Arista Networks, Inc.
MX ˙ BMV ˙ US0404132054
SecurityMX:ANET / Arista Networks, Inc.
InstitutionGuerra Pan Advisors, Llc
Latest Disclosed Ownership19,460 shares
Latest Disclosed Value $ 2,389,299
Guerra Pan Advisors, Llc reports 0.39% increase in ownership of ANET / Arista Networks, Inc.

On May 12, 2026 - Guerra Pan Advisors, Llc filed a 13F-HR form disclosing ownership of 19,460 shares of Arista Networks, Inc. (MX:ANET) valued at $2,389,299 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 13, 2026 disclosing 19,385 shares of Arista Networks, Inc.. This represents a change in shares of 0.39% 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)
2026-05-12 2026-03-31 13F ARISTA NETWORKS COM SHS 040413205 19,460 75 0.39 2,389 -5.94 1.4779
2026-01-13 2025-12-31 13F ARISTA NETWORKS COM SHS 040413205 19,385 0 0.00 2,540 -10.06 1.5070
2025-11-12 2025-09-30 13F ARISTA NETWORKS COM SHS 040413205 19,385 0 0.00 2,825 42.41 1.7083
2025-08-12 2025-06-30 13F ARISTA NETWORKS COM SHS 040413205 19,385 1,679 9.48 1,983 44.64 1.3076
2025-04-28 2025-03-31 13F ARISTA NETWORKS COM SHS 040413205 17,706 230 1.32 1,372 -29.00 1.0762
2025-01-21 2024-12-31 13F ARISTA NETWORKS COM SHS 040413205 17,476 13,461 335.27 1,932 25.31 1.3981
2024-11-04 2024-09-30 13F ARISTA NETWORKS COM 040413106 4,015 0 0.00 1,541 9.52 1.2326
2024-08-13 2024-06-30 13F ARISTA NETWORKS COM 040413106 4,015 1,636 68.77 1,407 104.21 1.1778
2024-05-13 2024-03-31 13F ARISTA NETWORKS COM 040413106 2,379 64 2.76 690 26.42 0.6380
2024-01-30 2023-12-31 13F ARISTA NETWORKS COM 040413106 2,315 991 74.85 545 124.28 0.5203
2023-11-09 2023-09-30 13F ARISTA NETWORKS COM 040413106 1,324 1,324 244 0.2811
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.