Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionSara-Bay Financial
Latest Disclosed Ownership8,632 shares
Latest Disclosed Value $ 1,038,343
Sara-Bay Financial reports 3.51% decrease in ownership of MRK / Merck & Co., Inc.

On April 17, 2026 - Sara-Bay Financial filed a 13F-HR form disclosing ownership of 8,632 shares of Merck & Co., Inc. (MX:MRK) valued at $1,038,343 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 20, 2026 disclosing 8,946 shares of Merck & Co., Inc.. This represents a change in shares of -3.51% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-04-17 2026-03-31 13F MERCK CL A 58933Y105 8,632 -314 -3.51 1,038 9.49 0.3123
2026-01-20 2025-12-31 13F MERCK Com 58933Y105 8,946 -338 -3.64 949 21.69 0.2837
2025-10-10 2025-09-30 13F MERCK COM 58933Y105 9,284 -103 -1.10 779 4.85 0.2178
2025-07-15 2025-06-30 13F MERCK CO. 58933Y105 9,387 0 0.00 743 -11.23 0.2659
2025-04-11 2025-03-31 13F MERCK CO. 58933Y105 9,387 -558 -5.61 838 -14.42 0.3694
2025-01-15 2024-12-31 13F MERCK Com 58933Y105 9,945 61 0.62 978 -12.83 0.3626
2024-10-07 2024-09-30 13F MERCK Com 58933Y105 9,884 376 3.95 1,122 -4.67 0.4064
2024-07-19 2024-06-30 13F Merck Com 58933Y105 9,508 1,208 14.55 1,177 8.28 0.4775
2024-04-16 2024-03-31 13F MERCK Com 58933Y105 8,300 2,385 40.32 1,087 68.79 0.4877
2024-01-12 2023-12-31 13F MERCK Com 58933Y105 5,915 0 0.00 645 5.92 0.3145
2023-10-13 2023-09-30 13F MERCK Com 58933Y105 5,915 1,013 20.67 609 7.61 0.3088
2023-07-14 2023-06-30 13F MERCK Com 58933Y105 4,902 126 2.64 566 11.22 0.2751
2023-04-14 2023-03-31 13F MERCK Com 58933Y105 4,776 0 0.00 508 -4.15 0.2587
2023-01-11 2022-12-31 13F MERCK Com 58933Y105 4,776 343 7.74 530 38.74 0.2982
2022-10-18 2022-09-30 13F MERCK Com 58933Y105 4,433 480 12.14 382 4.95 0.2126
2022-08-26 2022-06-30 13F/A-1 MERCK Com 58933Y105 3,953 606 18.11 364 32.36 0.1767
2022-07-12 2022-06-30 13F MERCK Com 58933Y105 3,953 606 364 0.1767
2022-04-12 2022-03-31 13F MERCK Com 58933Y105 3,347 0 0.00 275 7.00 0.1090
2022-01-14 2021-12-31 13F MERCK Com 58933Y105 3,347 0 0.00 257 2.39 0.0772
2021-10-08 2021-09-30 13F MERCK Com 58933Y105 3,347 0 0.00 251 -3.83 0.0982
2021-07-16 2021-06-30 13F MERCK Com 58933Y105 3,347 0 0.00 261 1.16 0.0984
2021-04-14 2021-03-31 13F MERCK COM 58933Y105 3,347 -88 -2.56 258 -8.19 0.1052
2021-01-15 2020-12-31 13F MERCK Com 58933Y105 3,435 -100 -2.83 281 -4.10 0.1268
2020-10-07 2020-09-30 13F MERCK Common 58933Y105 3,535 502 16.55 293 23.11 0.1592
2020-07-21 2020-06-30 13F MERCK COMMON 58933Y105 3,033 3,033 238 0.1367
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.