Arista Networks, Inc.
MX ˙ BMV ˙ US0404132054
SecurityMX:ANET / Arista Networks, Inc.
InstitutionAdvisory Services Network, LLC
Latest Disclosed Ownership176,806 shares
Latest Disclosed Value $ 21,708,136
Advisory Services Network, LLC reports 0.60% increase in ownership of ANET / Arista Networks, Inc.

On May 15, 2026 - Advisory Services Network, LLC filed a 13F-HR form disclosing ownership of 176,806 shares of Arista Networks, Inc. (MX:ANET) valued at $21,708,136 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 175,752 shares of Arista Networks, Inc.. This represents a change in shares of 0.60% 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 INC COM SHS Stock 040413205 176,806 1,054 0.60 21,708 -5.73 0.2006
2026-02-17 2025-12-31 13F ARISTA NETWORKS INC COM SHS Stock 040413205 175,752 -4,095 -2.28 23,029 -12.12 0.3259
2025-11-18 2025-09-30 13F ARISTA NETWORKS Stock 040413205 179,847 3,661 2.08 26,206 20.71 0.3843
2025-08-19 2025-06-30 13F ARISTA NETWORKS Stock 040413205 176,186 -5,179 -2.86 21,710 54.49 0.3494
2025-05-15 2025-03-31 13F ARISTA NETWORKS Stock 040413205 181,365 2,948 1.65 14,052 -28.74 0.2700
2025-02-13 2024-12-31 13F ARISTA NETWORKS Stock 040413205 178,417 133,187 294.47 19,720 24.40 0.3674
2024-11-14 2024-09-30 13F ARISTA NETWORKS Stock 040413106 45,230 0 0.00 15,852 0.00 0.3277
2024-08-13 2024-06-30 13F ARISTA NETWORKS Stock 040413106 45,230 7,779 20.77 15,852 45.98 0.3277
2024-05-06 2024-03-31 13F ARISTA NETWORKS Stock 040413106 37,451 4,073 12.20 10,860 38.16 0.2408
2024-02-09 2023-12-31 13F ARISTA NETWORKS Stock 040413106 33,378 2,264 7.28 7,861 37.36 0.1921
2023-11-14 2023-09-30 13F ARISTA NETWORKS Stock 040413106 31,114 11,986 62.66 5,723 84.64 0.1537
2023-08-09 2023-06-30 13F ARISTA NETWORKS Stock 040413106 19,128 -1,596 -7.70 3,100 -10.90 0.0826
2023-05-17 2023-03-31 13F ARISTA NETWORKS Stock 040413106 20,724 -3,072 -12.91 3,479 20.47 0.0964
2023-02-13 2022-12-31 13F ARISTA NETWORKS Stock 040413106 23,796 4,633 24.18 2,888 33.41 0.0885
2022-11-14 2022-09-30 13F ARISTA NETWORKS Stock 040413106 19,163 -1,110 -5.48 2,164 13.83 0.0764
2022-08-02 2022-06-30 13F ARISTA NETWORKS Stock 040413106 20,273 -7,528 -27.08 1,901 -50.79 0.0650
2022-05-23 2022-03-31 13F ARISTA NETWORKS Stock 040413106 27,801 -807 -2.82 3,863 -6.06 0.1137
2022-02-14 2021-12-31 13F ARISTA NETWORKS Stock 040413106 28,608 21,387 296.18 4,112 65.67 0.1183
2021-11-05 2021-09-30 13F ARISTA NETWORKS Stock 040413106 7,221 70 0.98 2,482 -4.21 0.0789
2021-08-12 2021-06-30 13F ARISTA NETWORKS Stock 040413106 7,151 2,009 39.07 2,591 66.84 0.0817
2021-05-24 2021-03-31 13F ARISTA NETWORKS Stock 040413106 5,142 573 12.54 1,553 16.94 0.0577
2021-02-09 2020-12-31 13F ARISTA NETWORKS Stock 040413106 4,569 3,196 232.77 1,328 365.96 0.0533
2020-11-16 2020-09-30 13F ARISTA NETWORKS Stock 040413106 1,373 -148 -9.73 285 -10.94 0.0134
2020-08-10 2020-06-30 13F ARISTA NETWORKS Stock 040413106 1,521 564 58.93 320 64.95 0.0176
2020-05-15 2020-03-31 13F ARISTA NETWORKS Stock 040413106 957 -59 -5.81 194 -6.28 0.0127
2020-02-04 2019-12-31 13F ARISTA NETWORKS Stock 040413106 1,016 -508 -33.33 207 -47.73 0.0109
2019-11-04 2019-09-30 13F ARISTA NETWORKS Stock 040413106 1,524 0 0.00 396 0.00 0.0243
2019-08-01 2019-06-30 13F ARISTA NETWORKS Stock 040413106 1,524 -315 -17.13 396 -31.49 0.0243
2019-05-20 2019-03-31 13F ARISTA NETWORKS Stock 040413106 1,839 -70 -3.67 578 43.78 0.0406
2019-02-15 2018-12-31 13F ARISTA NETWORKS Stock 040413106 1,909 167 9.59 402 -13.17 0.0351
2018-11-02 2018-09-30 13F ARISTA NETWORKS Stock 040413106 1,742 0 0.00 463 -3.74 0.0338
2018-07-27 2018-06-30 13F ARISTA NETWORKS Stock 040413106 1,742 165 10.46 481 19.35 0.0366
2018-04-23 2018-03-31 13F ARISTA NETWORKS Stock 040413106 1,577 -96 -5.74 403 2.28 0.0322
2018-02-08 2017-12-31 13F ARISTA NETWORKS Stock 040413106 1,673 -495 -22.83 394 -4.14 0.0343
2017-10-12 2017-09-30 13F ARISTA NETWORKS Stock 040413106 2,168 600 38.27 411 74.89 0.0470
2017-08-17 2017-06-30 13F ARISTA NETWORKS INC COM Stock 040413106 1,568 1,347 609.50 235 710.34 0.0306
2017-04-28 2017-03-31 13F ARISTA NETWORKS INC COM Stock 040413106 221 2 0.91 29 52.63 0.0042
2016-10-07 2016-09-30 13F ARISTA NETWORKS Stock 040413106 219 100 84.03 19 137.50 0.0036
2016-07-27 2016-06-30 13F ARISTA NETWORKS INC COM Stock 040413106 119 100 526.32 8 700.00 0.0018
2016-04-21 2016-03-31 13F ARISTA NETWORKS Stock 040413106 19 0 0.00 1 0.00 0.0003
2016-01-27 2015-12-31 13F ARISTA NETWORKS INC COM Stock 040413106 19 0 0.00 1 0.00 0.0003
2015-10-01 2015-09-30 13F ARISTA NETWORKS INC COM Stock 040413106 19 0 0.00 1 -50.00 0.0003
2015-07-02 2015-06-30 13F ARISTA NETWORKS INC COM Stock 040413106 19 19 2 0.0006
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.