,327 -8,702 448 0.0625
2021-08-03 2021-06-30 13F MERCK COM 58933Y105 14,029 3,944 39.11 1,091 40.41 0.0888
2021-05-12 2021-03-31 13F MERCK COM 58933Y105 10,085 -510 -4.81 777 -10.38 0.0707
2021-02-01 2020-12-31 13F MERCK COM 58933Y105 10,595 4,515 74.26 867 72.02 0.0826
2020-11-06 2020-09-30 13F MERCK COM 58933Y105 6,080 558 10.11 504 18.03 0.0525
2020-08-13 2020-06-30 13F MERCK COM 58933Y105 5,522 853 18.27 427 18.94 0.0447
2020-05-07 2020-03-31 13F MERCK COM 58933Y105 4,669 -428 -8.40 359 -22.63 0.0436
2020-02-05 2019-12-31 13F MERCK COM 58933Y105 5,097 -230 -4.32 464 3.57 0.0391
2019-11-08 2019-09-30 13F MERCK COM 58933Y105 5,327 750 16.39 448 16.67 0.0625
2019-08-01 2019-06-30 13F Merck COM 58933Y105 4,577 689 17.72 384 18.89 0.0561
2019-04-30 2019-03-31 13F Merck COM 58933Y105 3,888 4 0.10 323 8.75 0.0431
2019-02-13 2018-12-31 13F Merck COM 58933Y105 3,884 3,884 297 0.0403
2017-11-06 2017-09-30 13F MERCK COM 58933Y105 0 -3,994 -100.00 0 -100.00
2017-07-27 2017-06-30 13F MERCK COM 58933Y105 3,994 -2,478 -38.29 256 -37.71 0.0370
2017-05-08 2017-03-31 13F MERCK COM 58933Y105 6,472 -797 -10.96 411 -3.97 0.0581
2017-02-08 2016-12-31 13F MERCK COM 58933Y105 7,269 -783 -9.72 428 -14.91 0.0649
2016-11-07 2016-09-30 13F MERCK COM 58933Y105 8,052 -2,032 -20.15 503 -13.43 0.0762
2016-08-10 2016-06-30 13F MERCK COM 58933Y105 10,084 10,084 0.00 581 0.0924
2016-05-12 2016-03-31 13F MERCK & CO INC COM 58933Y105 0 0 0 0.0000
2016-02-08 2015-12-31 13F MERCK & CO INC COM 58933Y105 0 -4,391 -100.00 0 -100.00
2015-10-22 2015-09-30 13F MERCK & CO INC COM 58933Y105 4,391 0 0.00 217 -13.20 0.0381
2015-07-16 2015-06-30 13F MERCK & CO INC COM 58933Y105 4,391 4,391 250 0.0416
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.