Merck & Co., Inc.
BG ˙ BUL ˙ US58933Y1055
SecurityBG:6MK / Merck & Co., Inc.
InstitutionPeoples Financial Services Corp.
Latest Disclosed Ownership22,233 shares
Latest Disclosed Value $ 2,674,398
Peoples Financial Services Corp. reports 0.65% decrease in ownership of 6MK / Merck & Co., Inc.

On April 20, 2026 - Peoples Financial Services Corp. filed a 13F-HR form disclosing ownership of 22,233 shares of Merck & Co., Inc. (BG:6MK) valued at $2,674,398 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 22,378 shares of Merck & Co., Inc.. This represents a change in shares of -0.65% 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)
2026-04-20 2026-03-31 13F MERCK & CO INC COMMON STOCK 58933Y105 22,233 -145 -0.65 2,674 13.55 1.2666
2026-01-26 2025-12-31 13F MERCK & CO INC COMMON STOCK 58933Y105 22,378 -400 -1.76 2,356 23.23 1.0986
2025-10-28 2025-09-30 13F MERCK & CO INC COMMON STOCK 58933Y105 22,778 0 0.00 1,912 6.05 0.8633
2025-07-17 2025-06-30 13F MERCK & CO INC COMMON STOCK 58933Y105 22,778 122 0.54 1,803 -11.36 0.8910
2025-04-30 2025-03-31 13F MERCK & CO INC COMMON STOCK 58933Y105 22,656 100 0.44 2,034 -9.36 0.9769
2025-01-14 2024-12-31 13F MERCK & CO INC COMMON STOCK 58933Y105 22,556 -201 -0.88 2,244 -13.20 1.0395
2024-10-16 2024-09-30 13F MERCK & CO INC COMMON STOCK 58933Y105 22,757 -159 -0.69 2,584 -8.89 1.1710
2024-07-25 2024-06-30 13F MERCK & CO INC COMMON STOCK 58933Y105 22,916 -212 -0.92 2,837 -7.05 1.2832
2024-04-17 2024-03-31 13F MERCK & CO INC COMMON STOCK 58933Y105 23,128 -60 -0.26 3,052 20.74 1.3247
2024-01-24 2023-12-31 13F MERCK & CO INC COMMON STOCK 58933Y105 23,188 0 0.00 2,528 5.87 1.0959
2023-10-13 2023-09-30 13F MERCK & CO INC COMMON STOCK 58933Y105 23,188 1,294 5.91 2,387 -5.50 1.1245
2023-07-11 2023-06-30 13F MERCK & CO INC COMMON STOCK 58933Y105 21,894 -189 -0.86 2,526 7.54 1.1331
2023-04-13 2023-03-31 13F MERCK & CO INC COMMON STOCK 58933Y105 22,083 -193 -0.87 2,349 -4.94 1.0973
2023-01-12 2022-12-31 13F MERCK & CO INC COMMON STOCK 58933Y105 22,276 -108 -0.48 2,472 28.16 1.1567
2022-10-07 2022-09-30 13F MERCK & CO INC COMMON STOCK 58933Y105 22,384 -111 -0.49 1,928 -6.00 0.9946
2022-07-07 2022-06-30 13F MERCK & CO INC COMMON STOCK 58933Y105 22,495 -265 -1.16 2,051 9.86 0.9723
2022-04-15 2022-03-31 13F MERCK & CO INC COMMON STOCK 58933Y105 22,760 -735 -3.13 1,867 3.72 0.8074
2022-01-19 2021-12-31 13F MERCK & CO INC COMMON STOCK 58933Y105 23,495 -5,460 -18.86 1,800 -17.24 0.7000
2021-10-15 2021-09-30 13F MERCK & CO INC COMMON STOCK 58933Y105 28,955 1,480 5.39 2,175 1.78 0.9182
2021-07-14 2021-06-30 13F MERCK & CO INC COMMON STOCK 58933Y105 27,475 835 3.13 2,137 4.04 0.8953
2021-04-15 2021-03-31 13F MERCK & CO INC COMMON STOCK 58933Y105 26,640 0 0.00 2,054 -5.74 0.8932
2021-01-12 2020-12-31 13F MERCK & CO INC COMMON STOCK 58933Y105 26,640 1,000 3.90 2,179 2.44 1.0020
2020-10-07 2020-09-30 13F MERCK & CO INC COMMON STOCK 58933Y105 25,640 -120 -0.47 2,127 6.78 1.0709
2020-07-10 2020-06-30 13F MERCK & CO INC COMMON STOCK 58933Y105 25,760 925 3.72 1,992 4.24 1.0495
2020-04-09 2020-03-31 13F MERCK & CO INC COMMON STOCK 58933Y105 24,835 0 0.00 1,911 -15.41 1.1229
2020-01-17 2019-12-31 13F MERCK & CO INC COMMON STOCK 58933Y105 24,835 0 0.00 2,259 8.09 1.0654
2019-10-16 2019-09-30 13F MERCK & CO INC COMMON STOCK 58933Y105 24,835 0 0.00 2,090 0.38 1.0450
2019-07-11 2019-06-30 13F MERCK & CO INC COMMON STOCK 58933Y105 24,835 75 0.30 2,082 1.12 1.0561
2019-04-18 2019-03-31 13F MERCK & CO INC COMMON STOCK 58933Y105 24,760 -50 -0.20 2,059 8.65 1.0530
2019-01-14 2018-12-31 13F MERCK & CO INC COMMON STOCK 58933Y105 24,810 -600 -2.36 1,895 5.10 1.0772
2018-10-12 2018-09-30 13F MERCK & CO INC COMMON STOCK 58933Y105 25,410 7,450 41.48 1,803 65.41 0.9112
2018-07-10 2018-06-30 13F MERCK & CO INC COMMON STOCK 58933Y105 17,960 0 0.00 1,090 11.45 0.6103
2018-04-25 2018-03-31 13F MERCK & CO INC COMMON STOCK 58933Y105 17,960 0 0.00 978 -3.26 0.5593
2018-01-17 2017-12-31 13F MERCK & CO INC COMMON STOCK 58933Y105 17,960 0 0.00 1,011 -12.09 0.5532
2017-10-18 2017-09-30 13F MERCK & CO INC COMMON STOCK 58933Y105 17,960 -200 -1.10 1,150 -1.12 0.6525
2017-07-17 2017-06-30 13F MERCK & CO INC COMMON STOCK 58933Y105 18,160 -200 -1.09 1,163 -0.26 0.6811
2017-04-17 2017-03-31 13F MERCK & CO INC COMMON STOCK 58933Y105 18,360 2,045 12.53 1,166 24.04 0.6951
2017-01-12 2016-12-31 13F MERCK & CO INC COMMON STOCK 58933Y105 16,315 -1,670 -9.29 940 -16.22 0.5804
2016-10-20 2016-09-30 13F MERCK & CO INC COMMON STOCK 58933Y105 17,985 1,670 10.24 1,122 19.36 0.6978
2016-07-20 2016-06-30 13F MERCK & CO INC COMMON STOCK 58933Y105 16,315 -200 -1.21 940 7.67 0.5804
2016-04-14 2016-03-31 13F MERCK & CO INC COMMON STOCK 58933Y105 16,515 900 5.76 873 5.82 0.5500
2016-01-27 2015-12-31 13F MERCK & CO INC COMMON STOCK 58933Y105 15,615 250 1.63 825 8.70 0.5442
2015-10-19 2015-09-30 13F MERCK & CO INC COMMON STOCK 58933Y105 15,365 0 0.00 759 -13.26 0.5407
2015-07-09 2015-06-30 13F MERCK & CO INC COMMON STOCK 58933Y105 15,365 -75 -0.49 875 -1.35 0.5849
2015-04-09 2015-03-31 13F MERCK & CO INC COMMON STOCK 58933Y105 15,440 -150 -0.96 887 0.11 0.5864
2015-01-15 2014-12-31 13F MERCK & CO INC COMMON STOCK 58933Y105 15,590 50 0.32 886 -3.80 0.5783
2014-10-29 2014-09-30 13F MERCK & CO INC COMMON STOCK 58933Y105 15,540 -3,000 -16.18 921 -14.09 0.6223
2014-07-15 2014-06-30 13F MERCK & CO INC COMMON STOCK 58933Y105 18,540 -138 -0.74 1,072 1.13 0.6808
2014-04-07 2014-03-31 13F MERCK & CO INC COMMON STOCK 58933Y105 18,678 -2,050 -9.89 1,060 2.12 0.7868
2014-01-08 2013-12-31 13F MERCK & CO INC COMMON STOCK 58933Y105 20,728 20,728 1,038 0.6844
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.