Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionCito Capital Group, LLC
Latest Disclosed Ownership29,864 shares
Latest Disclosed Value $ 3,614
Cito Capital Group, LLC ownership in MRK / Merck & Co., Inc.

On May 14, 2026 - Cito Capital Group, LLC filed a 13F-HR form disclosing ownership of 29,864 shares of Merck & Co., Inc. (MX:MRK) valued at $3,614 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 29,864 shares of Merck & Co., Inc.. This represents a change in shares of 0.00% 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)
2026-05-14 2026-03-31 13F MERCK COM 58933Y105 29,864 0 0.00 4 0.00 1.1090
2026-02-13 2025-12-31 13F MERCK COM 58933Y105 29,864 0 0.00 3 50.00 0.9237
2025-11-14 2025-09-30 13F MERCK COM 58933Y105 29,864 3,514 13.34 3 0.00 0.7326
2025-08-14 2025-06-30 13F MERCK COM 58933Y105 26,350 694 2.71 2 0.00 0.7321
2025-05-15 2025-03-31 13F MERCK COM 58933Y105 25,656 1,000 4.06 2 0.00 0.8816
2025-02-13 2024-12-31 13F MERCK COM 58933Y105 24,656 1,200 5.12 2 0.00 0.9087
2024-11-13 2024-09-30 13F MERCK COM 58933Y105 23,456 200 0.86 3 0.00 0.9995
2024-08-14 2024-06-30 13F MERCK COM 58933Y105 23,256 0 0.00 3 -33.33 1.1221
2024-05-15 2024-03-31 13F MERCK COM 58933Y105 23,256 3,000 14.81 3 50.00 1.2633
2024-02-14 2023-12-31 13F MERCK COM 58933Y105 20,256 0 0.00 2 0.00 0.9516
2023-11-15 2023-09-30 13F MERCK COM 58933Y105 20,256 400 2.01 2 0.00 1.0148
2023-08-14 2023-06-30 13F MERCK COM 58933Y105 19,856 0 0.00 2 0.00 1.0548
2023-05-15 2023-03-31 13F MERCK COM 58933Y105 19,856 0 0.00 2 0.00 1.0588
2023-02-10 2022-12-31 13F MERCK COM 58933Y105 19,856 86 0.44 2 100.00 1.2173
2022-11-14 2022-09-30 13F MERCK COM 58933Y105 19,770 0 0.00 2 0.00 0.9824
2022-08-15 2022-06-30 13F MERCK COM 58933Y105 19,770 -2,000 -9.19 2 0.00 0.9926
2022-05-16 2022-03-31 13F MERCK COM 58933Y105 21,770 0 0.00 2 0.00 0.8214
2022-02-14 2021-12-31 13F MERCK COM 58933Y105 21,770 200 0.93 2 0.00 0.7016
2021-11-10 2021-09-30 13F MERCK COM 58933Y105 21,570 7,000 48.04 2 0.00 0.7603
2021-08-16 2021-06-30 13F MERCK COM 58933Y105 14,570 -378 -2.53 1 0.00 0.5134
2021-05-17 2021-03-31 13F MERCK COM 58933Y105 14,948 -100 -0.66 1 0.00 0.5650
2021-02-16 2020-12-31 13F MERCK COM 58933Y105 15,048 -76 -0.50 1 -99.92 0.6235
2020-11-16 2020-09-30 13F MERCK COM 58933Y105 15,124 0 0.00 1,258 7.25 0.7025
2020-08-11 2020-06-30 13F MERCK COM 58933Y105 15,124 0 0.00 1,173 0.26 0.7600
2020-05-15 2020-03-31 13F MERCK COM 58933Y105 15,124 -4,622 -23.41 1,170 -35.11 0.9389
2020-02-13 2019-12-31 13F MERCK COM 58933Y105 19,746 -500 -2.47 1,803 5.44 1.1798
2019-11-14 2019-09-30 13F MERCK COM 58933Y105 20,246 -883 -4.18 1,710 -3.82 1.2355
2019-08-14 2019-06-30 13F MERCK COM 58933Y105 21,129 0 0.00 1,778 0.85 1.3082
2019-05-13 2019-03-31 13F MERCK COM 58933Y105 21,129 0 0.00 1,763 8.76 1.2939
2019-02-11 2018-12-31 13F MERCK COM 58933Y105 21,129 0 0.00 1,621 7.42 1.3384
2018-11-13 2018-09-30 13F MERCK COM 58933Y105 21,129 0 0.00 1,509 16.71 1.0358
2018-07-02 2018-06-30 13F MERCK & CO INC COM 58933Y105 21,129 -10,000 -32.12 1,293 -24.39 0.9685
2018-05-14 2018-03-31 13F MERCK & CO INC COM 58933Y105 31,129 0 0.00 1,711 -3.17 1.2968
2018-02-12 2017-12-31 13F MERCK & CO INC COM 58933Y105 31,129 0 0.00 1,767 -11.39 1.3105
2017-11-13 2017-09-30 13F MERCK & CO INC COM 58933Y105 31,129 31,129 1,993 1.5672
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.