Arista Networks, Inc.
US ˙ NYSE ˙ US0404132054

SecurityANET / Arista Networks, Inc.
InstitutionOssiam
Latest Disclosed Ownership44,812 shares
Latest Disclosed Value $ 5,502,017
Ossiam reports 2.10% increase in ownership of ANET / Arista Networks, Inc.

On May 14, 2026 - Ossiam filed a 13F-HR form disclosing ownership of 44,812 shares of Arista Networks, Inc. (US:ANET) valued at $5,502,017 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 43,892 shares of Arista Networks, Inc.. This represents a change in shares of 2.10% during the quarter. The current value of the position is $7,813,868 USD.

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.

Upgrade to unlock premium data and export to Excel .

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 COM SHS 040413205 44,812 920 2.10 5,502 -4.33 0.0968
2026-02-13 2025-12-31 13F ARISTA NETWORKS COM SHS 040413205 43,892 -10,409 -19.17 5,751 -27.31 0.1149
2025-11-14 2025-09-30 13F ARISTA NETWORKS COM SHS 040413205 54,301 29,005 114.66 7,912 205.72 0.1018
2025-08-13 2025-06-30 13F ARISTA NETWORKS COM SHS 040413205 25,296 -56,333 -69.01 2,588 -59.08 0.0291
2025-05-14 2025-03-31 13F ARISTA NETWORKS COM SHS 040413205 81,629 20,903 34.42 6,325 -5.78 0.0883
2025-02-13 2024-12-31 13F ARISTA NETWORKS COM SHS 040413205 60,726 -33,227 -35.37 6,712 -81.39 0.1159
2024-11-13 2024-09-30 13F ARISTA NETWORKS COM 040413106 93,953 699 0.75 36,061 10.34 0.6971
2024-08-13 2024-06-30 13F ARISTA NETWORKS COM 040413106 93,254 89,329 2,275.90 32,684 2,771.97 0.6194
2024-05-13 2024-03-31 13F ARISTA NETWORKS COM 040413106 3,925 -2,163 -35.53 1,138 -20.59 0.0199
2024-02-13 2023-12-31 13F ARISTA NETWORKS COM 040413106 6,088 2,507 70.01 1,434 117.78 0.0231
2023-11-14 2023-09-30 13F ARISTA NETWORKS COM 040413106 3,581 -443 -11.01 659 0.92 0.0116
2023-08-11 2023-06-30 13F ARISTA NETWORKS COM 040413106 4,024 -128,230 -96.96 652 -97.06 0.0117
2023-05-12 2023-03-31 13F ARISTA NETWORKS COM 040413106 132,254 129,664 5,006.33 22,200 6,970.06 0.4613
2023-02-13 2022-12-31 13F ARISTA NETWORKS COM 040413106 2,590 -15,867 -85.97 314 -84.93 0.0081
2022-11-14 2022-09-30 13F ARISTA NETWORKS COM 040413106 18,457 -4,105 -18.19 2,084 -1.47 0.0604
2022-08-12 2022-06-30 13F ARISTA NETWORKS COM 040413106 22,562 15,529 220.80 2,115 116.48 0.0636
2022-05-13 2022-03-31 13F ARISTA NETWORKS COM 040413106 7,033 6,809 3,039.73 977 2,953.13 0.0256
2022-02-14 2021-12-31 13F ARISTA NETWORKS COM 040413106 224 199 796.00 32 255.56 0.0008
2021-11-12 2021-09-30 13F ARISTA NETWORKS COM 040413106 25 -8,374 -99.70 9 -99.72 0.0003
2021-08-13 2021-06-30 13F ARISTA NETWORKS COM 040413106 8,399 -275 -3.17 3,195 21.99 0.0867
2021-05-17 2021-03-31 13F ARISTA NETWORKS COM 040413106 8,674 7,783 873.51 2,619 911.20 0.0815
2021-02-12 2020-12-31 13F ARISTA NETWORKS COM 040413106 891 -1,206 -57.51 259 -40.32 0.0090
2020-11-12 2020-09-30 13F ARISTA NETWORKS COM 040413106 2,097 1,811 633.22 434 623.33 0.0182
2020-08-13 2020-06-30 13F ARISTA NETWORKS COM 040413106 286 66 30.00 60 33.33 0.0038
2020-05-14 2020-03-31 13F ARISTA NETWORKS COM 040413106 220 -366 -62.46 45 -62.18 0.0031
2020-02-14 2019-12-31 13F ARISTA NETWORKS COM 040413106 586 431 278.06 119 221.62 0.0091
2019-11-13 2019-09-30 13F ARISTA NETWORKS COM 040413106 155 -256 -62.29 37 -65.42 0.0026
2019-08-13 2019-06-30 13F ARISTA NETWORKS COM 040413106 411 411 107 0.0083
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.