Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionNavellier & Associates Inc
Latest Disclosed Ownership2,600 shares
Latest Disclosed Value $ 312,754
Navellier & Associates Inc reports 3.20% decrease in ownership of MRK / Merck & Co., Inc.

On May 7, 2026 - Navellier & Associates Inc filed a 13F-HR form disclosing ownership of 2,600 shares of Merck & Co., Inc. (MX:MRK) valued at $312,754 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 2,686 shares of Merck & Co., Inc.. This represents a change in shares of -3.20% 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)
2026-05-07 2026-03-31 13F Merck COM 58933Y105 2,600 -86 -3.20 313 10.64 0.0326
2026-02-03 2025-12-31 13F Merck com 58933Y105 2,686 -5,707 -68.00 283 -59.94 0.0317
2025-11-06 2025-09-30 13F Merck COM 58933Y105 8,393 244 2.99 704 9.15 0.0715
2025-08-07 2025-06-30 13F Merck COM 58933Y105 8,149 0 0.00 645 -4.44 0.0799
2025-05-06 2025-03-31 13F Merck COM 58933Y105 8,149 -6,604 -44.76 675 -53.99 0.0932
2025-02-03 2024-12-31 13F Merck COM 58933Y105 14,753 2,035 16.00 1,468 1.59 0.1760
2024-11-12 2024-09-30 13F Merck COM 58933Y105 12,718 -2,761 -17.84 1,444 -24.63 0.1958
2024-08-08 2024-06-30 13F Merck COM 58933Y105 15,479 -86 -0.55 1,916 -6.67 0.2250
2024-05-14 2024-03-31 13F Merck COM 58933Y105 15,565 -921 -5.59 2,054 14.25 0.2531
2024-02-08 2023-12-31 13F Merck COM 58933Y105 16,486 2,756 20.07 1,797 27.18 0.2693
2023-11-09 2023-09-30 13F Merck COM 58933Y105 13,730 3,994 41.02 1,414 25.82 0.2421
2023-08-07 2023-06-30 13F Merck COM 58933Y105 9,736 382 4.08 1,123 12.86 0.2188
2023-05-12 2023-03-31 13F Merck COM 58933Y105 9,354 -1,089 -10.43 995 -14.08 0.2094
2023-02-02 2022-12-31 13F Merck COM 58933Y105 10,443 516 5.20 1,159 35.44 0.2361
2022-11-09 2022-09-30 13F Merck COM 58933Y105 9,927 -470 -4.52 855 -9.81 0.1901
2022-08-12 2022-06-30 13F Merck COM 58933Y105 10,397 99 0.96 948 12.19 0.2035
2022-04-29 2022-03-31 13F Merck COM 58933Y105 10,298 -127 -1.22 845 5.76 0.1437
2022-02-14 2021-12-31 13F Merck COM 58933Y105 10,425 -562 -5.12 799 -3.15 0.1163
2021-10-28 2021-09-30 13F Merck COM 58933Y105 10,987 -536 -4.65 825 -7.92 0.1244
2021-08-09 2021-06-30 13F Merck COM 58933Y105 11,523 -173 -1.48 896 -0.67 0.1351
2021-05-12 2021-03-31 13F Merck COM 58933Y105 11,696 -744 -5.98 902 -11.39 0.1622
2021-02-05 2020-12-31 13F Merck COM 58933Y105 12,440 -427 -3.32 1,018 -4.59 0.1843
2020-11-09 2020-09-30 13F Merck COM 58933Y105 12,867 -1,270 -8.98 1,067 -2.38 0.2328
2020-08-12 2020-06-30 13F Merck COM 58933Y105 14,137 10,425 280.85 1,093 282.17 0.2597
2020-05-13 2020-03-31 13F Merck COM 58933Y105 3,712 -5,050 -57.64 286 -64.12 0.0672
2020-02-12 2019-12-31 13F Merck COM 58933Y105 8,762 250 2.94 797 11.16 0.1283
2019-10-16 2019-09-30 13F Merck COM 58933Y105 8,512 -93 -1.08 717 -0.69 0.1187
2019-07-17 2019-06-30 13F Merck COM 58933Y105 8,605 -403 -4.47 722 -3.60 0.1116
2019-05-15 2019-03-31 13F Merck COM 58933Y105 9,008 -294 -3.16 749 5.34 0.1162
2019-01-15 2018-12-31 13F Merck COM 58933Y105 9,302 4,700 102.13 711 118.10 0.1209
2018-11-14 2018-09-30 13F Merck COM 58933Y105 4,602 -7,499 -61.97 326 -55.65 0.0422
2018-08-06 2018-06-30 13F Merck COM 58933Y105 12,101 -1,099 -8.33 735 2.23 0.1023
2018-05-21 2018-03-31 13F Merck COM 58933Y105 13,200 -2,175 -14.15 719 -16.88 0.1090
2018-02-12 2017-12-31 13F Merck COM 58933Y105 15,375 -31,600 -67.27 865 -71.24 0.1617
2017-11-14 2017-09-30 13F Merck COM 58933Y105 46,975 -10,316 -18.01 3,008 -18.08 0.5842
2017-08-24 2017-06-30 13F Merck COM 58933Y105 57,291 -3,309 -5.46 3,672 -4.65 0.5486
2017-04-21 2017-03-31 13F Merck COM 58933Y105 60,600 -1,700 -2.73 3,851 4.99 0.5611
2017-02-13 2016-12-31 13F Merck COM 58933Y105 62,300 -5,404 -7.98 3,668 -13.18 0.6064
2016-10-24 2016-09-30 13F Merck COM 58933Y105 67,704 -2,298 -3.28 4,225 4.76 0.6041
2016-08-03 2016-06-30 13F Merck COM 58933Y105 70,002 2,645 3.93 4,033 13.16 0.6020
2016-05-13 2016-03-31 13F Merck COM 58933Y105 67,357 2,894 4.49 3,564 4.67 0.4627
2016-02-10 2015-12-31 13F Merck COM 58933Y105 64,463 245 0.38 3,405 7.35 0.3745
2015-10-20 2015-09-30 13F Merck COM 58933Y105 64,218 1,407 2.24 3,172 -11.30 0.3194
2015-07-08 2015-06-30 13F Merck COM 58933Y105 62,811 8,700 16.08 3,576 14.98 0.3137
2015-05-18 2015-03-31 13F Merck COM 58933Y105 54,111 54,111 0.00 3,110 0.2820
2015-02-02 2014-12-31 13F Merck COM 58933Y105 0 -46,371 -100.00 0 -100.00
2014-10-07 2014-09-30 13F Merck COM 58933Y105 46,371 3,100 7.16 2,749 9.83 0.1381
2014-07-09 2014-06-30 13F Merck COM 58933Y105 43,271 18,483 74.56 2,503 77.90 0.1133
2014-05-08 2014-03-31 13F Merck COM 58933Y105 24,788 6,769 37.57 1,407 55.99 0.0656
2014-02-03 2013-12-31 13F Merck COM 58933Y105 18,019 2,756 18.06 902 24.07 0.0407
2013-11-05 2013-09-30 13F Merck COM 58933Y105 15,263 10,049 192.73 727 200.41 0.0215
2013-11-05 2013-06-30 13F/A-1 Merck COM 58933Y105 5,214 -805,297 -99.36 242 -99.32 0.0115
2013-07-03 2013-06-30 13F Merck COM 58933Y105 5,077 236
2013-11-05 2013-03-31 13F/A-1 Merck COM 58933Y105 810,511 -12,720 -1.55 35,825 6.30 1.6604
2013-11-05 2012-12-31 13F/A-1 Merck COM 58933Y105 823,231 -4,395 -0.53 33,703 -9.70 1.6901
2013-11-05 2012-09-30 13F/A-1 Merck COM 58933Y105 827,626 827,626 37,322 1.8006
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.