Arista Networks, Inc.
MX ˙ BMV ˙ US0404132054
SecurityMX:ANET / Arista Networks, Inc.
InstitutionUtah Retirement Systems
Latest Disclosed Ownership167,723 shares
Latest Disclosed Value $ 20,593,030
Utah Retirement Systems reports 1.56% decrease in ownership of ANET / Arista Networks, Inc.

On May 15, 2026 - Utah Retirement Systems filed a 13F-HR form disclosing ownership of 167,723 shares of Arista Networks, Inc. (MX:ANET) valued at $20,593,030 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 170,378 shares of Arista Networks, Inc.. This represents a change in shares of -1.56% 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)
2026-05-15 2026-03-31 13F ARISTA NETWORKS COM SHS 040413205 167,723 -2,655 -1.56 20,593 -7.75 0.2105
2026-02-17 2025-12-31 13F ARISTA NETWORKS COM SHS 040413205 170,378 0 0.00 22,325 -10.07 0.2124
2025-11-14 2025-09-30 13F ARISTA NETWORKS COM SHS 040413205 170,378 457 0.27 24,826 42.80 0.2411
2025-08-14 2025-06-30 13F ARISTA NETWORKS COM SHS 040413205 169,921 -708 -0.41 17,385 31.50 0.1815
2025-05-15 2025-03-31 13F ARISTA NETWORKS COM SHS 040413205 170,629 -319 -0.19 13,220 -30.03 0.1525
2025-02-14 2024-12-31 13F ARISTA NETWORKS COM SHS 040413205 170,948 128,336 301.17 18,895 15.52 0.2082
2024-11-14 2024-09-30 13F ARISTA NETWORKS COM 040413106 42,612 200 0.47 16,355 10.03 0.1845
2024-08-14 2024-06-30 13F ARISTA NETWORKS COM 040413106 42,412 -1,000 -2.30 14,865 18.08 0.1765
2024-05-15 2024-03-31 13F ARISTA NETWORKS COM 040413106 43,412 0 0.00 12,589 23.13 0.1472
2024-02-14 2023-12-31 13F ARISTA NETWORKS COM 040413106 43,412 300 0.70 10,224 28.93 0.1302
2023-11-14 2023-09-30 13F ARISTA NETWORKS COM 040413106 43,112 100 0.23 7,930 13.76 0.1133
2023-08-14 2023-06-30 13F ARISTA NETWORKS COM 040413106 43,012 -800 -1.83 6,971 -5.22 0.0967
2023-05-16 2023-03-31 13F ARISTA NETWORKS COM 040413106 43,812 100 0.23 7,354 38.65 0.1063
2023-02-15 2022-12-31 13F ARISTA NETWORKS COM 040413106 43,712 -300 -0.68 5,304 6.76 0.0841
2022-11-14 2022-09-30 13F ARISTA NETWORKS COM 040413106 44,012 -500 -1.12 4,968 19.08 0.0828
2022-08-16 2022-06-30 13F ARISTA NETWORKS COM 040413106 44,512 1,600 3.73 4,172 -30.05 0.0668
2022-05-13 2022-03-31 13F ARISTA NETWORKS COM 040413106 42,912 -600 -1.38 5,964 -4.65 0.0794
2022-02-14 2021-12-31 13F ARISTA NETWORKS COM 040413106 43,512 32,684 301.85 6,255 68.10 0.0773
2021-11-16 2021-09-30 13F ARISTA NETWORKS COM 040413106 10,828 -600 -5.25 3,721 -10.14 0.0503
2021-08-16 2021-06-30 13F ARISTA NETWORKS COM 040413106 11,428 170 1.51 4,141 21.83 0.0533
2021-05-17 2021-03-31 13F ARISTA NETWORKS COM 040413106 11,258 -500 -4.25 3,399 -0.50 0.0474
2021-02-16 2020-12-31 13F ARISTA NETWORKS COM 040413106 11,758 540 4.81 3,416 47.18 0.0485
2020-11-16 2020-09-30 13F ARISTA NETWORKS COM 040413106 11,218 100 0.90 2,321 -0.60 0.0385
2020-08-13 2020-06-30 13F/A-1 ARISTA NETWORKS COM 040413106 11,118 -200 -1.77 2,335 1.88 0.0429
2020-08-13 2020-06-30 13F ARISTA NETWORKS COM 040413106 11,118 -200 2,335 42,856.6971
2020-05-15 2020-03-31 13F ARISTA NETWORKS COM 040413106 11,318 0 0.00 2,292 -0.48 0.0496
2020-02-12 2019-12-31 13F ARISTA NETWORKS COM 040413106 11,318 0 0.00 2,303 -14.83 0.0405
2019-11-14 2019-09-30 13F ARISTA NETWORKS COM 040413106 11,318 200 1.80 2,704 -6.31 0.0515
2019-08-14 2019-06-30 13F ARISTA NETWORKS COM 040413106 11,118 270 2.49 2,886 -15.42 0.0553
2019-05-15 2019-03-31 13F ARISTA NETWORKS COM 040413106 10,848 248 2.34 3,412 52.73 0.0676
2019-02-08 2018-12-31 13F ARISTA NETWORKS COM 040413106 10,600 0 0.00 2,234 -20.72 0.0505
2018-11-13 2018-09-30 13F ARISTA NETWORKS COM 040413106 10,600 0 0.00 2,818 3.26 0.0546
2018-08-10 2018-06-30 13F ARISTA NETWORKS COM 040413106 10,600 700 7.07 2,729 7.95 0.0565
2018-05-15 2018-03-31 13F ARISTA NETWORKS COM 040413106 9,900 100 1.02 2,528 9.53 0.0538
2018-02-14 2017-12-31 13F ARISTA NETWORKS COM 040413106 9,800 100 1.03 2,308 25.50 0.0485
2017-11-13 2017-09-30 13F ARISTA NETWORKS COM 040413106 9,700 0 0.00 1,839 26.57 0.0414
2017-08-08 2017-06-30 13F ARISTA NETWORKS COM 040413106 9,700 2,500 34.72 1,453 52.47 0.0339
2017-05-11 2017-03-31 13F ARISTA NETWORKS COM 040413106 7,200 0 0.00 953 36.73 0.0228
2017-02-10 2016-12-31 13F ARISTA NETWORKS COM 040413106 7,200 100 1.41 697 15.40 0.0175
2016-11-07 2016-09-30 13F ARISTA NETWORKS COM 040413106 7,100 -100 -1.39 604 30.17 0.0156
2016-08-03 2016-06-30 13F ARISTA NETWORKS COM 040413106 7,200 1,200 20.00 464 22.43 0.0124
2016-05-10 2016-03-31 13F ARISTA NETWORKS COM 040413106 6,000 0 0.00 379 -18.84 0.0103
2016-02-11 2015-12-31 13F ARISTA NETWORKS COM 040413106 6,000 0 0.00 467 26.90 0.0127
2015-11-03 2015-09-30 13F ARISTA NETWORKS COM 040413106 6,000 0 0.00 368 -24.90 0.0105
2015-08-11 2015-06-30 13F ARISTA NETWORKS COM 040413106 6,000 6,000 490 0.0130
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.