Arista Networks, Inc.
US ˙ NYSE ˙ US0404132054

SecurityANET / Arista Networks, Inc.
InstitutionWetherby Asset Management Inc
Latest Disclosed Ownership57,171 shares
Latest Disclosed Value $ 8,330,387
Wetherby Asset Management Inc reports 2.43% decrease in ownership of ANET / Arista Networks, Inc.

On November 14, 2025 - Wetherby Asset Management Inc filed a 13F-HR form disclosing ownership of 57,171 shares of Arista Networks, Inc. (US:ANET) valued at $8,330,386 USD as of September 30, 2025. The entity filed a previous 13F-HR on August 14, 2025 disclosing 58,597 shares of Arista Networks, Inc.. This represents a change in shares of -2.43% during the quarter. The current value of the position is $8,819,770 USD.

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)
2025-11-14 2025-09-30 13F ARISTA NETWORKS COM SHS 040413205 57,171 -1,426 -2.43 8,330 38.95 0.3401
2025-08-14 2025-06-30 13F ARISTA NETWORKS COM SHS 040413205 58,597 -10,125 -14.73 5,995 -21.07 0.2669
2025-02-14 2024-12-31 13F ARISTA NETWORKS COM SHS 040413205 68,722 48,068 232.73 7,596 -4.19 0.3642
2024-11-14 2024-09-30 13F ARISTA NETWORKS COM 040413106 20,654 -44 -0.21 7,928 9.28 0.3625
2024-08-14 2024-06-30 13F ARISTA NETWORKS COM 040413106 20,698 -6,291 -23.31 7,254 -7.31 0.3420
2024-05-15 2024-03-31 13F ARISTA NETWORKS COM 040413106 26,989 -5,606 -17.20 7,826 1.95 0.3729
2024-02-14 2023-12-31 13F ARISTA NETWORKS COM 040413106 32,595 -14 -0.04 7,676 28.00 0.3999
2023-11-14 2023-09-30 13F ARISTA NETWORKS COM 040413106 32,609 709 2.22 5,998 16.02 0.3401
2023-08-14 2023-06-30 13F ARISTA NETWORKS COM 040413106 31,900 -7,700 -19.44 5,170 -22.24 0.2784
2023-05-12 2023-03-31 13F ARISTA NETWORKS COM 040413106 39,600 -1,924 -4.63 6,647 31.94 0.3890
2023-02-14 2022-12-31 13F ARISTA NETWORKS COM 040413106 41,524 -1,456 -3.39 5,039 3.83 0.3236
2022-11-14 2022-09-30 13F ARISTA NETWORKS COM 040413106 42,980 450 1.06 4,852 21.70 0.3421
2022-08-15 2022-06-30 13F ARISTA NETWORKS COM 040413106 42,530 -754 -1.74 3,987 -33.73 0.2721
2022-05-16 2022-03-31 13F ARISTA NETWORKS COM 040413106 43,284 636 1.49 6,016 -1.88 0.3447
2022-02-14 2021-12-31 13F ARISTA NETWORKS COM 040413106 42,648 30,926 263.83 6,131 52.21 0.3442
2021-11-15 2021-09-30 13F ARISTA NETWORKS COM 040413106 11,722 8 0.07 4,028 -5.09 0.2485
2021-08-16 2021-06-30 13F ARISTA NETWORKS COM 040413106 11,714 -5 -0.04 4,244 19.95 0.2589
2021-05-14 2021-03-31 13F ARISTA NETWORKS COM 040413106 11,719 -5,208 -30.77 3,538 -28.06 0.2696
2021-02-11 2020-12-31 13F ARISTA NETWORKS COM 040413106 16,927 16,888 43,302.56 4,918 61,375.00 0.3335
2020-12-16 2020-09-30 13F/A-01 ARISTA NETWORKS COM 040413106 16,814 -13 3,479 0.3189
2020-12-16 2020-09-30 13F/A-02 ARISTA NETWORKS COM 040413106 39 -16,788 -99.77 8 -99.77 0.0240
2020-11-13 2020-09-30 13F ARISTA NETWORKS COM 040413106 16,864 37 3,490 221,994.6441
2020-08-14 2020-06-30 13F ARISTA NETWORKS COM 040413106 16,827 151 0.91 3,534 4.62 0.3350
2020-05-06 2020-03-31 13F ARISTA NETWORKS COM 040413106 16,676 368 2.26 3,378 1.84 0.3792
2020-01-28 2019-12-31 13F ARISTA NETWORKS COM 040413106 16,308 1 0.01 3,317 -14.86 0.3267
2019-10-31 2019-09-30 13F ARISTA NETWORKS COM 040413106 16,307 -24 -0.15 3,896 -8.11 0.4068
2019-07-25 2019-06-30 13F ARISTA NETWORKS COM 040413106 16,331 77 0.47 4,240 -17.04 0.4641
2019-07-25 2019-03-31 13F/A-1 ARISTA NETWORKS COM 040413106 16,254 -7,889 -32.68 5,111 0.47 0.6365
2019-05-09 2019-03-31 13F ARISTA NETWORKS COM 040413106 16,254 -7,889 5,111
2019-01-30 2018-12-31 13F ARISTA NETWORKS COM 040413106 24,143 -3 -0.01 5,087 -20.75 0.7195
2018-11-07 2018-09-30 13F ARISTA NETWORKS COM 040413106 24,146 35 0.15 6,419 3.40 0.7929
2018-07-24 2018-06-30 13F ARISTA NETWORKS COM 040413106 24,111 137 0.57 6,208 1.42 0.8404
2018-05-04 2018-03-31 13F ARISTA NETWORKS COM 040413106 23,974 -1,232 -4.89 6,121 3.08 0.8449
2018-02-09 2017-12-31 13F ARISTA NETWORKS COM 040413106 25,206 -20,929 -45.36 5,938 -32.12 0.8239
2017-11-13 2017-09-30 13F ARISTA NETWORKS COM 040413106 46,135 30 0.07 8,748 26.67 1.3012
2017-08-01 2017-06-30 13F ARISTA NETWORKS COM 040413106 46,105 29 0.06 6,906 13.32 1.1749
2017-04-27 2017-03-31 13F ARISTA NETWORKS COM 040413106 46,076 -12,263 -21.02 6,094 7.95 1.0959
2017-02-08 2016-12-31 13F ARISTA NETWORKS COM 040413106 58,339 -34,200 -36.96 5,645 -28.30 1.1056
2016-11-14 2016-09-30 13F ARISTA NETWORKS COM 040413106 92,539 -250 -0.27 7,873 31.79 1.5927
2016-08-10 2016-06-30 13F ARISTA NETWORKS COM 040413106 92,789 0 0.00 5,974 2.03 1.3244
2016-05-10 2016-03-31 13F ARISTA NETWORKS COM 040413106 92,789 0 0.00 5,855 -18.94 1.3799
2016-02-08 2015-12-31 13F ARISTA NETWORKS COM 040413106 92,789 -32,560 -25.98 7,223 -5.83 1.7317
2015-11-12 2015-09-30 13F ARISTA NETWORKS COM 040413106 125,349 -36,720 -22.66 7,670 -42.10 1.9651
2015-08-12 2015-06-30 13F ARISTA NETWORKS COM 040413106 162,069 -79,146 -32.81 13,248 -22.13 3.1848
2015-05-08 2015-03-31 13F ARISTA NETWORKS COM 040413106 241,215 -83,220 -25.65 17,013 -13.70 4.1418
2015-02-12 2014-12-31 13F ARISTA NETWORKS COM 040413106 324,435 324,435 19,713 4.9577
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.