머크 앤 컴퍼니(Merck & Co., Inc.)
CH ˙ SWX ˙ US58933Y1055
SecurityCH:MRK / Merck & Co., Inc.
InstitutionXML Financial, LLC
Latest Disclosed Ownership61,160 shares
Latest Disclosed Value $ 7,356,972
XML Financial, LLC reports 2.89% decrease in ownership of MRK / Merck & Co., Inc.

On April 16, 2026 - XML Financial, LLC filed a 13F-HR form disclosing ownership of 61,160 shares of Merck & Co., Inc. (CH:MRK) valued at $7,356,972 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 62,981 shares of Merck & Co., Inc.. This represents a change in shares of -2.89% 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)
2026-04-16 2026-03-31 13F MERCK COM 58933Y105 61,160 -1,821 -2.89 7,357 10.97 0.5935
2026-02-11 2025-12-31 13F MERCK COM 58933Y105 62,981 -7,034 -10.05 6,629 12.81 0.5408
2025-10-20 2025-09-30 13F MERCK COM 58933Y105 70,015 -2,291 -3.17 5,876 2.67 0.4784
2025-07-17 2025-06-30 13F MERCK COM 58933Y105 72,306 4,216 6.19 5,724 -6.35 0.4952
2025-04-22 2025-03-31 13F MERCK COM 58933Y105 68,090 10 0.01 6,112 -9.76 0.5700
2025-01-17 2024-12-31 13F MERCK COM 58933Y105 68,080 5,506 8.80 6,773 -4.69 0.6200
2024-11-01 2024-09-30 13F MERCK COM 58933Y105 62,574 -1,290 -2.02 7,106 -10.13 0.6595
2024-07-22 2024-06-30 13F MERCK COM 58933Y105 63,864 -2,561 -3.86 7,906 -9.79 0.7956
2024-05-15 2024-03-31 13F MERCK COM 58933Y105 66,425 -8,102 -10.87 8,765 7.88 0.8975
2024-02-14 2023-12-31 13F MERCK COM 58933Y105 74,527 2,002 2.76 8,125 8.81 0.8568
2023-11-06 2023-09-30 13F MERCK COM 58933Y105 72,525 591 0.82 7,466 -10.05 0.8948
2023-08-07 2023-06-30 13F MERCK COM 58933Y105 71,934 -757 -1.04 8,300 7.40 0.9602
2023-05-15 2023-03-31 13F MERCK COM 58933Y105 72,691 -694 -0.95 7,728 -5.08 0.9411
2023-02-10 2022-12-31 13F MERCK COM 58933Y105 73,385 -363 -0.49 8,142 28.20 1.0228
2022-11-04 2022-09-30 13F MERCK COM 58933Y105 73,748 58,695 389.92 6,351 362.90 0.8815
2022-08-01 2022-06-30 13F MERCK COM 58933Y105 15,053 -56,769 -79.04 1,372 -76.72 0.3102
2022-05-02 2022-03-31 13F MERCK COM 58933Y105 71,822 -393 -0.54 5,893 6.47 0.7010
2022-02-01 2021-12-31 13F MERCK COM 58933Y105 72,215 275 0.38 5,535 2.44 0.6667
2021-11-01 2021-09-30 13F MERCK COM 58933Y105 71,940 57,907 412.65 5,403 395.23 0.7212
2021-08-10 2021-06-30 13F MERCK COM 58933Y105 14,033 154 1.11 1,091 1.96 0.2400
2021-05-14 2021-03-31 13F MERCK & CO. COM 58933Y105 13,879 -124 -0.89 1,070 -6.55 0.2609
2021-02-08 2020-12-31 13F MERCK & CO. COM 58933Y105 14,003 1,421 11.29 1,145 9.67 0.2968
2020-11-13 2020-09-30 13F MERCK & CO. COM 58933Y105 12,582 -179 -1.40 1,044 5.78 0.3259
2020-07-31 2020-06-30 13F MERCK & CO. COM 58933Y105 12,761 832 6.97 987 7.52 0.3425
2020-05-08 2020-03-31 13F MERCK & CO. COM 58933Y105 11,929 433 3.77 918 -12.24 0.3965
2020-02-04 2019-12-31 13F MERCK COM 58933Y105 11,496 11,496 1,046 0.3801
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.