Merck & Co., Inc.
BG ˙ BUL ˙ US58933Y1055
SecurityBG:6MK / Merck & Co., Inc.
InstitutionPflug Koory, LLC
Latest Disclosed Ownership19,792 shares
Latest Disclosed Value $ 2,380,780
Pflug Koory, LLC reports 0.58% increase in ownership of 6MK / Merck & Co., Inc.

On April 21, 2026 - Pflug Koory, LLC filed a 13F-HR form disclosing ownership of 19,792 shares of Merck & Co., Inc. (BG:6MK) valued at $2,380,780 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 20, 2026 disclosing 19,678 shares of Merck & Co., Inc.. This represents a change in shares of 0.58% 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)
2026-04-21 2026-03-31 13F MERCK COM 58933Y105 19,792 114 0.58 2,381 14.92 1.0909
2026-01-20 2025-12-31 13F MERCK COM 58933Y105 19,678 64 0.33 2,071 25.82 0.9664
2025-10-21 2025-09-30 13F MERCK COM 58933Y105 19,614 139 0.71 1,646 6.81 0.7805
2025-07-21 2025-06-30 13F MERCK COM 58933Y105 19,475 499 2.63 1,542 -9.51 0.7827
2025-04-17 2025-03-31 13F MERCK COM 58933Y105 18,976 -47 -0.25 1,703 -9.99 0.9486
2025-01-21 2024-12-31 13F MERCK COM 58933Y105 19,023 40 0.21 1,892 -12.20 0.9578
2025-01-15 2024-09-30 13F MERCK COM 58933Y105 18,983 -2,711 -12.50 2,156 -24.70 1.0596
2024-04-11 2024-03-31 13F MERCK COM 58933Y105 21,694 -68 -0.31 2,863 20.66 1.4083
2024-01-11 2023-12-31 13F MERCK COM 58933Y105 21,762 43 0.20 2,372 6.13 1.2568
2023-10-30 2023-09-30 13F MERCK COM 58933Y105 21,719 -194 -0.89 2,236 -11.59 1.2929
2023-07-21 2023-06-30 13F MERCK COM 58933Y105 21,913 -178 -0.81 2,529 7.57 1.2883
2023-04-20 2023-03-31 13F MERCK COM 58933Y105 22,091 -163 -0.73 2,350 117,400.00 1.2775
2023-01-18 2022-12-31 13F MERCK COM 58933Y105 22,254 -5 -0.02 2 -99.90 1.3727
2022-10-11 2022-09-30 13F MERCK COM 58933Y105 22,259 -1,584 -6.64 1,917 -11.82 1.1668
2022-08-01 2022-06-30 13F MERCK COM 58933Y105 23,843 -48 -0.20 2,174 10.92 1.2545
2022-04-14 2022-03-31 13F MERCK COM 58933Y105 23,891 229 0.97 1,960 8.11 0.9874
2022-01-20 2021-12-31 13F MERCK COM 58933Y105 23,662 552 2.39 1,813 4.44 0.9146
2021-10-19 2021-09-30 13F MERCK COM 58933Y105 23,110 -692 -2.91 1,736 -6.21 0.9492
2021-07-14 2021-06-30 13F MERCK COM 58933Y105 23,802 950 4.16 1,851 5.05 0.9692
2021-07-13 2021-03-31 13F MERCK & CO. COM 58933Y105 22,852 932 4.25 1,762 -1.73 0.9743
2021-01-14 2020-12-31 13F MERCK & CO. COM 58933Y105 21,920 145 0.67 1,793 -0.72 1.0615
2020-10-20 2020-09-30 13F MERCK & CO. COM 58933Y105 21,775 580 2.74 1,806 10.19 1.2202
2020-07-30 2020-06-30 13F MERCK & CO. COM 58933Y105 21,195 -95 -0.45 1,639 0.06 1.2148
2020-04-24 2020-03-31 13F MERCK & CO. COM 58933Y105 21,290 -175 -0.82 1,638 -16.09 1.4560
2020-01-14 2019-12-31 13F MERCK COM 58933Y105 21,465 -180 -0.83 1,952 7.14 1.3798
2019-10-15 2019-09-30 13F MERCK COM 58933Y105 21,645 76 0.35 1,822 0.72 1.3832
2019-08-02 2019-06-30 13F MERCK COM 58933Y105 21,569 -100 -0.46 1,809 0.39 1.3856
2019-04-11 2019-03-31 13F MERCK COM 58933Y105 21,669 -275 -1.25 1,802 7.45 1.4100
2019-01-24 2018-12-31 13F MERCK COM 58933Y105 21,944 0 0.00 1,677 7.71 1.4318
2018-11-06 2018-09-30 13F MERCK COM 58933Y105 21,944 -3,100 -12.38 1,557 2.43 1.2594
2018-08-13 2018-06-30 13F MERCK COM 58933Y105 25,044 3,102 14.14 1,520 27.20 1.2005
2018-08-13 2018-03-31 13F MERCK COM 58933Y105 21,942 -165 -0.75 1,195 -3.94 0.9855
2018-08-13 2017-12-31 13F MERCK COM 58933Y105 22,107 1,475 7.15 1,244 -5.83 0.9838
2018-08-13 2017-09-30 13F MERCK COM 58933Y105 20,632 0 0.00 1,321 -0.08 1.0800
2018-08-13 2017-06-30 13F MERCK COM 58933Y105 20,632 0 0.00 1,322 0.84 1.1169
2018-08-13 2017-03-31 13F MERCK COM 58933Y105 20,632 0 0.00 1,311 7.90 1.1462
2018-08-13 2016-12-31 13F MERCK COM 58933Y105 20,632 20,632 1,215 1.0465
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.