Merck & Co., Inc.
BG ˙ BUL ˙ US58933Y1055
SecurityBG:6MK / Merck & Co., Inc.
InstitutionAbbot Financial Management, Inc.
Latest Disclosed Ownership37,071 shares
Latest Disclosed Value $ 4,459,295
Abbot Financial Management, Inc. reports 1.84% decrease in ownership of 6MK / Merck & Co., Inc.

On May 13, 2026 - Abbot Financial Management, Inc. filed a 13F-HR form disclosing ownership of 37,071 shares of Merck & Co., Inc. (BG:6MK) valued at $4,459,295 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 37,767 shares of Merck & Co., Inc.. This represents a change in shares of -1.84% 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)
2026-05-13 2026-03-31 13F MERCK COM 58933Y105 37,071 -696 -1.84 4,459 12.18 1.8625
2026-02-13 2025-12-31 13F MERCK COM 58933Y105 37,767 779 2.11 3,975 28.06 1.6485
2025-11-10 2025-09-30 13F MERCK COM 58933Y105 36,988 2,811 8.22 3,104 14.75 1.3263
2025-08-14 2025-06-30 13F MERCK COM 58933Y105 34,177 2,187 6.84 2,705 -5.78 1.2479
2025-05-07 2025-03-31 13F MERCK COM 58933Y105 31,990 -18 -0.06 2,871 -9.83 1.4897
2025-02-06 2024-12-31 13F MERCK COM 58933Y105 32,008 506 1.61 3,184 -10.99 1.5853
2024-11-08 2024-09-30 13F MERCK COM 58933Y105 31,502 490 1.58 3,577 -6.82 1.8003
2024-08-09 2024-06-30 13F MERCK COM 58933Y105 31,012 -146 -0.47 3,839 -6.62 2.0568
2024-05-13 2024-03-31 13F MERCK COM 58933Y105 31,158 -218 -0.69 4,111 20.20 2.2683
2024-02-09 2023-12-31 13F MERCK COM 58933Y105 31,376 1,077 3.55 3,421 9.65 2.0579
2023-11-13 2023-09-30 13F MERCK COM 58933Y105 30,299 -972 -3.11 3,119 -13.55 2.0976
2023-08-14 2023-06-30 13F MERCK COM 58933Y105 31,271 -959 -2.98 3,608 5.25 2.3154
2023-05-15 2023-03-31 13F MERCK COM 58933Y105 32,230 -674 -2.05 3,429 -6.08 2.3015
2023-02-09 2022-12-31 13F MERCK COM 58933Y105 32,904 -2,298 -6.53 3,651 20.38 2.4970
2022-11-14 2022-09-30 13F MERCK COM 58933Y105 35,202 76 0.22 3,032 -5.31 2.1593
2022-08-09 2022-06-30 13F MERCK COM 58933Y105 35,126 202 0.58 3,202 11.72 1.9354
2022-05-12 2022-03-31 13F MERCK COM 58933Y105 34,924 -49 -0.14 2,866 6.94 1.3992
2022-02-15 2021-12-31 13F MERCK COM 58933Y105 34,973 -1,376 -3.79 2,680 -1.83 1.1969
2021-11-04 2021-09-30 13F MERCK COM 58933Y105 36,349 -374 -1.02 2,730 -4.41 1.2416
2021-08-05 2021-06-30 13F MERCK COM 58933Y105 36,723 254 0.70 2,856 1.60 1.2484
2021-05-13 2021-03-31 13F MERCK & CO. COM 58933Y105 36,469 1,181 3.35 2,811 -2.63 1.2754
2021-02-11 2020-12-31 13F MERCK Stock 58933Y105 35,288 501 1.44 2,887 0.03 1.6631
2020-10-26 2020-09-30 13F MERCK Stock 58933Y105 34,787 33 0.09 2,886 7.37 1.8730
2020-07-22 2020-06-30 13F MERCK Stock 58933Y105 34,754 -397 -1.13 2,688 -0.63 1.8496
2020-05-12 2020-03-31 13F MERCK Stock 58933Y105 35,151 311 0.89 2,705 -14.64 2.2014
2020-02-12 2019-12-31 13F MERCK Stock 58933Y105 34,840 1 0.00 3,169 8.05 2.0071
2019-11-13 2019-09-30 13F MERCK Stock 58933Y105 34,839 -98 -0.28 2,933 0.14 2.0932
2019-08-08 2019-06-30 13F MERCK Stock 58933Y105 34,937 -1,294 -3.57 2,929 -2.79 2.1232
2019-05-15 2019-03-31 13F MERCK Stock 58933Y105 36,231 -198 -0.54 3,013 8.23 2.3387
2019-02-07 2018-12-31 13F MERCK Stock 58933Y105 36,429 -999 -2.67 2,784 4.86 2.4519
2018-11-09 2018-09-30 13F MERCK Stock 58933Y105 37,428 2 0.01 2,655 16.86 1.9757
2018-08-09 2018-06-30 13F MERCK Stock 58933Y105 37,426 -698 -1.83 2,272 9.39 1.8077
2018-05-02 2018-03-31 13F MERCK Stock 58933Y105 38,124 2,027 5.62 2,077 2.26 1.6676
2018-02-12 2017-12-31 13F MERCK Stock 58933Y105 36,097 1,925 5.63 2,031 -5.84 1.6189
2017-10-25 2017-09-30 13F MERCK & CO INC COM Stock 58933Y105 34,172 103 0.30 2,157 -1.19 1.7970
2017-08-11 2017-06-30 13F MERCK & CO INC COM Stock 58933Y105 34,069 34,069 2,183 1.9572
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.