Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionSunburst Financial Group, LLC
Latest Disclosed Ownership4,564 shares
Latest Disclosed Value $ 549,054
Sunburst Financial Group, LLC reports 0.28% decrease in ownership of MRK / Merck & Co., Inc.

On April 13, 2026 - Sunburst Financial Group, LLC filed a 13F-HR/A form disclosing ownership of 4,564 shares of Merck & Co., Inc. (MX:MRK) valued at $549,054 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 21, 2026 disclosing 4,577 shares of Merck & Co., Inc.. This represents a change in shares of -0.28% 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)
2026-04-13 2026-03-31 13F/A-1 MERCK COM 58933Y105 4,564 -13 -0.28 549 14.14 0.1011
2026-04-08 2026-03-31 13F MERCK COM 58933Y105 4,564 -13 549 0.1011
2026-01-21 2025-12-31 13F MERCK COM 58933Y105 4,577 105 2.35 482 28.27 0.0975
2025-10-17 2025-09-30 13F MERCK COM 58933Y105 4,472 -53 -1.17 375 4.75 0.0790
2025-08-05 2025-06-30 13F MERCK COM 58933Y105 4,525 -164 -3.50 358 -14.76 0.0802
2025-05-08 2025-03-31 13F MERCK COM 58933Y105 4,689 -225 -4.58 421 -13.93 0.1033
2025-01-30 2024-12-31 13F MERCK COM 58933Y105 4,914 -2,874 -36.90 489 -44.80 0.1209
2024-10-25 2024-09-30 13F MERCK COM 58933Y105 7,788 7 0.09 884 -8.20 0.2242
2024-07-12 2024-06-30 13F MERCK COM 58933Y105 7,781 -117 -1.48 963 -6.87 0.2613
2024-04-16 2024-03-31 13F MERCK COM 58933Y105 7,898 189 2.45 1,035 23.10 0.2926
2024-01-09 2023-12-31 13F MERCK COM 58933Y105 7,709 136 1.80 840 7.83 0.2602
2023-10-19 2023-09-30 13F MERCK COM 58933Y105 7,573 -18 -0.24 780 -10.97 0.2750
2023-07-12 2023-06-30 13F MERCK COM 58933Y105 7,591 12 0.16 876 8.56 0.3056
2023-05-08 2023-03-31 13F MERCK COM 58933Y105 7,579 -14 -0.18 806 -4.28 0.2973
2023-01-20 2022-12-31 13F MERCK COM 58933Y105 7,593 110 1.47 842 30.75 0.3354
2022-10-14 2022-09-30 13F MERCK COM 58933Y105 7,483 5 0.07 644 -5.57 0.3119
2022-07-29 2022-06-30 13F MERCK COM 58933Y105 7,478 1 0.01 682 11.07 0.3270
2022-05-06 2022-03-31 13F MERCK COM 58933Y105 7,477 8 0.11 614 7.34 0.3030
2022-02-02 2021-12-31 13F MERCK COM 58933Y105 7,469 30 0.40 572 2.33 0.2903
2021-11-09 2021-09-30 13F MERCK COM 58933Y105 7,439 18 0.24 559 -3.12 0.3464
2021-07-23 2021-06-30 13F MERCK COM 58933Y105 7,421 55 0.75 577 1.58 0.3674
2021-04-29 2021-03-31 13F MERCK & CO. COM 58933Y105 7,366 287 4.05 568 -1.90 0.3957
2021-01-20 2020-12-31 13F MERCK & CO. COM 58933Y105 7,079 13 0.18 579 -1.19 0.4362
2020-10-16 2020-09-30 13F MERCK & CO. COM 58933Y105 7,066 -5 -0.07 586 7.13 0.4959
2020-08-13 2020-06-30 13F MERCK & CO. COM 58933Y105 7,071 0 0.00 547 0.55 0.4955
2020-05-04 2020-03-31 13F MERCK & CO. COM 58933Y105 7,071 -102 -1.42 544 -16.56 0.5748
2020-01-30 2019-12-31 13F MERCK COM 58933Y105 7,173 7,173 652 0.5694
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.