Merck & Co., Inc.
DE ˙ XTRA ˙ US58933Y1055
102,78 € ↑2,84 (2,84%)
2026-06-04
AKTIENPREIS
SecurityDE:6MK / Merck & Co., Inc.
InstitutionAbacus Planning Group, Inc.
Latest Disclosed Ownership13,266 shares
Latest Disclosed Value $ 1,595,732
Abacus Planning Group, Inc. reports 6.03% decrease in ownership of 6MK / Merck & Co., Inc.

On April 7, 2026 - Abacus Planning Group, Inc. filed a 13F-HR form disclosing ownership of 13,266 shares of Merck & Co., Inc. (DE:6MK) valued at $1,382,317 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 16, 2026 disclosing 14,117 shares of Merck & Co., Inc.. This represents a change in shares of -6.03% during the quarter. The current value of the position is $1,363,479 USD.

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)
2026-04-07 2026-03-31 13F MERCK COM 58933Y105 13,266 -851 -6.03 1,596 7.41 0.2148
2026-01-16 2025-12-31 13F MERCK COM 58933Y105 14,117 862 6.50 1,486 33.54 0.1978
2025-10-22 2025-09-30 13F MERCK COM 58933Y105 13,255 -582 -4.21 1,112 1.55 0.1535
2025-07-21 2025-06-30 13F/A-1 MERCK COM 58933Y105 13,837 -498 -3.47 1,095 -14.85 0.1629
2025-04-14 2025-03-31 13F MERCK COM 58933Y105 14,335 2,310 19.21 1,287 7.53 0.2254
2025-02-03 2024-12-31 13F MERCK COM 58933Y105 12,025 47 0.39 1,196 -12.06 0.2104
2024-10-02 2024-09-30 13F MERCK COM 58933Y105 11,978 -196 -1.61 1,360 -9.75 0.2431
2024-07-31 2024-06-30 13F MERCK COM 58933Y105 12,174 1,116 10.09 1,507 3.29 0.2923
2024-04-12 2024-03-31 13F MERCK COM 58933Y105 11,058 -489 -4.23 1,459 15.98 0.2852
2024-01-19 2023-12-31 13F MERCK COM 58933Y105 11,547 -544 -4.50 1,259 1.13 0.2654
2023-10-11 2023-09-30 13F MERCK COM 58933Y105 12,091 -937 -7.19 1,245 -17.23 0.3029
2023-07-07 2023-06-30 13F MERCK COM 58933Y105 13,028 1,004 8.35 1,503 17.51 0.3637
2023-04-18 2023-03-31 13F MERCK COM 58933Y105 12,024 -232 -1.89 1,279 -5.89 0.3296
2023-01-19 2022-12-31 13F MERCK COM 58933Y105 12,256 1,019 9.07 1,360 40.39 0.3719
2022-10-19 2022-09-30 13F MERCK COM 58933Y105 11,237 -1,930 -14.66 968 -19.33 0.2922
2022-07-18 2022-06-30 13F MERCK COM 58933Y105 13,167 -872 -6.21 1,200 4.17 0.3536
2022-04-13 2022-03-31 13F MERCK COM 58933Y105 14,039 -136 -0.96 1,152 6.08 0.3101
2022-01-18 2021-12-31 13F MERCK COM 58933Y105 14,175 2,053 16.94 1,086 19.34 0.2900
2021-10-19 2021-09-30 13F MERCK COM 58933Y105 12,122 180 1.51 910 -2.05 0.2897
2021-07-20 2021-06-30 13F MERCK COM 58933Y105 11,942 -157 -1.30 929 -0.43 0.2837
2021-04-27 2021-03-31 13F MERCK & CO. COM 58933Y105 12,099 190 1.60 933 -4.21 0.2985
2021-02-01 2020-12-31 13F MERCK & CO. COM 58933Y105 11,909 -160 -1.33 974 -2.70 0.3007
2020-11-03 2020-09-30 13F MERCK & CO. COM 58933Y105 12,069 -494 -3.93 1,001 3.09 0.3651
2020-08-11 2020-06-30 13F MERCK & CO. COM 58933Y105 12,563 256 2.08 971 2.53 0.3953
2020-04-30 2020-03-31 13F MERCK & CO. COM 58933Y105 12,307 156 1.28 947 -14.30 0.4654
2020-01-30 2019-12-31 13F MERCK COM 58933Y105 12,151 -404 -3.22 1,105 4.54 0.5075
2019-11-01 2019-09-30 13F MERCK COM 58933Y105 12,555 2,575 25.80 1,057 26.28 0.5237
2019-08-12 2019-06-30 13F MERCK COM 58933Y105 9,980 0 0.00 837 0.84 0.5028
2019-04-25 2019-03-31 13F MERCK COM 58933Y105 9,980 -135 -1.33 830 7.37 0.5188
2019-02-15 2018-12-31 13F/A-2 MERCK COM 58933Y105 10,115 963 10.52 773 19.11 0.5861
2019-02-13 2018-12-31 13F/A-1 MERCK COM 58933Y105 21,884 11,769 3,132 2.3747
2019-01-25 2018-12-31 13F MARATHON PETROLEUM COM 058933105 10,115 6,882 773
2018-10-31 2018-09-30 13F MERCK COM 058933105 9,152 -1,340 -12.77 649 2.04 0.4354
2018-07-26 2018-06-30 13F MERCK COM 058933105 10,492 -72 -0.68 636 10.61 0.4778
2018-05-04 2018-03-31 13F MERCK COM 058933105 10,564 376 3.69 575 0.35 0.4687
2018-03-06 2017-12-31 13F MERCK COM 058933105 10,188 10,188 573 0.5809
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.