Arista Networks, Inc.
MX ˙ BMV ˙ US0404132054
SecurityMX:ANET / Arista Networks, Inc.
InstitutionLazard Asset Management Llc
Latest Disclosed Ownership376,473 shares
Latest Disclosed Value $ 46,223,355
Lazard Asset Management Llc reports 552.26% increase in ownership of ANET / Arista Networks, Inc.

On May 15, 2026 - Lazard Asset Management Llc filed a 13F-HR form disclosing ownership of 376,473 shares of Arista Networks, Inc. (MX:ANET) valued at $46,223,355 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 57,718 shares of Arista Networks, Inc.. This represents a change in shares of 552.26% 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 376,473 318,755 552.26 46,223 511.25 0.0760
2026-02-17 2025-12-31 13F ARISTA NETWORKS COM SHS 040413205 57,718 1,718 3.07 7,563 -7.32 0.0128
2025-11-14 2025-09-30 13F ARISTA NETWORKS COM SHS 040413205 56,000 -64,444 -53.51 8,160 67,891.67 0.0110
2025-08-14 2025-06-30 13F ARISTA NETWORKS Common Stock 040413205 120,444 32,196 36.48 12 100.00 0.0170
2025-05-15 2025-03-31 13F ARISTA NETWORKS Common Stock 040413205 88,248 -25,654 -22.52 7 -50.00 0.0105
2025-02-14 2024-12-31 13F ARISTA NETWORKS Common Stock 040413205 113,902 91,023 397.85 13 50.00 0.0184
2024-11-14 2024-09-30 13F ARISTA NETWORKS Common Stock 040413106 22,879 5,547 32.00 9 33.33 0.0117
2024-08-14 2024-06-30 13F ARISTA NETWORKS Common Stock 040413106 17,332 4,698 37.19 6 100.00 0.0076
2024-07-09 2024-03-31 13F/A-1 ARISTA NETWORKS Common Stock 040413106 12,634 -3,280 -20.61 4 0.00 0.0045
2024-05-14 2024-03-31 13F ARISTA NETWORKS Common Stock 040413106 12,634 -3,280 4 0.0044
2024-02-14 2023-12-31 13F ARISTA NETWORKS Common Stock 040413106 15,914 -5,798 -26.70 4 0.00 0.0047
2023-11-14 2023-09-30 13F ARISTA NETWORKS Common Stock 040413106 21,712 -13,308 -38.00 4 -40.00 0.0054
2023-08-15 2023-06-30 13F ARISTA NETWORKS Common Stock 040413106 35,020 -9,803 -21.87 6 -28.57 0.0070
2023-05-15 2023-03-31 13F ARISTA NETWORKS Common Stock 040413106 44,823 14,877 49.68 8 -99.81 0.0099
2023-02-15 2022-12-31 13F ARISTA NETWORKS Common Stock 040413106 29,946 9,640 47.47 3,633 58.58 0.0050
2022-11-14 2022-09-30 13F ARISTA NETWORKS Common Stock 040413106 20,306 15,284 304.34 2,291 387.45 0.0033
2022-08-09 2022-06-30 13F ARISTA NETWORKS Common Stock 040413106 5,022 -603 -10.72 470 -39.82 0.0006
2022-05-13 2022-03-31 13F ARISTA NETWORKS Common Stock 040413106 5,625 4,595 446.12 781 427.70 0.0009
2022-02-09 2021-12-31 13F ARISTA NETWORKS Common Stock 040413106 1,030 -165 -13.81 148 -63.90 0.0002
2021-11-15 2021-09-30 13F ARISTA NETWORKS Common Stock 040413106 1,195 1,195 410 0.0005
2021-05-14 2021-03-31 13F ARISTA NETWORKS Common Stock 040413106 0 -5,153 -100.00 0 -100.00
2021-02-11 2020-12-31 13F ARISTA NETWORKS Common Stock 040413106 5,153 -50,803 -90.79 1,496 -87.08 0.0019
2020-11-13 2020-09-30 13F ARISTA NETWORKS Common Stock 040413106 55,956 6,673 13.54 11,578 11.88 0.0163
2020-08-13 2020-06-30 13F ARISTA NETWORKS Common Stock 040413106 49,283 44,382 905.57 10,349 944.30 0.0159
2020-05-14 2020-03-31 13F ARISTA NETWORKS Common Stock 040413106 4,901 1,466 42.68 991 41.98 0.0018
2020-02-13 2019-12-31 13F ARISTA NETWORKS Common Stock 040413106 3,435 335 10.81 698 -5.68 0.0010
2019-11-14 2019-09-30 13F ARISTA NETWORKS Common Stock 040413106 3,100 -23,767 -88.46 740 -89.39 0.0012
2019-08-14 2019-06-30 13F ARISTA NETWORKS Common Stock 040413106 26,867 14,016 109.07 6,975 72.61 0.0113
2019-08-28 2019-03-31 13F/A-1 ARISTA NETWORKS Common Stock 040413106 12,851 8,932 227.92 4,041 389.82 0.0066
2019-05-13 2019-03-31 13F ARISTA NETWORKS Common Stock 040413106 12,851 8,932 4,041
2019-08-28 2018-12-31 13F/A-1 ARISTA NETWORKS Common Stock 040413106 3,919 0 0.00 825 -20.75 0.0015
2019-02-13 2018-12-31 13F ARISTA NETWORKS Common Stock 040413106 3,919 0 825
2019-08-30 2018-09-30 13F/A-1 ARISTA NETWORKS Common Stock 040413106 3,919 3,100 378.51 1,041 395.71 0.0017
2018-11-13 2018-09-30 13F ARISTA NETWORKS Common Stock 040413106 3,919 3,100 1,041
2019-08-30 2018-06-30 13F/A-1 ARISTA NETWORKS Common Stock 040413106 819 -17,084 -95.43 210 -95.40 0.0004
2018-08-13 2018-06-30 13F ARISTA NETWORKS Common Stock 040413106 819 -17,084 210
2019-08-28 2018-03-31 13F/A-1 ARISTA NETWORKS Common Stock 040413106 17,903 17,903 4,570 0.0078
2018-05-14 2018-03-31 13F ARISTA NETWORKS Common Stock 040413106 17,903 17,903 4,570
2019-07-29 2016-06-30 13F/A-1 ARISTA NETWORKS Common Stock 040413106 0 -17,000 -100.00 0 -100.00
2019-07-25 2016-03-31 13F/A-1 ARISTA NETWORKS Common Stock 040413106 17,000 17,000 1,072 0.0023
2016-05-12 2016-03-31 13F ARISTA NETWORKS Common Stock 040413106 17,000 1,072
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.