Arista Networks, Inc.
MX ˙ BMV ˙ US0404132054
SecurityMX:ANET / Arista Networks, Inc.
InstitutionDnB Asset Management AS
Latest Disclosed Ownership573,822 shares
Latest Disclosed Value $ 70,453,865
DnB Asset Management AS reports 3.84% increase in ownership of ANET / Arista Networks, Inc.

On May 14, 2026 - DnB Asset Management AS filed a 13F-HR form disclosing ownership of 573,822 shares of Arista Networks, Inc. (MX:ANET) valued at $70,453,865 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 552,579 shares of Arista Networks, Inc.. This represents a change in shares of 3.84% 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)
2026-05-14 2026-03-31 13F Arista Networks COM SHS 040413205 573,822 21,243 3.84 70,454 -2.69 0.2512
2026-02-05 2025-12-31 13F Arista Networks COM SHS 040413205 552,579 -9,631 -1.71 72,404 -11.62 0.2526
2025-11-12 2025-09-30 13F Arista Networks COM SHS 040413205 562,210 11,318 2.05 81,920 45.35 0.3063
2025-08-12 2025-06-30 13F Arista Networks COM SHS 040413205 550,892 -71,119 -11.43 56,362 16.95 0.2337
2025-05-15 2025-03-31 13F Arista Networks COM SHS 040413205 622,011 427,982 220.58 48,193 124.72 0.2222
2025-02-12 2024-12-31 13F Arista Networks COM SHS 040413205 194,029 148,377 325.02 21,446 22.39 0.0928
2024-11-12 2024-09-30 13F Arista Networks COM 040413106 45,652 -11,989 -20.80 17,522 -13.27 0.0791
2024-07-05 2024-06-30 13F Arista Networks common 040413106 57,641 -26,311 -31.34 20,202 -17.01 0.0964
2024-04-12 2024-03-31 13F Arista Networks common 040413106 83,952 -9,127 -9.81 24,344 11.05 0.1269
2024-01-04 2023-12-31 13F Arista Networks common 040413106 93,079 -76,033 -44.96 21,921 -29.52 0.1138
2023-10-13 2023-09-30 13F Arista Networks common 040413106 169,112 -120,263 -41.56 31,105 -33.67 0.1858
2023-07-10 2023-06-30 13F/A-1 Arista Networks common 040413106 289,375 247,140 585.15 46,896 561.53 0.2696
2023-07-06 2023-06-30 13F Arista Networks common 040413106 289,375 247,140 46,896 0.2759
2023-04-20 2023-03-31 13F Arista Networks common 040413106 42,235 4,271 11.25 7,090 53.91 0.0449
2023-01-12 2022-12-31 13F Arista Networks common 040413106 37,964 -347 -0.91 4,607 6.52 0.0325
2022-10-11 2022-09-30 13F Arista Networks common 040413106 38,311 -85 -0.22 4,325 20.14 0.0334
2022-07-08 2022-06-30 13F Arista Networks common 040413106 38,396 2,809 7.89 3,599 -27.22 0.0253
2022-04-08 2022-03-31 13F Arista Networks common 040413106 35,587 2,373 7.14 4,946 3.58 0.0294
2022-01-12 2021-12-31 13F Arista Networks common 040413106 33,214 33,214 4,775 0.0280
2021-07-06 2021-06-30 13F Arista Networks common 040413106 0 -10,867 -100.00 0 -100.00
2021-04-15 2021-03-31 13F Arista Networks common 040413106 10,867 10,867 3,281 0.0239
2019-07-08 2019-06-30 13F Arista Networks common 040413106 0 -11,692 -100.00 0 -100.00
2019-04-11 2019-03-31 13F Arista Networks common 040413106 11,692 -1,983 -14.50 3,677 27.59 0.0419
2019-01-15 2018-12-31 13F Arista Networks common 040413106 13,675 7 0.05 2,881 -20.70 0.0374
2018-10-10 2018-09-30 13F Arista Networks common 040413106 13,668 575 4.39 3,634 7.77 0.0408
2018-07-06 2018-06-30 13F Arista Networks common 040413106 13,093 13,093 3,371 0.0398
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.