Arista Networks, Inc.
MX ˙ BMV ˙ US0404132054
SecurityMX:ANET / Arista Networks, Inc.
InstitutionCommerce Bank
Latest Disclosed Ownership156,534 shares
Latest Disclosed Value $ 19,219,243
Commerce Bank reports 13.56% increase in ownership of ANET / Arista Networks, Inc.

On May 11, 2026 - Commerce Bank filed a 13F-HR form disclosing ownership of 156,534 shares of Arista Networks, Inc. (MX:ANET) valued at $19,219,243 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 137,846 shares of Arista Networks, Inc.. This represents a change in shares of 13.56% 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 ARISTA NETWORKS COM SHS 040413205 156,534 18,688 13.56 19,219 6.41 0.0396
2026-02-13 2025-12-31 13F ARISTA NETWORKS COM SHS 040413205 137,846 -775 -0.56 18,062 -10.58 0.0997
2025-11-12 2025-09-30 13F ARISTA NETWORKS COM SHS 040413205 138,621 -16,250 -10.49 20,198 27.48 0.1124
2025-08-07 2025-06-30 13F ARISTA NETWORKS COM SHS 040413205 154,871 1,206 0.78 15,845 33.09 0.0935
2025-05-08 2025-03-31 13F ARISTA NETWORKS COM SHS 040413205 153,665 -27,489 -15.17 11,906 -40.54 0.0760
2025-02-13 2024-12-31 13F ARISTA NETWORKS COM SHS 040413205 181,154 133,889 283.27 20,023 10.37 0.1234
2024-11-08 2024-09-30 13F ARISTA NETWORKS COM 040413106 47,265 -1,512 -3.10 18,141 6.12 0.1112
2024-08-12 2024-06-30 13F ARISTA NETWORKS COM 040413106 48,777 -2,002 -3.94 17,095 16.10 0.1107
2024-05-03 2024-03-31 13F ARISTA NETWORKS COM 040413106 50,779 -2,255 -4.25 14,725 17.89 0.0974
2024-02-09 2023-12-31 13F ARISTA NETWORKS COM 040413106 53,034 -5,501 -9.40 12,490 16.01 0.0889
2023-11-14 2023-09-30 13F ARISTA NETWORKS COM 040413106 58,535 -2,648 -4.33 10,766 8.58 0.0848
2023-08-08 2023-06-30 13F ARISTA NETWORKS COM 040413106 61,183 -52,890 -46.37 9,915 -48.22 0.0742
2023-05-04 2023-03-31 13F ARISTA NETWORKS COM 040413106 114,073 -4,595 -3.87 19,148 32.97 0.1500
2023-02-10 2022-12-31 13F ARISTA NETWORKS COM 040413106 118,668 -806 -0.67 14,400 6.77 0.1170
2022-11-04 2022-09-30 13F ARISTA NETWORKS COM 040413106 119,474 -13,414 -10.09 13,487 8.27 0.1172
2022-08-12 2022-06-30 13F ARISTA NETWORKS COM 040413106 132,888 64,265 93.65 12,457 30.62 0.1015
2022-05-09 2022-03-31 13F ARISTA NETWORKS COM 040413106 68,623 84 0.12 9,537 -3.21 0.0653
2022-02-14 2021-12-31 13F ARISTA NETWORKS COM 040413106 68,539 50,684 283.86 9,853 60.58 0.0644
2021-11-09 2021-09-30 13F ARISTA NETWORKS COM 040413106 17,855 356 2.03 6,136 -3.22 0.0434
2021-08-09 2021-06-30 13F ARISTA NETWORKS COM 040413106 17,499 -116 -0.66 6,340 19.22 0.0450
2021-05-05 2021-03-31 13F ARISTA NETWORKS COM 040413106 17,615 -66 -0.37 5,318 3.50 0.0404
2021-02-09 2020-12-31 13F ARISTA NETWORKS COM 040413106 17,681 -1,584 -8.22 5,138 28.90 0.0415
2020-11-06 2020-09-30 13F ARISTA NETWORKS COM 040413106 19,265 -2,446 -11.27 3,986 -12.59 0.0360
2020-08-07 2020-06-30 13F ARISTA NETWORKS COM 040413106 21,711 -1,940 -8.20 4,560 -4.82 0.0444
2020-05-08 2020-03-31 13F ARISTA NETWORKS COM 040413106 23,651 -7,784 -24.76 4,791 -25.07 0.0580
2020-02-14 2019-12-31 13F ARISTA NETWORKS COM 040413106 31,435 -122,293 -79.55 6,394 -82.59 0.0609
2019-11-12 2019-09-30 13F ARISTA NETWORKS COM 040413106 153,728 17,475 12.83 36,729 3.83 0.3768
2019-08-07 2019-06-30 13F ARISTA NETWORKS COM 040413106 136,253 4,538 3.45 35,374 -14.59 0.3968
2019-05-08 2019-03-31 13F ARISTA NETWORKS COM 040413106 131,715 124,500 1,725.57 41,419 2,623.14 0.4906
2019-02-11 2018-12-31 13F ARISTA NETWORKS COM 040413106 7,215 363 5.30 1,521 -16.52 0.0194
2018-11-02 2018-09-30 13F ARISTA NETWORKS COM 040413106 6,852 97 1.44 1,822 4.77 0.0217
2018-08-08 2018-06-30 13F ARISTA NETWORKS COM 040413106 6,755 -194 -2.79 1,739 -1.97 0.0221
2018-05-03 2018-03-31 13F ARISTA NETWORKS COM 040413106 6,949 -317 -4.36 1,774 3.62 0.0234
2018-02-12 2017-12-31 13F ARISTA NETWORKS COM 040413106 7,266 -191 -2.56 1,712 21.07 0.0223
2017-11-07 2017-09-30 13F/A-1 ARISTA NETWORKS COM 040413106 7,457 -1,115 -13.01 1,414 10.12 0.0192
2017-11-07 2017-09-30 13F ARISTA NETWORKS COM 040413106 8,572 1,284
2017-08-08 2017-06-30 13F ARISTA NETWORKS COM 040413106 8,572 -1,561 -15.41 1,284 -4.18 0.0180
2017-05-05 2017-03-31 13F ARISTA NETWORKS COM 040413106 10,133 852 9.18 1,340 49.22 0.0191
2017-02-08 2016-12-31 13F ARISTA NETWORKS COM 040413106 9,281 -15,950 -63.22 898 -58.15 0.0134
2016-11-03 2016-09-30 13F ARISTA NETWORKS COM 040413106 25,231 -375 -1.46 2,146 30.22 0.0334
2016-08-09 2016-06-30 13F ARISTA NETWORKS COM 040413106 25,606 -995 -3.74 1,648 -1.79 0.0261
2016-04-27 2016-03-31 13F ARISTA NETWORKS COM 040413106 26,601 -10,069 -27.46 1,678 -41.23 0.0279
2016-02-12 2015-12-31 13F ARISTA NETWORKS COM 040413106 36,670 -10,800 -22.75 2,855 -1.69 0.0478
2015-11-10 2015-09-30 13F ARISTA NETWORKS COM 040413106 47,470 1,040 2.24 2,904 -23.48 0.0499
2015-08-03 2015-06-30 13F ARISTA NETWORKS COM 040413106 46,430 -2,626 -5.35 3,795 9.71 0.0594
2015-05-06 2015-03-31 13F ARISTA NETWORKS COM 040413106 49,056 -85,894 -63.65 3,459 -57.82 0.0537
2015-02-11 2014-12-31 13F ARISTA NETWORKS COM 040413106 134,950 134,950 8,200 0.1296
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.