Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionMontis Financial, LLC
Latest Disclosed Ownership2,603 shares
Latest Disclosed Value $ 313,111
Montis Financial, LLC reports 16.88% increase in ownership of MRK / Merck & Co., Inc.

On May 11, 2026 - Montis Financial, LLC filed a 13F-HR form disclosing ownership of 2,603 shares of Merck & Co., Inc. (MX:MRK) valued at $313,111 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 2,227 shares of Merck & Co., Inc.. This represents a change in shares of 16.88% 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)
2026-05-11 2026-03-31 13F MERCK COM 58933Y105 2,603 376 16.88 313 33.76 0.0648
2026-02-11 2025-12-31 13F MERCK COM 58933Y105 2,227 2,227 234 0.0463
2025-05-02 2025-03-31 13F MERCK COM 58933Y105 0 -2,078 -100.00 0 -100.00
2025-02-10 2024-12-31 13F MERCK COM 58933Y105 2,078 2,078 207 0.0638
2023-10-31 2023-09-30 13F MERCK COM 58933Y105 0 -2,726 -100.00 0 -100.00
2023-07-31 2023-06-30 13F MERCK COM 58933Y105 2,726 141 5.45 314 14.18 0.2074
2023-05-11 2023-03-31 13F MERCK COM 58933Y105 2,585 0 0.00 275 -3.85 0.2127
2023-02-02 2022-12-31 13F MERCK COM 58933Y105 2,585 -27 -1.03 287 27.11 0.2428
2022-10-25 2022-09-30 13F MERCK COM 58933Y105 2,612 -326 -11.10 225 -16.04 0.2168
2022-07-27 2022-06-30 13F MERCK COM 58933Y105 2,938 0 0.00 268 11.20 0.2509
2022-05-02 2022-03-31 13F MERCK COM 58933Y105 2,938 -11 -0.37 241 6.64 0.1882
2022-01-24 2021-12-31 13F MERCK COM 58933Y105 2,949 0 0.00 226 -7.76 0.1640
2021-10-26 2021-09-30 13F MERCK COM 58933Y105 2,949 -1,973 -40.09 245 -36.03 0.2082
2021-07-26 2021-06-30 13F MERCK COM 58933Y105 4,922 -167 -3.28 383 -2.30 0.3174
2021-05-04 2021-03-31 13F MERCK & CO. COM 58933Y105 5,089 11 0.22 392 0.26 0.3652
2021-02-10 2020-12-31 13F MERCK & CO. COM 58933Y105 5,078 5,078 391 0.3905
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.