Arista Networks, Inc.
MX ˙ BMV ˙ US0404132054
SecurityMX:ANET / Arista Networks, Inc.
InstitutionComerica Bank
Latest Disclosed Ownership223,419 shares
Latest Disclosed Value $ 29,274,641
Comerica Bank reports 6.54% decrease in ownership of ANET / Arista Networks, Inc.

On January 29, 2026 - Comerica Bank filed a 13F-HR form disclosing ownership of 223,419 shares of Arista Networks, Inc. (MX:ANET) valued at $29,274,641 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 14, 2025 disclosing 239,042 shares of Arista Networks, Inc.. This represents a change in shares of -6.54% 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)
2026-01-29 2025-12-31 13F ARISTA NETWORKS COM SHS 040413205 223,419 -15,623 -6.54 29,275 -15.95 0.1168
2025-11-14 2025-09-30 13F ARISTA NETWORKS COM SHS 040413205 239,042 16,118 7.23 34,831 52.72 0.1310
2025-08-14 2025-06-30 13F ARISTA NETWORKS COM SHS 040413205 222,924 -16,856 -7.03 22,807 22.76 0.0885
2025-05-14 2025-03-31 13F ARISTA NETWORKS COM SHS 040413205 239,780 19,425 8.82 18,578 -23.72 0.0780
2025-02-14 2024-12-31 13F/A-1 ARISTA NETWORKS COM SHS 040413205 220,355 156,355 244.30 24,356 -0.85 0.0982
2025-02-14 2024-12-31 13F ARISTA NETWORKS COM SHS 040413205 220,355 220,355 24,356 0.0816
2024-11-14 2024-09-30 13F ARISTA NETWORKS COM 040413106 64,000 546 0.86 24,564 10.45 0.0972
2024-08-15 2024-06-30 13F ARISTA NETWORKS COMMON 040413106 63,454 -5,851 -8.44 22,239 10.66 0.0926
2024-05-16 2024-03-31 13F ARISTA NETWORKS COMMON 040413106 69,305 -5,305 -7.11 20,097 14.37 0.0866
2024-02-14 2023-12-31 13F ARISTA NETWORKS COMMON 040413106 74,610 -4,096 -5.20 17,572 21.38 0.0809
2023-11-21 2023-09-30 13F ARISTA NETWORKS COMMON 040413106 78,706 78,595 70,806.31 14,476 0.0754
2023-08-22 2023-06-30 13F ARISTA NETWORKS EQU 040413106 111 -64,719 -99.83 0 -100.00 0.0008
2023-01-26 2022-12-31 13F ARISTA NETWORKS COM 040413106 64,830 -3,100 -4.56 8 -99.91 0.0586
2022-10-28 2022-09-30 13F ARISTA NETWORKS COM 040413106 67,930 2,708 4.15 7,522 10.10 0.0634
2022-08-02 2022-06-30 13F ARISTA NETWORKS COM 040413106 65,222 3,140 5.06 6,832 -13.45 0.0561
2022-04-27 2022-03-31 13F ARISTA NETWORKS COM 040413106 62,082 -3,884 -5.89 7,894 2.32 0.0573
2022-02-18 2021-12-31 13F ARISTA NETWORKS COM 040413106 65,966 55,472 528.61 7,715 88.26 0.0568
2021-11-22 2021-09-30 13F ARISTA NETWORKS COM 040413106 10,494 -2,505 -19.27 4,098 -14.05 0.0247
2021-08-26 2021-06-30 13F ARISTA NETWORKS COM 040413106 12,999 -627 -4.60 4,768 9.79 0.0285
2021-04-28 2021-03-31 13F ARISTA NETWORKS COM 040413106 13,626 -614 -4.31 4,343 -1.99 0.0259
2021-01-28 2020-12-31 13F ARISTA NETWORKS COM 040413106 14,240 1,413 11.02 4,431 61.36 0.0281
2020-10-30 2020-09-30 13F ARISTA NETWORKS COM 040413106 12,827 398 3.20 2,746 -5.54 0.0199
2020-07-31 2020-06-30 13F ARISTA NETWORKS COM 040413106 12,429 85 0.69 2,907 8.63 0.0224
2020-05-01 2020-03-31 13F ARISTA NETWORKS COM 040413106 12,344 -67 -0.54 2,676 -6.95 0.0245
2020-02-07 2019-12-31 13F ARISTA NETWORKS COM 040413106 12,411 1,918 18.28 2,876 14.54 0.0218
2019-10-31 2019-09-30 13F ARISTA NETWORKS COM 040413106 10,493 123 1.19 2,511 -12.72 0.0198
2019-08-02 2019-06-30 13F ARISTA NETWORKS COM 040413106 10,370 418 4.20 2,877 -10.29 0.0230
2019-05-02 2019-03-31 13F ARISTA NETWORKS COM 040413106 9,952 -173 -1.71 3,207 53.44 0.0260
2019-02-06 2018-12-31 13F ARISTA NETWORKS COM 040413106 10,125 -3,610 -26.28 2,090 -34.65 0.0178
2018-11-01 2018-09-30 13F ARISTA NETWORKS COM 040413106 13,735 10,899 384.31 3,198 311.58 0.0258
2018-08-01 2018-06-30 13F ARISTA NETWORKS COM 040413106 2,836 38 1.36 777 8.37 0.0054
2018-05-01 2018-03-31 13F ARISTA NETWORKS COM 040413106 2,798 66 2.42 717 -3.89 0.0051
2018-02-02 2017-12-31 13F ARISTA NETWORKS COM 040413106 2,732 1 0.04 746 39.18 0.0050
2017-11-06 2017-09-30 13F ARISTA NETWORKS COM 040413106 2,731 449 19.68 536 51.41 0.0039
2017-08-03 2017-06-30 13F ARISTA NETWORKS COM 040413106 2,282 411 21.97 354 35.63 0.0026
2017-05-03 2017-03-31 13F ARISTA NETWORKS COM 040413106 1,871 -175 -8.55 261 27.32 0.0020
2017-02-08 2016-12-31 13F ARISTA NETWORKS COM 040413106 2,046 2,046 205 0.0016
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.