Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionJohnson Financial Group, LLC
Latest Disclosed Ownership7,731 shares
Latest Disclosed Value $ 929,978
Johnson Financial Group, LLC reports 116.80% increase in ownership of MRK / Merck & Co., Inc.

On May 14, 2026 - Johnson Financial Group, LLC filed a 13F-HR form disclosing ownership of 7,731 shares of Merck & Co., Inc. (MX:MRK) valued at $929,978 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 3,566 shares of Merck & Co., Inc.. This represents a change in shares of 116.80% 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)
2026-05-14 2026-03-31 13F MERCK COM 58933Y105 7,731 4,165 116.80 930 147.73 0.0619
2026-02-10 2025-12-31 13F MERCK COM 58933Y105 3,566 -300 -7.76 375 15.74 0.0232
2025-10-30 2025-09-30 13F MERCK COM 58933Y105 3,866 419 12.16 324 19.12 0.0297
2025-08-11 2025-06-30 13F MERCK COM 58933Y105 3,447 -412 -10.68 273 -21.39 0.0259
2025-05-12 2025-03-31 13F MERCK COM 58933Y105 3,859 3,859 346 0.0366
2022-11-10 2022-09-30 13F Merck & Co Inc COM 58933Y105 0 -2,429 -100.00 0 -100.00
2022-08-11 2022-06-30 13F Merck & Co Inc COM 58933Y105 2,429 2,429 221 0.0449
2022-05-06 2022-03-31 13F Merck & Co Inc COM 58933Y105 0 -5,319 -100.00 0 -100.00
2022-02-11 2021-12-31 13F Merck & Co Inc COM 58933Y105 5,319 -30 -0.56 408 1.75 0.0661
2021-11-15 2021-09-30 13F Merck & Co Inc COM 58933Y105 5,349 -1,580 -22.80 401 -25.60 0.0780
2021-08-12 2021-06-30 13F Merck & Co Inc COM 58933Y105 6,929 2,449 54.67 539 56.23 0.1046
2021-05-12 2021-03-31 13F Merck & Co Inc COM 58933Y105 4,480 4,480 345 0.0803
2019-02-14 2018-12-31 13F Merck & Co Inc COM 58933Y105 0 -5,433 -100.00 0 -100.00
2018-05-15 2018-03-31 13F Merck & Co Inc COM 58933Y105 5,433 1,005 22.70 295 18.47 0.2424
2018-02-14 2017-12-31 13F Merck & Co Inc COM 58933Y105 4,428 -980 -18.12 249 -28.03 0.1873
2017-11-09 2017-09-30 13F Merck & Co Inc COM 58933Y105 5,408 406 8.12 346 8.13 0.2880
2017-11-03 2017-06-30 13F/A-1 Merck & Co Inc COM 58933Y105 5,002 7 0.14 320 0.95 0.2694
2017-07-19 2017-06-30 13F Merck & Co Inc COM 58933Y105 5,002 7 320
2017-05-11 2017-03-31 13F Merck & Co Inc COM 58933Y105 4,995 -1,121 -18.33 317 -11.94 0.3610
2017-05-11 2016-12-31 13F Merck & Co Inc COM 58933Y105 6,116 6,116 360 0.2884
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.