Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionMontag A & Associates Inc
Latest Disclosed Ownership137,790 shares
Latest Disclosed Value $ 16,686,940
Montag A & Associates Inc reports 2.76% decrease in ownership of MRK / Merck & Co., Inc.

On April 29, 2026 - Montag A & Associates Inc filed a 13F-HR form disclosing ownership of 137,790 shares of Merck & Co., Inc. (MX:MRK) valued at $16,686,940 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 141,706 shares of Merck & Co., Inc.. This represents a change in shares of -2.76% 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)
2026-04-29 2026-03-31 13F MERCK COM 58933Y105 137,790 -3,916 -2.76 16,687 11.01 0.7749
2026-02-02 2025-12-31 13F MERCK COM 58933Y105 141,706 -1,974 -1.37 15,031 23.50 0.6859
2025-11-12 2025-09-30 13F MERCK COM 58933Y105 143,680 -6,323 -4.22 12,171 1.50 0.5598
2025-08-07 2025-06-30 13F MERCK COM 58933Y105 150,003 -10,310 -6.43 11,991 -17.39 0.5841
2025-05-05 2025-03-31 13F MERCK COM 58933Y105 160,313 -4,387 -2.66 14,515 -12.10 0.7260
2025-01-30 2024-12-31 13F MERCK COM 58933Y105 164,700 -13,914 -7.79 16,514 -19.12 0.7838
2024-11-05 2024-09-30 13F MERCK COM 58933Y105 178,614 -1,081 -0.60 20,417 -8.77 0.9643
2024-07-31 2024-06-30 13F MERCK COM 58933Y105 179,695 7,736 4.50 22,380 -1.92 1.1293
2024-05-07 2024-03-31 13F MERCK COM 58933Y105 171,959 2,521 1.49 22,817 22.67 1.1405
2024-02-07 2023-12-31 13F MERCK COM 58933Y105 169,438 653 0.39 18,599 6.31 1.0372
2023-11-09 2023-09-30 13F MERCK COM 58933Y105 168,785 -14,268 -7.79 17,496 -17.68 1.1045
2023-08-09 2023-06-30 13F MERCK COM 58933Y105 183,053 102 0.06 21,252 8.47 1.3087
2023-05-11 2023-03-31 13F MERCK COM 58933Y105 182,951 -2,829 -1.52 19,593 -5.53 1.2810
2023-02-02 2022-12-31 13F MERCK COM 58933Y105 185,780 -931 -0.50 20,742 28.00 1.3889
2022-11-09 2022-09-30 13F MERCK COM 58933Y105 186,711 -9,089 -4.64 16,204 -9.88 1.1221
2022-08-10 2022-06-30 13F MERCK COM 58933Y105 195,800 2,927 1.52 17,980 13.62 1.1631
2022-05-02 2022-03-31 13F MERCK COM 58933Y105 192,873 2,098 1.10 15,825 8.23 0.8401
2022-02-09 2021-12-31 13F MERCK COM 58933Y105 190,775 380 0.20 14,621 2.24 0.7210
2021-11-08 2021-09-30 13F MERCK COM 58933Y105 190,395 16,858 9.71 14,301 5.96 0.7680
2021-08-03 2021-06-30 13F MERCK COM 58933Y105 173,537 -2,550 -1.45 13,496 -0.58 0.7167
2021-05-14 2021-03-31 13F MERCK & CO. COM 58933Y105 176,087 -10,819 -5.79 13,575 -11.21 0.7644
2021-02-12 2020-12-31 13F MERCK & CO. COM 58933Y105 186,906 2,915 1.58 15,289 0.18 0.9391
2020-11-12 2020-09-30 13F MERCK & CO INC COM COM 58933Y105 183,991 1,778 0.98 15,262 8.31 1.2310
2020-08-04 2020-06-30 13F MERCK & CO INC COM COM 58933Y105 182,213 -2,387 -1.29 14,091 -0.79 1.2329
2020-05-06 2020-03-31 13F MERCK & CO INC COM COM 58933Y105 184,600 -35,188 -16.01 14,203 -28.95 1.4169
2020-02-05 2019-12-31 13F MERCK & CO INC COM COM 58933Y105 219,788 1,902 0.87 19,990 8.98 1.5979
2019-11-04 2019-09-30 13F MERCK & CO INC COM COM 58933Y105 217,886 11,800 5.73 18,342 6.15 1.5959
2019-08-06 2019-06-30 13F MERCK & CO INC COM COM 58933Y105 206,086 12,195 6.29 17,280 7.16 1.5405
2019-05-01 2019-03-31 13F MERCK & CO INC COM COM 58933Y105 193,891 -13,912 -6.69 16,126 1.56 1.4952
2019-02-06 2018-12-31 13F MERCK & CO INC COM COM 58933Y105 207,803 -1,140 -0.55 15,878 7.12 1.7080
2018-11-07 2018-09-30 13F MERCK & CO INC COM COM 58933Y105 208,943 28,473 15.78 14,822 35.30 1.2985
2018-08-08 2018-06-30 13F/A-1 MERCK & CO INC COM COM 58933Y105 180,470 -924 -0.51 10,955 10.87 1.1247
2018-08-01 2018-06-30 13F MERCK & CO INC COM COM 58933Y105 180,470 -924 10,955
2018-05-07 2018-03-31 13F MERCK & CO INC COM COM 58933Y105 181,394 -2,454 -1.33 9,881 -4.49 1.0172
2018-02-09 2017-12-31 13F MERCK & CO INC COM COM 58933Y105 183,848 -2,950 -1.58 10,345 -13.51 1.0004
2017-11-06 2017-09-30 13F MERCK & CO INC COM COM 58933Y105 186,798 -10,271 -5.21 11,961 -5.30 1.2839
2017-08-04 2017-06-30 13F MERCK & CO INC COM COM 58933Y105 197,069 -5,065 -2.51 12,630 -1.67 1.4154
2017-05-02 2017-03-31 13F MERCK & CO INC COM COM 58933Y105 202,134 -5,698 -2.74 12,844 4.98 1.4360
2017-02-03 2016-12-31 13F MERCK COM 58933Y105 207,832 38,733 22.91 12,235 15.94 1.4473
2016-11-07 2016-09-30 13F MERCK COM 58933Y105 169,099 -43,675 -20.53 10,553 -13.91 1.3420
2016-08-02 2016-06-30 13F MERCK COM 58933Y105 212,774 -6,650 -3.03 12,258 5.58 1.6185
2016-05-05 2016-03-31 13F MERCK COM 58933Y105 219,424 15,125 7.40 11,610 7.59 1.6325
2016-02-11 2015-12-31 13F MERCK COM 58933Y105 204,299 -3,341 -1.61 10,791 5.23 1.5820
2015-11-06 2015-09-30 13F MERCK COM 58933Y105 207,640 -22,899 -9.93 10,255 -21.87 1.6032
2015-08-17 2015-06-30 13F MERCK COM 58933Y105 230,539 138,625 150.82 13,125 148.44 1.9111
2015-05-12 2015-03-31 13F MERCK COM 58933Y105 91,914 91,914 0.00 5,283 0.7643
2015-02-04 2014-12-31 13F MERCK COM 58933Y105 0 -71,695 -100.00 0 -100.00
2014-11-04 2014-09-30 13F MERCK COM 58933Y105 71,695 182 0.25 4,250 2.73 0.7010
2014-08-06 2014-06-30 13F MERCK COM 58933Y105 71,513 -80 -0.11 4,137 1.80 0.6745
2014-05-06 2014-03-31 13F MERCK COM 58933Y105 71,593 6,000 9.15 4,064 23.79 0.6869
2014-03-05 2013-12-31 13F MERCK COM 58933Y105 65,593 -35 -0.05 3,283 5.09 0.5639
2013-11-07 2013-09-30 13F MERCK COM 58933Y105 65,628 338 0.52 3,124 3.00 0.5830
2013-07-24 2013-06-30 13F MERCK COM 58933Y105 65,290 65,290 3,033 0.6194
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.