Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionAdell Harriman & Carpenter Inc
Latest Disclosed Ownership12,302 shares
Latest Disclosed Value $ 1,479,807
Adell Harriman & Carpenter Inc reports 2.46% decrease in ownership of MRK / Merck & Co., Inc.

On May 4, 2026 - Adell Harriman & Carpenter Inc filed a 13F-HR form disclosing ownership of 12,302 shares of Merck & Co., Inc. (MX:MRK) valued at $1,479,807 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 12,612 shares of Merck & Co., Inc.. This represents a change in shares of -2.46% 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)
2026-05-04 2026-03-31 13F Merck Com 58933Y105 12,302 -310 -2.46 1,480 11.45 0.0903
2026-02-06 2025-12-31 13F Merck Com 58933Y105 12,612 -1,665 -11.66 1,328 10.77 0.0793
2025-11-04 2025-09-30 13F Merck Com 58933Y105 14,277 -3,923 -21.55 1,198 -16.81 0.0728
2025-08-04 2025-06-30 13F Merck Com 58933Y105 18,200 -4,775 -20.78 1,441 -30.16 0.0955
2025-04-29 2025-03-31 13F Merck Com 58933Y105 22,975 -15,764 -40.69 2,062 -46.48 0.1553
2025-01-30 2024-12-31 13F Merck Com 58933Y105 38,739 -24,908 -39.13 3,854 -46.69 0.2681
2024-10-25 2024-09-30 13F Merck Com 58933Y105 63,647 10,210 19.11 7,228 9.25 0.5256
2024-08-01 2024-06-30 13F Merck Com 58933Y105 53,437 13,670 34.38 6,616 26.07 0.5109
2024-04-25 2024-03-31 13F Merck Com 58933Y105 39,767 8,156 25.80 5,247 52.26 0.4321
2024-02-05 2023-12-31 13F Merck Com 58933Y105 31,611 5,352 20.38 3,446 27.49 0.3190
2023-11-07 2023-09-30 13F Merck Com 58933Y105 26,259 6,835 35.19 2,703 21.76 0.2805
2023-08-04 2023-06-30 13F Merck Com 58933Y105 19,424 3,350 20.84 2,221 29.82 0.2257
2023-05-03 2023-03-31 13F Merck Com 58933Y105 16,074 2,770 20.82 1,710 15.85 0.1837
2023-02-03 2022-12-31 13F Merck Com 58933Y105 13,304 711 5.65 1,476 36.16 0.1697
2022-11-03 2022-09-30 13F Merck Com 58933Y105 12,593 5,150 69.19 1,085 59.88 0.1320
2022-08-03 2022-06-30 13F Merck Com 58933Y105 7,443 3,794 103.97 679 126.76 0.0832
2022-04-29 2022-03-31 13F Merck Com 58933Y105 3,649 768 26.66 299 35.91 0.0291
2022-02-16 2021-12-31 13F Merck Com 58933Y105 2,881 -288 -9.09 221 -7.56 0.0205
2021-11-05 2021-09-30 13F Merck Com 58933Y105 3,169 3,169 238 0.0248
2016-02-12 2015-12-31 13F MERCK & CO INC Com 58933Y105 0 0 0 0.0000
2015-11-12 2015-09-30 13F MERCK & CO INC Com 58933Y105 0 -5,249 -100.00 0 -100.00
2015-08-14 2015-06-30 13F MERCK & CO INC Com 58933Y105 5,249 -1,800 -25.54 299 -26.42 0.0771
2015-05-11 2015-03-31 13F MERCK & CO INC Com 58933Y105 7,049 603 9.35 405 10.66 0.1067
2015-02-09 2014-12-31 13F MERCK & CO INC COM 58933Y105 6,446 300 4.88 366 3.10 0.0997
2014-11-13 2014-09-30 13F MERCK & CO INC Com 58933Y105 6,146 0 0.00 356 0.00 0.0978
2014-08-11 2014-06-30 13F MERCK & CO INC Com 58933Y105 6,146 546 9.75 356 11.99 0.0978
2014-05-06 2014-03-31 13F MERCK & CO INC Com 58933Y105 5,600 756 15.61 318 30.99 0.0939
2014-02-07 2013-12-31 13F MERCK & CO INC Com 58933Y105 4,844 -456 -8.60 242 -3.97 0.0753
2013-11-05 2013-09-30 13F MERCK & CO INC Com 58933Y105 5,300 450 9.28 252 12.00 0.0710
2013-08-07 2013-06-30 13F MERCK & CO INC Com 58933Y105 4,850 4,850 225 0.0807
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.