Merck & Co., Inc.
CH ˙ SWX ˙ US58933Y1055
SecurityCH:MRK / Merck & Co., Inc.
InstitutionHunter Associates Investment Management Llc
Latest Disclosed Ownership11,874 shares
Latest Disclosed Value $ 1,428
Hunter Associates Investment Management Llc reports 1.88% increase in ownership of MRK / Merck & Co., Inc.

On April 27, 2026 - Hunter Associates Investment Management Llc filed a 13F-HR form disclosing ownership of 11,874 shares of Merck & Co., Inc. (CH:MRK) valued at $1,428 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 21, 2026 disclosing 11,655 shares of Merck & Co., Inc.. This represents a change in shares of 1.88% 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)
2026-04-27 2026-03-31 13F MERCK & CO INC NEW COM COM 58933Y105 11,874 219 1.88 1 0.00 0.1889
2026-01-21 2025-12-31 13F MERCK & CO INC NEW COM COM 58933Y105 11,655 35 0.30 1 0.1638
2025-10-30 2025-09-30 13F MERCK & CO INC NEW COM COM 58933Y105 11,620 176 1.54 1 0.1354
2025-08-05 2025-06-30 13F MERCK & CO INC NEW COM COM 58933Y105 11,444 2 0.02 1 -100.00 0.1350
2025-04-30 2025-03-31 13F MERCK & CO INC NEW COM COM 58933Y105 11,442 -56 -0.49 1 0.00 0.1588
2025-01-23 2024-12-31 13F MERCK & CO INC NEW COM COM 58933Y105 11,498 154 1.36 1 0.00 0.1742
2024-10-24 2024-09-30 13F MERCK & CO INC NEW COM COM 58933Y105 11,344 1 0.01 1 0.00 0.2002
2024-08-01 2024-06-30 13F MERCK & CO INC NEW COM COM 58933Y105 11,343 -57 -0.50 1 0.00 0.2359
2024-05-01 2024-03-31 13F MERCK & CO INC NEW COM COM 58933Y105 11,400 2 0.02 1 0.00 0.2521
2024-01-31 2023-12-31 13F MERCK & CO INC NEW COM COM 58933Y105 11,398 -5,085 -30.85 1 0.00 0.2284
2023-11-09 2023-09-30 13F MERCK & CO INC NEW COM COM 58933Y105 16,483 -844 -4.87 2 0.00 0.3461
2023-08-03 2023-06-30 13F MERCK & CO INC NEW COM COM 58933Y105 17,327 -8,744 -33.54 2 -50.00 0.3908
2023-05-02 2023-03-31 13F MERCK & CO INC NEW COM COM 58933Y105 26,071 -2,072 -7.36 3 -33.33 0.5928
2023-02-01 2022-12-31 13F MERCK & CO INC NEW COM COM 58933Y105 28,143 -864 -2.98 3 -99.88 0.7518
2022-11-02 2022-09-30 13F MERCK & CO INC NEW COM COM 58933Y105 29,007 -454 -1.54 2,498 -6.79 0.6468
2022-08-10 2022-06-30 13F MERCK & CO INC NEW COM COM 58933Y105 29,461 24,461 489.22 2,680 553.66 0.6614
2022-04-26 2022-03-31 13F MERCK & CO INC NEW COM COM 58933Y105 5,000 0 0.00 410 7.05 0.1320
2022-01-27 2021-12-31 13F MERCK & CO INC NEW COM COM 58933Y105 5,000 0 0.00 383 1.86 0.1095
2021-11-12 2021-09-30 13F MERCK & CO INC NEW COM COM 58933Y105 5,000 -4,000 -44.44 376 -46.29 0.1208
2021-08-05 2021-06-30 13F/A-1 MERCK & CO INC NEW COM COM 58933Y105 9,000 -21,047 -70.05 700 -69.78 0.2179
2021-08-05 2021-06-30 13F MERCK & CO INC NEW COM COM 58933Y105 30,047 0 2,316 0.5354
2021-05-10 2021-03-31 13F MERCK & CO INC NEW COM COM 58933Y105 30,047 2,765 10.13 2,316 3.76 0.5354
2021-01-29 2020-12-31 13F MERCK & CO INC NEW COM COM 58933Y105 27,282 2,733 11.13 2,232 9.63 0.5490
2020-11-10 2020-09-30 13F Merck & Co Inc New Com COM 58933Y105 24,549 6,421 35.42 2,036 45.22 0.5658
2020-08-13 2020-06-30 13F Merck & Co Inc New Com COM 58933Y105 18,128 2,925 19.24 1,402 19.83 0.4166
2020-05-11 2020-03-31 13F MERCK & CO INC NEW COM COM 58933Y105 15,203 1,178 8.40 1,170 -8.31 0.4534
2020-02-07 2019-12-31 13F MERCK & CO INC NEW COM COM 58933Y105 14,025 3,100 28.38 1,276 38.70 0.3961
2019-11-08 2019-09-30 13F MERCK & CO INC NEW COM COM 58933Y105 10,925 -115 -1.04 920 -0.65 0.3163
2019-08-08 2019-06-30 13F MERCK & CO INC NEW COM COM 58933Y105 11,040 -47 -0.42 926 0.43 0.3186
2019-05-10 2019-03-31 13F MERCK & CO INC NEW COM COM 58933Y105 11,087 -100 -0.89 922 7.84 0.3228
2019-02-11 2018-12-31 13F MERCK & CO INC NEW COM COM 58933Y105 11,187 -1,406 -11.16 855 -4.26 0.3478
2018-11-09 2018-09-30 13F MERCK & CO INC NEW COM COM 58933Y105 12,593 -91 -0.72 893 15.97 0.3079
2018-08-10 2018-06-30 13F MERCK & CO INC NEW COM COM 58933Y105 12,684 0 0.00 770 11.43 0.2781
2018-05-15 2018-03-31 13F/A-1 MERCK & CO INC NEW COM COM 58933Y105 12,684 100 0.79 691 -2.40 0.2580
2018-05-14 2018-03-31 13F MERCK & CO INC NEW COM COM 58933Y105 12,584 708
2018-02-15 2017-12-31 13F MERCK & CO INC NEW COM COM 58933Y105 12,584 100 0.80 708 -11.39 0.2608
2017-11-13 2017-09-30 13F MERCK & CO INC NEW COM COM 58933Y105 12,484 -400 -3.10 799 -3.27 0.3113
2017-08-11 2017-06-30 13F MERCK & CO INC NEW COM COM 58933Y105 12,884 0 0.00 826 0.85 0.3358
2017-05-10 2017-03-31 13F MERCK & CO INC NEW COM COM 58933Y105 12,884 -25 -0.19 819 7.76 0.3445
2017-02-10 2016-12-31 13F MERCK & CO INC NEW COM COM 58933Y105 12,909 546 4.42 760 -1.55 0.3243
2016-11-10 2016-09-30 13F MERCK & CO INC NEW COM COM 58933Y105 12,363 -485 -3.77 772 4.32 0.3317
2016-08-15 2016-06-30 13F MERCK & CO INC NEW COM COM 58933Y105 12,848 0 0.00 740 8.82 0.3206
2016-05-13 2016-03-31 13F MERCK & CO INC NEW COM COM 58933Y105 12,848 775 6.42 680 6.58 0.3105
2016-02-09 2015-12-31 13F MERCK & CO INC NEW COM COM 58933Y105 12,073 0 0.00 638 7.05 0.2803
2015-11-12 2015-09-30 13F MERCK & CO INC NEW COM COM 58933Y105 12,073 200 1.68 596 -11.83 0.2797
2015-08-12 2015-06-30 13F MERCK & CO INC NEW COM COM 58933Y105 11,873 0 0.00 676 -0.88 0.2812
2015-05-12 2015-03-31 13F MERCK & CO INC NEW COM COM 58933Y105 11,873 -400 -3.26 682 -2.15 0.2686
2015-02-13 2014-12-31 13F MERCK & CO INC NEW COM COM 58933Y105 12,273 0 0.00 697 -4.26 0.2682
2014-11-13 2014-09-30 13F MERCK & CO INC NEW COM COM 58933Y105 12,273 0 0.00 728 2.54 0.2839
2014-08-13 2014-06-30 13F MERCK & CO INC NEW COM COM 58933Y105 12,273 -1,166 -8.68 710 -6.95 0.2790
2014-05-14 2014-03-31 13F MERCK & CO INC NEW COM COM 58933Y105 13,439 0 0.00 763 13.37 0.3011
2014-02-14 2013-12-31 13F MERCK & CO INC NEW COM COM 58933Y105 13,439 -2 -0.01 673 5.16 0.2590
2013-11-13 2013-09-30 13F MERCK & CO INC NEW COM COM 58933Y105 13,441 -3,501 -20.66 640 -18.68 0.2667
2013-08-13 2013-06-30 13F MERCK & CO INC NEW COM COM 58933Y105 16,942 16,942 787 0.2917
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.