Arista Networks, Inc.
MX ˙ BMV ˙ US0404132054
SecurityMX:ANET / Arista Networks, Inc.
InstitutionGiverny Capital Inc.
ManagerFrancois Rochon
Latest Disclosed Ownership423,361 shares
Latest Disclosed Value $ 51,981,534
Giverny Capital Inc. reports 1.00% increase in ownership of ANET / Arista Networks, Inc.

On May 15, 2026 - Giverny Capital Inc. filed a 13F-HR form disclosing ownership of 423,361 shares of Arista Networks, Inc. (MX:ANET) valued at $51,981,534 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 419,158 shares of Arista Networks, Inc.. This represents a change in shares of 1.00% 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 040413205 423,361 4,203 1.00 51,982 -5.35 1.9031
2026-02-13 2025-12-31 13F ARISTA NETWORKS COM 040413205 419,158 6,759 1.64 54,922 -8.60 1.8321
2025-11-17 2025-09-30 13F/A-2 ARISTA NETWORKS COM 040413205 412,399 -70,162 -14.54 60,091 21.71 2.0362
2025-11-14 2025-09-30 13F/A-1 ARISTA NETWORKS COM 040413205 412,399 -70,162 60,091 1.9165
2025-11-14 2025-09-30 13F ARISTA NETWORKS COM 040413205 412,399 -70,162 60,091 1.8425
2025-08-13 2025-06-30 13F ARISTA NETWORKS COM 040413205 482,561 16,033 3.44 49,371 36.58 1.6932
2025-08-12 2025-03-31 13F/A-1 ARISTA NETWORKS COM 040413106 466,528 56,100 13.67 36,147 -20.32 1.3325
2025-05-13 2025-03-31 13F ARISTA NETWORKS COM 040413106 466,528 56,100 36,147 1.3324
2025-08-12 2024-12-31 13F/A-1 ARISTA NETWORKS COM 040413106 410,428 303,758 284.76 45,365 10.80 1.6581
2025-02-13 2024-12-31 13F ARISTA NETWORKS COM 040413106 410,428 303,758 45,365 1.6580
2024-11-13 2024-09-30 13F ARISTA NETWORKS COM 040413106 106,670 9,051 9.27 40,942 19.67 1.5565
2024-08-14 2024-06-30 13F ARISTA NETWORKS COM 040413106 97,619 2,006 2.10 34,214 23.44 1.4456
2024-05-13 2024-03-31 13F ARISTA NETWORKS COM 040413106 95,613 -3,831 -3.85 27,717 18.35 1.1271
2024-02-09 2023-12-31 13F ARISTA NETWORKS COM 040413106 99,444 744 0.75 23,420 29.01 1.1008
2024-01-25 2023-09-30 13F/A-1 ARISTANETWORKSINC COM 040413106 98,700 -5,257 -5.06 18,154 7.75 0.9854
2023-11-13 2023-09-30 13F ARISTA NETWORKS COM 040413106 98,700 -5,257 18,154 0.9860
2023-08-07 2023-06-30 13F ARISTA NETWORKS COM 040413106 103,957 3,505 3.49 16,847 -0.08 0.8864
2023-05-12 2023-03-31 13F ARISTA NETWORKS COM 040413106 100,452 -783 -0.77 16,862 37.26 1.0157
2023-05-17 2022-12-31 13F/A-1 ARISTA NETWORKS COM 040413106 101,235 7,252 7.72 12,285 15.78 0.7594
2023-02-10 2022-12-31 13F ARISTA NETWORKS COM 040413106 101,235 7,252 12 0.7594
2022-11-14 2022-09-30 13F ARISTA NETWORKS COM 040413106 93,983 3,404 3.76 10,610 24.96 0.7186
2022-08-12 2022-06-30 13F ARISTA NETWORKS COM 040413106 90,579 1,844 2.08 8,491 -31.15 0.5595
2022-05-12 2022-03-31 13F ARISTA NETWORKS COM 040413106 88,735 1,599 1.84 12,332 -1.55 0.6961
2022-02-11 2021-12-31 13F ARISTA NETWORKS COM 040413106 87,136 62,988 260.84 12,526 50.95 0.6682
2021-11-15 2021-09-30 13F/A-1 ARISTA NETWORKS COM 040413106 24,148 8,112 50.59 8,298 42.82 0.4948
2021-11-12 2021-09-30 13F ARISTA NETWORKS COM 040413106 24,148 8,112 8,298 0.4896
2021-08-13 2021-06-30 13F ARISTA NETWORKS COM 040413106 16,036 -1,096 -6.40 5,810 12.34 0.3534
2021-05-17 2021-03-31 13F ARISTA NETWORKS COM 040413106 17,132 813 4.98 5,172 9.07 0.3459
2021-02-16 2020-12-31 13F ARISTA NETWORKS COM 040413106 16,319 2,274 16.19 4,742 63.18 0.3637
2020-11-13 2020-09-30 13F ARISTA NETWORKS COM 040413106 14,045 3,700 35.77 2,906 33.73 0.2665
2020-08-07 2020-06-30 13F ARISTA NETWORKS COM 040413106 10,345 10,345 2,173 0.2161
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.