Arista Networks, Inc.
MX ˙ BMV ˙ US0404132054
SecurityMX:ANET / Arista Networks, Inc.
InstitutionNbc Securities, Inc.
Latest Disclosed Ownership21,556 shares
Latest Disclosed Value $ 2,646,645
Nbc Securities, Inc. reports 41.23% increase in ownership of ANET / Arista Networks, Inc.

On April 14, 2026 - Nbc Securities, Inc. filed a 13F-HR form disclosing ownership of 21,556 shares of Arista Networks, Inc. (MX:ANET) valued at $2,646,645 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 15,263 shares of Arista Networks, Inc.. This represents a change in shares of 41.23% 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)
2026-04-14 2026-03-31 13F ARISTA NETWORKS COMMON STK 040413205 21,556 6,293 41.23 2,647 32.37 0.1956
2026-01-29 2025-12-31 13F ARISTANETWORKSINC COMMONSTK 040413205 15,263 14,398 1,664.51 2,000 1,486.51 0.1499
2025-11-14 2025-09-30 13F ARISTA NETWORKS COMMON STK 040413205 865 -44 -4.84 126 0.0097
2025-07-08 2025-06-30 13F ARISTA NETWORKS INC COMMON STK 040413205 909 -176 -16.22 0 0.0075
2025-04-09 2025-03-31 13F ARISTA NETWORKS INC COM SHS Stock 040413205 1,085 1,085 0 0.0072
2025-01-22 2024-12-31 13F ARISTA NETWORKS INC COM Stock 040413106 0 -250 -100.00 0 0.0000
2024-10-15 2024-09-30 13F ARISTA NETWORKS INC COM Stock 040413106 250 18 7.76 0 0.0080
2024-07-10 2024-06-30 13F ARISTA NETWORKS INC COM Stock 040413106 232 17 7.91 0 0.0074
2024-04-05 2024-03-31 13F ARISTA NETWORKS INC COM Stock 040413106 215 38 21.47 0 0.0058
2024-02-07 2023-12-31 13F ARISTA NETWORKS INC COM Stock 040413106 177 -4 -2.21 0 0.0041
2023-11-03 2023-09-30 13F ARISTA NETWORKS INC COM Stock 040413106 181 181 0 0.0036
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.