Merck & Co., Inc.
DE ˙ XTRA ˙ US58933Y1055
102,78 € ↑2,84 (2,84%)
2026-06-04
DEL PRIS
SecurityDE:6MK / Merck & Co., Inc.
InstitutionCanton Hathaway, LLC
Latest Disclosed Ownership5,898 shares
Latest Disclosed Value $ 709,470
Canton Hathaway, LLC ownership in 6MK / Merck & Co., Inc.

On April 24, 2026 - Canton Hathaway, LLC filed a 13F-HR form disclosing ownership of 5,898 shares of Merck & Co., Inc. (DE:6MK) valued at $614,572 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 21, 2026 disclosing 5,898 shares of Merck & Co., Inc.. This represents a change in shares of 0.00% during the quarter. The current value of the position is $606,196 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)
2026-04-24 2026-03-31 13F Merck COM 58933Y105 5,898 0 0.00 709 14.35 0.1431
2026-01-21 2025-12-31 13F Merck COM 58933Y105 5,898 0 0.00 621 25.25 0.1197
2025-10-23 2025-09-30 13F Merck COM 58933Y105 5,898 0 0.00 495 0.0949
2025-08-04 2025-06-30 13F Merck COM 58933Y105 5,898 -6,450 -52.24 0 -100.00 0.0952
2025-04-22 2025-03-31 13F Merck COM 58933Y105 12,348 6,450 109.36 1 0.2239
2025-02-04 2024-12-31 13F Merck COM 58933Y105 5,898 -500 -7.81 1 0.1467
2024-11-13 2024-09-30 13F Merck COM 58933Y105 6,398 0 0.00 1 0.1815
2024-07-22 2024-06-30 13F Merck COM 58933Y105 6,398 0 0.00 1 0.2166
2024-05-13 2024-03-31 13F Merck COM 58933Y105 6,398 0 0.00 1 0.2266
2024-01-30 2023-12-31 13F Merck COM 58933Y105 6,398 0 0.00 1 0.2102
2023-10-11 2023-09-30 13F Merck COM 58933Y105 6,398 78 1.23 1 0.2088
2023-07-11 2023-06-30 13F Merck COM 58933Y105 6,320 0 0.00 1 0.2282
2023-04-11 2023-03-31 13F Merck COM 58933Y105 6,320 0 0.00 1 0.2290
2023-01-19 2022-12-31 13F Merck COM 58933Y105 6,320 0 0.00 1 -100.00 0.2437
2022-10-17 2022-09-30 13F Merck COM 58933Y105 6,320 0 0.00 544 -5.56 0.1985
2022-07-20 2022-06-30 13F Merck COM 58933Y105 6,320 0 0.00 576 10.98 0.2008
2022-04-12 2022-03-31 13F Merck COM 58933Y105 6,320 0 0.00 519 7.23 0.1452
2022-01-06 2021-12-31 13F Merck COM 58933Y105 6,320 500 8.59 484 10.76 0.1310
2021-10-14 2021-09-30 13F Merck COM 58933Y105 5,820 520 9.81 437 6.07 0.1256
2021-07-08 2021-06-30 13F Merck COM 58933Y105 5,300 0 0.00 412 0.73 0.1205
2021-04-14 2021-03-31 13F Merck COM 58933Y105 5,300 300 6.00 409 0.00 0.1305
2021-02-03 2020-12-31 13F Merck COM 58933Y105 5,000 0 0.00 409 -1.45 0.1379
2020-11-09 2020-09-30 13F Merck COM 58933Y105 5,000 0 0.00 415 7.24 0.1700
2020-07-27 2020-06-30 13F Merck COM 58933Y105 5,000 -1,058 -17.46 387 -16.95 0.2525
2020-05-06 2020-03-31 13F Merck COM 58933Y105 6,058 188 3.20 466 -12.73 0.3318
2020-01-10 2019-12-31 13F Merck COM 58933Y105 5,870 0 0.00 534 8.10 0.2744
2019-10-11 2019-09-30 13F Merck COM 58933Y105 5,870 870 17.40 494 17.90 0.2739
2019-07-15 2019-06-30 13F Merck COM 58933Y105 5,000 0 0.00 419 0.96 0.2346
2019-04-10 2019-03-31 13F Merck COM 58933Y105 5,000 0 0.00 415 8.64 0.2415
2019-02-07 2018-12-31 13F Merck COM 58933Y105 5,000 5,000 382 0.2469
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.