Arista Networks, Inc.
MX ˙ BMV ˙ US0404132054
SecurityMX:ANET / Arista Networks, Inc.
InstitutionNeuberger Berman Group LLC
Latest Disclosed Ownership1,178,818 shares
Latest Disclosed Value $ 143,656,221
Neuberger Berman Group LLC reports 4.24% increase in ownership of ANET / Arista Networks, Inc.

On May 14, 2026 - Neuberger Berman Group LLC filed a 13F-HR form disclosing ownership of 1,178,818 shares of Arista Networks, Inc. (MX:ANET) valued at $143,656,221 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,130,831 shares of Arista Networks, Inc.. This represents a change in shares of 4.24% 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)
2026-05-14 2026-03-31 13F ARISTA NETWORKS Common 040413205 1,178,818 47,987 4.24 143,656 -3.21 0.1093
2026-02-13 2025-12-31 13F ARISTA NETWORKS Common 040413205 1,130,831 -490,234 -30.24 148,421 -37.05 0.1105
2025-11-12 2025-09-30 13F ARISTA NETWORKS Common 040413205 1,621,065 99,402 6.53 235,788 52.02 0.1723
2025-08-25 2025-06-30 13F/A-1 ARISTA NETWORKS Common 040413205 1,521,663 122,007 8.72 155,101 41.65 0.1194
2025-08-13 2025-06-30 13F ARISTA NETWORKS Common 040413205 1,521,663 122,007 155,101 0.0617
2025-05-13 2025-03-31 13F ARISTA NETWORKS Common 040413205 1,399,656 -1,199,032 -46.14 109,499 -61.90 0.0917
2025-02-13 2024-12-31 13F ARISTA NETWORKS Common 040413205 2,598,688 1,901,671 272.83 287,410 7.50 0.2282
2024-11-14 2024-09-30 13F ARISTA NETWORKS Common 040413106 697,017 190,709 37.67 267,360 50.76 0.2086
2024-11-14 2024-06-30 13F/A-1 ARISTA NETWORKS Common 040413106 506,308 -18,052 -3.44 177,337 16.68 0.1456
2024-08-13 2024-06-30 13F ARISTA NETWORKS Common 040413106 506,308 -18,052 177,337 0.1455
2024-11-14 2024-03-31 13F/A-1 ARISTA NETWORKS Common 040413106 524,360 -293,588 -35.89 151,986 -21.13 0.1256
2024-05-13 2024-03-31 13F ARISTA NETWORKS Common 040413106 524,360 -293,588 151,986 0.1256
2024-11-14 2023-12-31 13F/A-2 ARISTA NETWORKS Common 040413106 817,948 -736,998 -47.40 192,701 -32.63 0.1680
2024-02-09 2023-12-31 13F ARISTA NETWORKS Common 040413106 817,948 -736,998 192,701 0.1680
2023-11-14 2023-09-30 13F ARISTA NETWORKS Common 040413106 1,554,946 97,287 6.67 286,028 22.13 0.2606
2023-08-11 2023-06-30 13F ARISTA NETWORKS Common 040413106 1,457,659 -231,878 -13.72 234,201 -15.93 0.2094
2023-05-12 2023-03-31 13F ARISTA NETWORKS Common 040413106 1,689,537 63,871 3.93 278,568 40.90 0.2583
2023-02-13 2022-12-31 13F ARISTA NETWORKS Common 040413106 1,625,666 -505,631 -23.72 197,705 -18.62 0.1938
2022-11-15 2022-09-30 13F ARISTA NETWORKS Common 040413106 2,131,297 -100,873 -4.52 242,949 15.30 0.2537
2022-08-15 2022-06-30 13F ARISTA NETWORKS Common 040413106 2,232,170 142,052 6.80 210,704 -27.45 0.2118
2022-05-23 2022-03-31 13F/A-1 ARISTA NETWORKS Common 040413106 2,090,118 120,277 6.11 290,431 2.61 0.2461
2022-05-13 2022-03-31 13F ARISTA NETWORKS Common 040413106 1,464,379 -505,462 203,348 0.0907
2022-02-11 2021-12-31 13F ARISTA NETWORKS Common 040413106 1,969,841 1,654,854 525.37 283,035 161.48 0.2221
2021-11-12 2021-09-30 13F ARISTA NETWORKS Common 040413106 314,987 -1,793 -0.57 108,244 -5.68 0.0946
2021-08-13 2021-06-30 13F ARISTA NETWORKS Common 040413106 316,780 246 0.08 114,760 20.21 0.1002
2021-05-13 2021-03-31 13F ARISTA NETWORKS Common 040413106 316,534 -8,813 -2.71 95,465 1.03 0.0912
2021-02-10 2020-12-31 13F ARISTA NETWORKS Common 040413106 325,347 -8,616 -2.58 94,491 36.81 0.0980
2020-11-12 2020-09-30 13F ARISTA NETWORKS Common 040413106 333,963 -12,650 -3.65 69,066 -5.04 0.0819
2020-08-13 2020-06-30 13F ARISTA NETWORKS Common 040413106 346,613 -119,551 -25.65 72,735 -22.75 0.0904
2020-05-14 2020-03-31 13F ARISTA NETWORKS Common 040413106 466,164 -156,376 -25.12 94,150 -25.64 0.1435
2020-02-12 2019-12-31 13F ARISTA NETWORKS Common 040413106 622,540 95,985 18.23 126,621 0.61 0.1478
2019-11-13 2019-09-30 13F ARISTA NETWORKS Common 040413106 526,555 347,100 193.42 125,858 170.14 0.1537
2019-08-13 2019-06-30 13F ARISTA NETWORKS Common 040413106 179,455 62,734 53.75 46,590 26.93 0.0557
2019-05-13 2019-03-31 13F ARISTA NETWORKS Common 040413106 116,721 21,948 23.16 36,704 83.80 0.0450
2019-02-12 2018-12-31 13F ARISTA NETWORKS Common 040413106 94,773 45,971 94.20 19,969 53.92 0.0278
2018-11-16 2018-09-30 13F/A-1 ARISTA NETWORKS Common 040413106 48,802 -69,102 -58.61 12,974 -57.26 0.0147
2018-11-13 2018-09-30 13F ARISTA NETWORKS Common 040413106 48,802 -69,102 12,974
2018-08-13 2018-06-30 13F ARISTA NETWORKS Common 040413106 117,904 4,071 3.58 30,359 4.46 0.0335
2018-05-08 2018-03-31 13F ARISTA NETWORKS Common 040413106 113,833 45,653 66.96 29,062 80.94 0.0332
2018-02-14 2017-12-31 13F ARISTA NETWORKS Common 040413106 68,180 39,960 141.60 16,062 200.17 0.0185
2017-11-15 2017-09-30 13F ARISTA NETWORKS COMMON STOCK 040413106 28,220 28,220 5,351 0.0067
2016-08-05 2016-06-30 13F ARISTA NETWORKS COMMON STOCK 040413106 0 -6,414 -100.00 0 -100.00
2016-05-06 2016-03-31 13F ARISTA NETWORKS COMMON STOCK 040413106 6,414 1,355 26.78 405 2.79 0.0006
2016-01-28 2015-12-31 13F ARISTA NETWORKS COMMON STOCK 040413106 5,059 5,059 0.00 394 0.0005
2015-02-05 2014-12-31 13F ARISTA NETWORKS COMMON STOCK 040413106 0 -15,300 -100.00 0 -100.00
2014-11-04 2014-09-30 13F ARISTA NETWORKS COMMON STOCK 040413106 15,300 15,300 1,351 0.0014
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.