Merck & Co., Inc.
CH ˙ SWX ˙ US58933Y1055
SecurityCH:MRK / Merck & Co., Inc.
InstitutionCourier Capital Llc
Latest Disclosed Ownership54,593 shares
Latest Disclosed Value $ 6,567,035
Courier Capital Llc reports 0.43% increase in ownership of MRK / Merck & Co., Inc.

On April 23, 2026 - Courier Capital Llc filed a 13F-HR/A form disclosing ownership of 54,593 shares of Merck & Co., Inc. (CH:MRK) valued at $6,567,035 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 54,358 shares of Merck & Co., Inc.. This represents a change in shares of 0.43% 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)
2026-04-23 2026-03-31 13F/A-1 MERCK COM 58933Y105 54,593 235 0.43 6,567 14.79 0.3671
2026-04-20 2026-03-31 13F MERCK COM 58933Y105 54,593 235 0.43 6,567 14.79 0.3671
2026-01-29 2025-12-31 13F MERCK COM 58933Y105 54,358 -1,536 -2.75 5,722 21.96 0.3213
2025-10-29 2025-09-30 13F MERCK COM 58933Y105 55,894 -2,248 -3.87 4,691 1.93 0.2688
2025-07-28 2025-06-30 13F MERCK COM 58933Y105 58,142 -8,424 -12.66 4,603 -22.97 0.2794
2025-04-14 2025-03-31 13F MERCK COM 58933Y105 66,566 -459 -0.68 5,975 -10.39 0.3910
2025-01-13 2024-12-31 13F MERCK COM 58933Y105 67,025 -3,191 -4.54 6,668 -16.38 0.4600
2024-10-22 2024-09-30 13F MERCK COM 58933Y105 70,216 -346 -0.49 7,974 -8.72 0.5464
2024-07-23 2024-06-30 13F MERCK COM 58933Y105 70,562 -576 -0.81 8,736 -6.94 0.6941
2024-04-16 2024-03-31 13F MERCK COM 58933Y105 71,138 -1,377 -1.90 9,387 18.73 0.6790
2024-01-17 2023-12-31 13F MERCK COM 58933Y105 72,515 -866 -1.18 7,906 4.65 0.6001
2023-10-13 2023-09-30 13F MERCK COM 58933Y105 73,381 -1,433 -1.92 7,555 -12.49 0.6263
2023-07-31 2023-06-30 13F MERCK COM 58933Y105 74,814 15,161 25.42 8,633 36.02 0.6799
2023-05-18 2023-03-31 13F MERCK COM 58933Y105 59,653 -1,049 -1.73 6,346 -5.76 0.7012
2023-01-24 2022-12-31 13F MERCK COM 58933Y105 60,702 -965 -1.56 6,735 26.79 0.7761
2022-10-18 2022-09-30 13F MERCK COM 58933Y105 61,667 -989 -1.58 5,311 -7.02 0.6580
2022-07-20 2022-06-30 13F MERCK COM 58933Y105 62,656 -2,396 -3.68 5,712 7.03 0.6690
2022-05-02 2022-03-31 13F MERCK COM 58933Y105 65,052 -4,464 -6.42 5,337 0.17 0.5336
2022-01-18 2021-12-31 13F MERCK COM 58933Y105 69,516 -29 -0.04 5,328 1.99 0.4954
2021-10-14 2021-09-30 13F MERCK COM 58933Y105 69,545 3,174 4.78 5,224 1.20 0.4971
2021-07-12 2021-06-30 13F MERCK COM 58933Y105 66,371 -3,436 -4.92 5,162 -4.07 0.4910
2021-04-12 2021-03-31 13F MERCK & CO. COM 58933Y105 69,807 -1,048 -1.48 5,381 -7.16 0.5434
2021-02-10 2020-12-31 13F MERCK & CO. COM 58933Y105 70,855 668 0.95 5,796 2.77 0.6288
2020-11-09 2020-09-30 13F MERCK & CO. COM 58933Y105 70,187 -1,563 -2.18 5,640 -0.23 0.6755
2020-07-06 2020-06-30 13F MERCK & CO. COM 58933Y105 71,750 1,780 2.54 5,653 2.84 0.7275
2020-04-22 2020-03-31 13F MERCK & CO. COM 58933Y105 69,970 -9,033 -11.43 5,497 -22.15 0.8157
2020-01-10 2019-12-31 13F MERCK COM 58933Y105 79,003 524 0.67 7,061 8.75 0.8285
2019-10-04 2019-09-30 13F MERCK COM 58933Y105 78,479 793 1.02 6,493 -0.32 0.8453
2019-07-16 2019-06-30 13F MERCK COM 58933Y105 77,686 -676 -0.86 6,514 -0.05 0.8331
2019-04-25 2019-03-31 13F MERCK COM 58933Y105 78,362 2,249 2.95 6,517 12.05 0.8473
2019-02-08 2018-12-31 13F MERCK COM 58933Y105 76,113 -3,211 -4.05 5,816 3.36 0.8520
2018-10-12 2018-09-30 13F MERCK COM 58933Y105 79,324 -2,768 -3.37 5,627 12.92 0.6884
2018-07-19 2018-06-30 13F MERCK COM 58933Y105 82,092 -435 -0.53 4,983 10.86 0.6422
2018-04-27 2018-03-31 13F MERCK COM 58933Y105 82,527 -150 -0.18 4,495 -3.37 0.5925
2018-01-25 2017-12-31 13F MERCK COM 58933Y105 82,677 880 1.08 4,652 -11.19 0.5974
2017-11-03 2017-09-30 13F MERCK COM 58933Y105 81,797 64,239 365.87 5,238 365.60 0.7324
2017-08-10 2017-06-30 13F MERCK COM 58933Y105 17,558 -10 -0.06 1,125 0.81 0.1927
2017-04-19 2017-03-31 13F MERCK & CO INC COM 58933Y105 17,568 -1,376 -7.26 1,116 0.09 0.1963
2017-01-31 2016-12-31 13F MERCK & CO INC COM 58933Y105 18,944 -217 -1.13 1,115 -6.77 0.2126
2016-11-15 2016-09-30 13F MERCK & CO INC COM 58933Y105 19,161 -181 -0.94 1,196 7.36 0.2367
2016-08-01 2016-06-30 13F MERCK & CO INC COM 58933Y105 19,342 188 0.98 1,114 9.97 0.2225
2016-05-16 2016-03-31 13F MERCK & CO INC COM 58933Y105 19,154 78 0.41 1,013 0.50 0.2110
2016-02-10 2015-12-31 13F MERCK & CO INC COM 58933Y105 19,076 -3,407 -15.15 1,008 -9.19 0.2166
2015-10-21 2015-09-30 13F MERCK & CO INC COM 58933Y105 22,483 203 0.91 1,110 -12.46 0.2445
2015-08-03 2015-06-30 13F MERCK & CO INC COM 58933Y105 22,280 1,288 6.14 1,268 5.05 0.2553
2015-04-28 2015-03-31 13F MERCK & CO INC COM 58933Y105 20,992 903 4.49 1,207 5.78 0.2385
2015-01-22 2014-12-31 13F MERCK & CO INC COM 58933Y105 20,089 -304 -1.49 1,141 -5.62 0.2295
2014-11-04 2014-09-30 13F MERCK & CO INC COM 58933Y105 20,393 -460 -2.21 1,209 0.25 0.2446
2014-08-06 2014-06-30 13F MERCK & CO INC COM 58933Y105 20,853 819 4.09 1,206 6.07 0.2384
2014-05-02 2014-03-31 13F MERCK & CO INC COM 58933Y105 20,034 -373 -1.83 1,137 11.36 0.2343
2014-02-14 2013-12-31 13F MERCK & CO INC COM 58933Y105 20,407 4 0.02 1,021 5.15 0.2176
2013-11-14 2013-09-30 13F MERCK & CO INC COM 58933Y105 20,403 -2,316 -10.19 971 -7.96 0.2229
2013-08-01 2013-06-30 13F MERCK & CO INC COM 58933Y105 22,719 22,719 1,055 0.2628
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.