Arista Networks, Inc.
MX ˙ BMV ˙ US0404132054
SecurityMX:ANET / Arista Networks, Inc.
InstitutionStephens Inc /ar/
Latest Disclosed Ownership12,728 shares
Latest Disclosed Value $ 1,562,744
Stephens Inc /ar/ reports 15.76% increase in ownership of ANET / Arista Networks, Inc.

On April 28, 2026 - Stephens Inc /ar/ filed a 13F-HR form disclosing ownership of 12,728 shares of Arista Networks, Inc. (MX:ANET) valued at $1,562,744 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 10,995 shares of Arista Networks, Inc.. This represents a change in shares of 15.76% 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)
2026-04-28 2026-03-31 13F ARISTA NETWORKS COM SHS 040413205 12,728 1,733 15.76 1,563 8.47 0.0195
2026-02-05 2025-12-31 13F ARISTA NETWORKS COM SHS 040413205 10,995 1,157 11.76 1,441 0.49 0.0179
2025-10-27 2025-09-30 13F ARISTA NETWORKS COM SHS 040413205 9,838 -4,107 -29.45 1,433 0.49 0.0183
2025-07-29 2025-06-30 13F ARISTA NETWORKS COM SHS 040413205 13,945 1,687 13.76 1,427 50.26 0.0196
2025-05-01 2025-03-31 13F ARISTA NETWORKS COM SHS 040413205 12,258 755 6.56 950 -25.33 0.0139
2025-01-28 2024-12-31 13F ARISTA NETWORKS COM SHS 040413205 11,503 8,752 318.14 1,271 20.47 0.0178
2024-10-28 2024-09-30 13F ARISTA NETWORKS COM 040413106 2,751 124 4.72 1,056 14.67 0.0150
2024-08-06 2024-06-30 13F ARISTA NETWORKS COM 040413106 2,627 -945 -26.46 921 -11.11 0.0140
2024-05-15 2024-03-31 13F ARISTA NETWORKS COM 040413106 3,572 1,603 81.41 1,036 123.54 0.0161
2024-02-13 2023-12-31 13F ARISTA NETWORKS COM 040413106 1,969 66 3.47 464 32.29 0.0080
2023-11-14 2023-09-30 13F ARISTA NETWORKS COM 040413106 1,903 117 6.55 350 21.11 0.0067
2023-08-14 2023-06-30 13F ARISTA NETWORKS COM 040413106 1,786 221 14.12 289 10.31 0.0052
2023-05-15 2023-03-31 13F ARISTA NETWORKS COM 040413106 1,565 -570 -26.70 263 1.16 0.0050
2023-02-14 2022-12-31 13F/A-1 ARISTA NETWORKS COM 040413106 2,135 -25 -1.16 259 6.15 0.0053
2023-01-25 2022-12-31 13F ARISTA NETWORKS OM 040413106 2,135 -25 0 0.0053
2022-11-02 2022-09-30 13F ARISTA NETWORKS OM 040413106 2,160 -255 -10.56 244 7.96 0.0052
2022-08-03 2022-06-30 13F ARISTA NETWORKS OM 040413106 2,415 27 1.13 226 -31.93 0.0046
2022-05-04 2022-03-31 13F ARISTA NETWORKS OM 040413106 2,388 -116 -4.63 332 -7.78 0.0054
2022-03-07 2021-12-31 13F ARISTA NETWORKS OM 040413106 2,504 1,672 200.96 360 25.87 0.0054
2021-10-27 2021-09-30 13F ARISTA NETWORKS COM 040413106 832 -833 -50.03 286 -52.57 0.0044
2021-08-12 2021-06-30 13F ARISTA NETWORKS COM 040413106 1,665 -381 -18.62 603 -2.43 0.0090
2021-05-14 2021-03-31 13F ARISTA NETWORKS COM 040413106 2,046 118 6.12 618 10.36 0.0101
2021-02-10 2020-12-31 13F ARISTA NETWORKS COM 040413106 1,928 228 13.41 560 59.09 0.0100
2020-11-13 2020-09-30 13F ARISTA NETWORKS COM 040413106 1,700 -59 -3.35 352 -4.61 0.0069
2020-08-24 2020-06-30 13F ARISTA NETWORKS COM 040413106 1,759 -184 -9.47 369 -6.35 0.0079
2020-05-14 2020-03-31 13F ARISTA NETWORKS COM 040413106 1,943 130 7.17 394 6.78 0.0105
2020-02-14 2019-12-31 13F ARISTA NETWORKS COM 040413106 1,813 31 1.74 369 -13.38 0.0077
2019-10-18 2019-09-30 13F ARISTA NETWORKS COM 040413106 1,782 419 30.74 426 20.34 0.0094
2019-08-01 2019-06-30 13F ARISTA NETWORKS COM 040413106 1,363 249 22.35 354 1.14 0.0080
2019-05-03 2019-03-31 13F ARISTA NETWORKS COM 040413106 1,114 -270 -19.51 350 19.86 0.0083
2019-02-11 2018-12-31 13F ARISTA NETWORKS COM 040413106 1,384 434 45.68 292 15.42 0.0083
2018-11-14 2018-09-30 13F ARISTA NETWORKS COM 040413106 950 950 253 0.0063
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.