Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionCapital Advisors, Ltd. LLC
Latest Disclosed Ownership4,390 shares
Latest Disclosed Value $ 528
Capital Advisors, Ltd. LLC reports 2.14% decrease in ownership of MRK / Merck & Co., Inc.

On April 16, 2026 - Capital Advisors, Ltd. LLC filed a 13F-HR form disclosing ownership of 4,390 shares of Merck & Co., Inc. (MX:MRK) valued at $528 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 21, 2026 disclosing 4,486 shares of Merck & Co., Inc..

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)
2026-04-16 2026-03-31 13F MERCK COM 58933Y105 4,390 -96 -2.14 1 0.0600
2026-01-21 2025-12-31 13F MERCK COM 58933Y105 4,486 -101 -2.20 0 0.0532
2025-10-16 2025-09-30 13F MERCK COM 58933Y105 4,587 -145 -3.06 0 0.0435
2025-07-24 2025-06-30 13F MERCK COM 58933Y105 4,732 66 1.41 0 0.0463
2025-04-15 2025-03-31 13F MERCK COM 58933Y105 4,666 -388 -7.68 0 0.0552
2025-02-04 2024-12-31 13F MERCK COM 58933Y105 5,054 310 6.53 1 0.0634
2024-10-24 2024-09-30 13F MERCK COM 58933Y105 4,744 -208 -4.20 1 0.0668
2024-07-25 2024-06-30 13F MERCK COM 58933Y105 4,952 263 5.61 1 0.0796
2024-04-18 2024-03-31 13F MERCK COM 58933Y105 4,689 146 3.21 1 0.0807
2024-02-02 2023-12-31 13F MERCK COM 58933Y105 4,543 -29 -0.63 0 0.0695
2023-10-27 2023-09-30 13F MERCK COM 58933Y105 4,572 -41 -0.89 0 0.0722
2023-07-26 2023-06-30 13F MERCK COM 58933Y105 4,613 2,083 82.33 1 0.0795
2023-05-03 2023-03-31 13F MERCK COM 58933Y105 2,530 -1,422 -35.98 0 0.0442
2023-02-07 2022-12-31 13F MERCK COM 58933Y105 3,952 1,685 74.33 0 -100.00 0.0493
2022-11-09 2022-09-30 13F MERCK COM 58933Y105 2,267 -68 -2.91 195 -8.45 0.0380
2022-08-05 2022-06-30 13F MERCK COM 58933Y105 2,335 -101 -4.15 213 6.50 0.0399
2022-05-09 2022-03-31 13F MERCK & CO. COM 58933Y105 2,436 139 6.05 200 13.64 0.0333
2022-02-08 2021-12-31 13F MERCK COM 58933Y105 2,297 245 11.94 176 14.29 0.0284
2021-11-12 2021-09-30 13F MERCK COM 58933Y105 2,052 0 0.00 154 -3.75 0.0275
2021-08-10 2021-06-30 13F MERCK COM 58933Y105 2,052 0 0.00 160 1.27 0.0287
2021-05-13 2021-03-31 13F MERCK COM 58933Y105 2,052 0 0.00 158 -5.95 0.0290
2021-02-10 2020-12-31 13F MERCK COM 58933Y105 2,052 0 0.00 168 -1.18 0.0371
2020-11-03 2020-09-30 13F MERCK COM 58933Y105 2,052 0 0.00 170 6.92 0.0424
2020-08-06 2020-06-30 13F MERCK COM 58933Y105 2,052 -526 -20.40 159 -19.70 0.0420
2020-05-08 2020-03-31 13F MERCK COM 58933Y105 2,578 129 5.27 198 -11.21 0.0621
2020-02-03 2019-12-31 13F MERCK COM 58933Y105 2,449 120 5.15 223 13.78 0.0569
2019-10-23 2019-09-30 13F MERCK COM 58933Y105 2,329 0 0.00 196 0.51 0.0542
2019-07-31 2019-06-30 13F MERCK COM 58933Y105 2,329 200 9.39 195 10.17 0.0551
2019-05-01 2019-03-31 13F MERCK COM 58933Y105 2,129 0 0.00 177 8.59 0.0479
2019-01-29 2018-12-31 13F MERCK COM 58933Y105 2,129 0 0.00 163 7.95 0.0481
2018-10-24 2018-09-30 13F MERCK COM 58933Y105 2,129 0 0.00 151 17.05 0.0426
2018-07-20 2018-06-30 13F MERCK COM 58933Y105 2,129 0 0.00 129 11.21 0.0403
2018-04-23 2018-03-31 13F MERCK COM 58933Y105 2,129 0 0.00 116 -3.33 0.0375
2018-01-16 2017-12-31 13F MERCK COM 58933Y105 2,129 0 0.00 120 -11.76 0.0396
2017-10-25 2017-09-30 13F MERCK COM 58933Y105 2,129 0 0.00 136 0.00 0.0477
2017-07-26 2017-06-30 13F MERCK COM 58933Y105 2,129 0 0.00 136 0.74 0.0500
2017-04-19 2017-03-31 13F MERCK & CO INC NEWCOM COM 58933Y105 2,129 0 0.00 135 8.00 0.0520
2017-01-20 2016-12-31 13F MERCK & CO INC NEWCOM COM 58933Y105 2,129 0 0.00 125 -6.02 0.0516
2016-10-14 2016-09-30 13F MERCK & CO INC NEWCOM COM 58933Y105 2,129 0 0.00 133 8.13 0.0585
2016-07-13 2016-06-30 13F MERCK & CO INC COM 58933Y105 2,129 0 0.00 123 8.85 0.0578
2016-04-15 2016-03-31 13F MERCK & CO INC COM 58933Y105 2,129 0 0.00 113 0.89 0.0562
2016-01-25 2015-12-31 13F MERCK & CO INC COM 58933Y105 2,129 0 0.00 112 6.67 0.0584
2015-10-20 2015-09-30 13F MERCK & CO INC COM 58933Y105 2,129 0 0.00 105 -13.22 0.0579
2015-07-14 2015-06-30 13F MERCK & CO INC COM 58933Y105 2,129 146 7.36 121 6.14 0.0627
2015-04-22 2015-03-31 13F MERCK & CO INC COM 58933Y105 1,983 1,983 0.00 114 0.0591
2015-01-29 2014-12-31 13F MERCK & CO INC COM 58933Y105 0 -1,933 -100.00 0 -100.00
2014-10-29 2014-09-30 13F MERCK & CO INC COM 58933Y105 1,933 0 0.00 114 1.79 0.0649
2014-07-25 2014-06-30 13F/A-1 MERCK & CO INC COM 58933Y105 1,933 0 0.00 112 1.82 0.0628
2014-07-23 2014-06-30 13F MERCK & CO INC COM 58933Y105 1,933 0 1,118 62,693.5340
2014-04-09 2014-03-31 13F MERCK & CO INC COM 58933Y105 1,933 0 0.00 110 13.40 0.0647
2014-01-24 2013-12-31 13F MERCK & CO INC COM 58933Y105 1,933 1,933 97 0.0644
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.