Arista Networks, Inc.
MX ˙ BMV ˙ US0404132054
SecurityMX:ANET / Arista Networks, Inc.
InstitutionAmalgamated Bank
Latest Disclosed Ownership217,213 shares
Latest Disclosed Value $ 26,669
Amalgamated Bank reports 4.89% decrease in ownership of ANET / Arista Networks, Inc.

On May 8, 2026 - Amalgamated Bank filed a 13F-HR form disclosing ownership of 217,213 shares of Arista Networks, Inc. (MX:ANET) valued at $26,669 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 228,391 shares of Arista Networks, Inc.. This represents a change in shares of -4.89% 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)
2026-05-08 2026-03-31 13F ARISTA NETWORKS INC COM SHS COM 040413205 217,213 -11,178 -4.89 27 -10.34 0.2041
2026-02-05 2025-12-31 13F ARISTA NETWORKS INC COM SHS COM 040413205 228,391 -4,333 -1.86 30 -12.12 0.2160
2025-10-29 2025-09-30 13F ARISTA NETWORKS INC COM SHS COM 040413205 232,724 3,426 1.49 34 43.48 0.2423
2025-08-04 2025-06-30 13F ARISTA NETWORKS INC COM SHS COM 040413205 229,298 -341 -0.15 23 35.29 0.1811
2025-04-25 2025-03-31 13F ARISTA NETWORKS INC COM SHS COM 040413205 229,639 3,175 1.40 18 -32.00 0.1522
2025-02-04 2024-12-31 13F ARISTA NETWORKS INC COM SHS COM 040413205 226,464 167,575 284.56 25 13.64 0.2055
2024-10-30 2024-09-30 13F ARISTA NETWORKS COM 040413106 58,889 4,202 7.68 23 15.79 0.1862
2024-08-12 2024-06-30 13F ARISTA NETWORKS COM 040413106 54,687 371 0.68 19 26.67 0.1632
2024-04-23 2024-03-31 13F ARISTA NETWORKS COM 040413106 54,316 -9,421 -14.78 16 0.00 0.1347
2024-02-06 2023-12-31 13F ARISTA NETWORKS COM 040413106 63,737 -4,025 -5.94 15 25.00 0.1198
2023-11-08 2023-09-30 13F ARISTA NETWORKS COM 040413106 67,762 -3,011 -4.25 12 9.09 0.1061
2023-08-11 2023-06-30 13F ARISTA NETWORKS COM 040413106 70,773 2,437 3.57 11 0.00 0.0928
2023-05-02 2023-03-31 13F ARISTA NETWORKS COM 040413106 68,336 1,409 2.11 11 37.50 0.0978
2023-02-10 2022-12-31 13F ARISTA NETWORKS COM 040413106 66,927 -819 -1.21 8 -99.90 0.0724
2022-11-09 2022-09-30 13F ARISTA NETWORKS COM 040413106 67,746 3,606 5.62 7,648 27.21 0.0738
2022-08-15 2022-06-30 13F ARISTA NETWORKS COM 040413106 64,140 3,288 5.40 6,012 -28.91 0.0560
2022-08-25 2022-03-31 13F/A-1 ARISTA NETWORKS COM 040413106 60,852 2,296 3.92 8,457 0.48 0.0657
2022-06-30 2022-03-31 13F ARISTA NETWORKS COM 040413106 60,852 2,296 8,457 0.0672
2022-02-15 2021-12-31 13F/A-1 ARISTA NETWORKS COM 040413106 58,556 45,008 332.21 8,417 80.78 0.0621
2022-02-15 2021-12-31 13F ARISTA NETWORKS COM 040413106 58,556 45,008 8,417 0.0621
2021-10-29 2021-09-30 13F ARISTA NETWORKS COM 040413106 13,548 -433 -3.10 4,656 -8.08 0.0393
2021-08-16 2021-06-30 13F ARISTA NETWORKS COM 040413106 13,981 10,498 301.41 5,065 381.92 0.0406
2021-05-13 2021-03-31 13F ARISTA NETWORKS COM 040413106 3,483 -166 -4.55 1,051 -0.85 0.0394
2021-02-12 2020-12-31 13F ARISTA NETWORKS COM 040413106 3,649 -17 -0.46 1,060 39.66 0.0402
2020-10-30 2020-09-30 13F ARISTA NETWORKS COM 040413106 3,666 -89 -2.37 759 -3.80 0.0330
2020-08-10 2020-06-30 13F ARISTA NETWORKS COM 040413106 3,755 -6,027 -61.61 789 -60.17 0.0365
2020-05-13 2020-03-31 13F ARISTA NETWORKS COM 040413106 9,782 -337 -3.33 1,981 -3.74 0.0484
2020-02-13 2019-12-31 13F ARISTA NETWORKS COM 040413106 10,119 433 4.47 2,058 -11.06 0.0379
2019-11-13 2019-09-30 13F ARISTA NETWORKS COM 040413106 9,686 1,924 24.79 2,314 14.84 0.0487
2019-08-14 2019-06-30 13F ARISTA NETWORKS COM 040413106 7,762 -795 -9.29 2,015 -25.12 0.0470
2019-05-15 2019-03-31 13F ARISTA NETWORKS COM 040413106 8,557 193 2.31 2,691 52.72 0.0652
2019-02-15 2018-12-31 13F ARISTA NETWORKS COM 040413106 8,364 -166 -1.95 1,762 -22.31 0.0499
2018-11-14 2018-09-30 13F ARISTA NETWORKS COM 040413106 8,530 557 6.99 2,268 10.47 0.0561
2018-07-18 2018-06-30 13F ARISTA NETWORKS COM 040413106 7,973 -3,504 -30.53 2,053 -29.93 0.0502
2018-05-22 2018-03-31 13F ARISTA NETWORKS COM 040413106 11,477 883 8.33 2,930 17.39 0.0777
2018-02-13 2017-12-31 13F ARISTA NETWORKS COM 040413106 10,594 582 5.81 2,496 31.51 0.0675
2017-11-09 2017-09-30 13F ARISTA NETWORKS COM 040413106 10,012 123 1.24 1,898 28.16 0.0591
2017-08-10 2017-06-30 13F ARISTA NETWORKS COM 040413106 9,889 4,194 73.64 1,481 96.68 0.0485
2017-05-12 2017-03-31 13F ARISTA NETWORKS COM 040413106 5,695 -1,256 -18.07 753 11.89 0.0375
2017-02-14 2016-12-31 13F ARISTA NETWORKS COM 040413106 6,951 724 11.63 673 26.98 0.0304
2016-11-15 2016-09-30 13F/A-1 ARISTA NETWORKS COM 040413106 6,227 1 0.02 530 12.77 0.0308
2016-08-16 2016-06-30 13F ARISTA NETWORKS COM 040413106 6,226 2,236 56.04 470 86.51 0.0272
2016-05-11 2016-03-31 13F ARISTA NETWORKS COM 040413106 3,990 314 8.54 252 -11.89 0.0246
2016-02-10 2015-12-31 13F ARISTA NETWORKS COM 040413106 3,676 -263 -6.68 286 18.67 0.0353
2015-11-04 2015-09-30 13F ARISTA NETWORKS COM 040413106 3,939 56 1.44 241 -23.97 0.0253
2015-07-10 2015-06-30 13F ARISTA NETWORKS COM 040413106 3,883 3,883 317 0.0311
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.