Arista Networks, Inc.
MX ˙ BMV ˙ US0404132054
SecurityMX:ANET / Arista Networks, Inc.
InstitutionFred Alger Management, Llc
Latest Disclosed Ownership682,773 shares
Latest Disclosed Value $ 83,830,869
Fred Alger Management, Llc ownership in ANET / Arista Networks, Inc.

On May 15, 2026 - Fred Alger Management, Llc filed a 13F-HR form disclosing ownership of 682,773 shares of Arista Networks, Inc. (MX:ANET) valued at $83,830,869 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 0 shares of Arista Networks, Inc..

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 Equity 040413205 682,773 682,773 83,831 0.2343
2026-02-17 2025-12-31 13F Arista Networks Equity 040413205 0 -1,470 -100.00 0 -100.00
2025-11-14 2025-09-30 13F Arista Networks Equity 040413205 1,470 1,470 214 0.0008
2025-08-14 2025-06-30 13F Arista Networks Equity 040413205 0 -146,377 -100.00 0 -100.00
2025-05-16 2025-03-31 13F Arista Networks Equity 040413205 146,377 104,388 248.61 11,341 144.37 0.0646
2025-02-14 2024-12-31 13F Arista Networks Equity 040413205 41,989 11,990 39.97 4,641 -59.69 0.0221
2024-11-14 2024-09-30 13F ARISTA NETWORKS Common 040413106 29,999 -18,186 -37.74 11,514 -31.82 0.0558
2024-08-14 2024-06-30 13F ARISTA NETWORKS Common 040413106 48,185 -16,896 -25.96 16,888 -10.52 0.0821
2024-05-15 2024-03-31 13F ARISTA NETWORKS Common 040413106 65,081 -20,973 -24.37 18,872 -6.88 0.0936
2024-02-14 2023-12-31 13F ARISTA NETWORKS Common 040413106 86,054 -55,164 -39.06 20,267 -21.98 0.1093
2023-11-14 2023-09-30 13F ARISTA NETWORKS Common 040413106 141,218 -327,549 -69.87 25,974 -65.81 0.1377
2023-11-14 2023-09-30 13F ARISTA NETWORKS Common 040413106 141,218 25,974
2023-08-14 2023-06-30 13F ARISTA NETWORKS Common 040413106 468,767 -68,296 -12.72 75,968 -15.73 0.3880
2023-05-16 2023-03-31 13F/A-1 ARISTA NETWORKS Common 040413106 537,063 536,903 335,564.38 90,151 474,378.95 0.4821
2023-05-15 2023-03-31 13F ARISTA NETWORKS Common 040413106 537,063 536,903 90,151 0.4471
2023-02-14 2022-12-31 13F ARISTA NETWORKS Common 040413106 160 160 19 0.0001
2019-11-14 2019-09-30 13F ARISTA NETWORKS Common 040413106 0 -12,459 -100.00 0 -100.00
2019-08-14 2019-06-30 13F ARISTA NETWORKS Common 040413106 12,459 12,459 3,235 0.0124
2019-02-14 2018-12-31 13F ARISTA NETWORKS Common 040413106 0 -102 -100.00 0 -100.00
2018-11-14 2018-09-30 13F ARISTA NETWORKS Common 040413106 102 -154 -60.16 27 -59.09 0.0001
2018-07-19 2018-06-30 13F ARISTA NETWORKS Common 040413106 256 -45 -14.95 66 -14.29 0.0003
2018-05-10 2018-03-31 13F ARISTA NETWORKS Common 040413106 301 43 16.67 77 26.23 0.0004
2018-02-14 2017-12-31 13F ARISTA NETWORKS Common 040413106 258 258 61 0.0003
2016-08-15 2016-06-30 13F ARISTA NETWORKS Common 040413106 0 -491,088 -100.00 0 -100.00
2016-05-16 2016-03-31 13F ARISTA NETWORKS Common 040413106 491,088 -267,842 -35.29 30,987 -47.55 0.1570
2016-02-16 2015-12-31 13F ARISTA NETWORKS Common 040413106 758,930 -236,104 -23.73 59,075 -2.97 0.2873
2015-11-16 2015-09-30 13F ARISTA NETWORKS Common 040413106 995,034 -459,984 -31.61 60,886 -48.81 0.3323
2015-08-14 2015-06-30 13F ARISTA NETWORKS Common 040413106 1,455,018 4,649 0.32 118,933 16.26 0.5352
2015-05-15 2015-03-31 13F ARISTA NETWORKS Common 040413106 1,450,369 1,290,297 806.07 102,295 951.77 0.4607
2015-02-17 2014-12-31 13F ARISTA NETWORKS Common 040413106 160,072 160,072 9,726 0.0468
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.