Arista Networks, Inc.
MX ˙ BMV ˙ US0404132054
SecurityMX:ANET / Arista Networks, Inc.
InstitutionEngineers Gate Manager LP
Latest Disclosed Ownership23,073 shares
Latest Disclosed Value $ 2,832,903
Engineers Gate Manager LP reports 35.52% decrease in ownership of ANET / Arista Networks, Inc.

On May 15, 2026 - Engineers Gate Manager LP filed a 13F-HR form disclosing ownership of 23,073 shares of Arista Networks, Inc. (MX:ANET) valued at $2,832,903 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 35,785 shares of Arista Networks, Inc.. This represents a change in shares of -35.52% 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 23,073 -12,712 -35.52 2,833 -39.59 0.0354
2026-02-17 2025-12-31 13F ARISTA NETWORKS COM SHS 040413205 35,785 -69,917 -66.15 4,689 -69.56 0.0556
2025-11-14 2025-09-30 13F ARISTA NETWORKS COM SHS 040413205 105,702 4,200 4.14 15,402 48.31 0.1763
2025-08-14 2025-06-30 13F ARISTA NETWORKS COM SHS 040413205 101,502 -240,531 -70.32 10,385 -60.82 0.1292
2025-05-15 2025-03-31 13F ARISTA NETWORKS COM SHS 040413205 342,033 278,378 437.32 26,501 276.69 0.4467
2025-02-14 2024-12-31 13F ARISTA NETWORKS COM SHS 040413205 63,655 46,815 278.00 7,036 8.85 0.1225
2024-11-14 2024-09-30 13F ARISTA NETWORKS COM 040413106 16,840 14,018 496.74 6,464 553.49 0.1261
2024-08-14 2024-06-30 13F ARISTA NETWORKS COM 040413106 2,822 812 40.40 989 69.93 0.0223
2024-05-15 2024-03-31 13F ARISTA NETWORKS COM 040413106 2,010 -4,567 -69.44 583 -62.40 0.0153
2024-02-14 2023-12-31 13F ARISTA NETWORKS COM 040413106 6,577 -16,134 -71.04 1,549 -62.94 0.0442
2023-11-14 2023-09-30 13F ARISTA NETWORKS COM 040413106 22,711 -6,560 -22.41 4,177 -11.93 0.1544
2023-08-14 2023-06-30 13F ARISTA NETWORKS COM 040413106 29,271 29,271 4,744 0.1793
2023-05-15 2023-03-31 13F ARISTA NETWORKS COM 040413106 0 -77,517 -100.00 0 -100.00
2023-02-14 2022-12-31 13F ARISTA NETWORKS COM 040413106 77,517 71,330 1,152.90 9,407 1,247.56 0.5650
2022-11-14 2022-09-30 13F ARISTA NETWORKS COM 040413106 6,187 -53,214 -89.58 698 -87.46 0.0434
2022-08-15 2022-06-30 13F ARISTA NETWORKS COM 040413106 59,401 48,373 438.64 5,568 263.21 0.2041
2022-05-16 2022-03-31 13F ARISTA NETWORKS COM 040413106 11,028 11,028 1,533 0.0600
2022-02-14 2021-12-31 13F ARISTA NETWORKS COM 040413106 0 -3,402 -100.00 0 -100.00
2021-11-15 2021-09-30 13F ARISTA NETWORKS COM 040413106 3,402 2,565 306.45 1,169 285.81 0.0666
2021-08-16 2021-06-30 13F ARISTA NETWORKS COM 040413106 837 837 303 0.0195
2021-05-17 2021-03-31 13F ARISTA NETWORKS COM 040413106 0 -1,700 -100.00 0 -100.00
2021-02-16 2020-12-31 13F ARISTA NETWORKS COM 040413106 1,700 2 0.12 494 40.74 0.0214
2020-11-16 2020-09-30 13F ARISTA NETWORKS COM 040413106 1,698 -27,970 -94.28 351 -94.37 0.0165
2020-08-17 2020-06-30 13F ARISTA NETWORKS COM 040413106 29,668 29,668 1,647.23 6,231 1,675.21 0.3171
2020-05-15 2020-03-31 13F ARISTA NETWORKS COM 040413106 0 -4,835 -100.00 0 -100.00
2020-02-14 2019-12-31 13F ARISTA NETWORKS COM 040413106 4,835 4,835 983 0.0432
2018-05-07 2018-03-31 13F ARISTA NETWORKS COM 040413106 0 -19,605 -100.00 0 -100.00
2018-02-01 2017-12-31 13F ARISTA NETWORKS COM 040413106 19,605 -120 -0.61 4,619 23.50 0.3171
2017-11-13 2017-09-30 13F ARISTA NETWORKS COM 040413106 19,725 -15,698 -44.32 3,740 -29.51 0.3147
2017-08-10 2017-06-30 13F ARISTA NETWORKS COM 040413106 35,423 22,696 178.33 5,306 215.27 0.4781
2017-05-05 2017-03-31 13F ARISTA NETWORKS COM 040413106 12,727 -16,335 -56.21 1,683 -40.15 0.1671
2017-02-10 2016-12-31 13F ARISTA NETWORKS COM 040413106 29,062 29,062 128.35 2,812 67.08 0.3017
2016-11-09 2016-09-30 13F ARISTA NETWORKS COM 040413106 0 -25,791 -100.00 0 -100.00
2016-08-11 2016-06-30 13F ARISTA NETWORKS COM 040413106 25,791 25,791 0.00 1,660 0.1191
2015-11-16 2015-09-30 13F ARISTA NETWORKS COM 040413106 0 -26,127 -100.00 0 -100.00
2015-08-14 2015-06-30 13F ARISTA NETWORKS COM 040413106 26,127 26,127 2,136 0.2091
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.