Arista Networks, Inc.
MX ˙ BMV ˙ US0404132054
SecurityMX:ANET / Arista Networks, Inc.
InstitutionPrincipal Financial Group Inc
Latest Disclosed Ownership1,526,134 shares
Latest Disclosed Value $ 187,378,733
Principal Financial Group Inc reports 3.69% increase in ownership of ANET / Arista Networks, Inc.

On May 4, 2026 - Principal Financial Group Inc filed a 13F-HR form disclosing ownership of 1,526,134 shares of Arista Networks, Inc. (MX:ANET) valued at $187,378,733 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 1,471,872 shares of Arista Networks, Inc.. This represents a change in shares of 3.69% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-04 2026-03-31 13F ARISTA NETWORKS COM SHS 040413205 1,526,134 54,262 3.69 187,379 -2.84 0.0511
2026-02-02 2025-12-31 13F ARISTA NETWORKS COM SHS 040413205 1,471,872 -193,479 -11.62 192,859 -20.52 0.0985
2025-11-04 2025-09-30 13F ARISTA NETWORKS COM SHS 040413205 1,665,351 -79,802 -4.57 242,658 35.91 0.1224
2025-08-08 2025-06-30 13F ARISTA NETWORKS COM SHS 040413205 1,745,153 195,840 12.64 178,547 48.74 0.0944
2025-04-28 2025-03-31 13F ARISTA NETWORKS COM SHS 040413205 1,549,313 189,932 13.97 120,041 -20.11 0.0674
2025-01-31 2024-12-31 13F ARISTA NETWORKS COM SHS 040413205 1,359,381 1,019,825 300.34 150,252 15.29 0.0819
2024-10-31 2024-09-30 13F ARISTA NETWORKS COM 040413106 339,556 29,006 9.34 130,328 19.74 0.0718
2024-07-29 2024-06-30 13F ARISTA NETWORKS COM 040413106 310,550 810 0.26 108,842 21.18 0.0646
2024-04-29 2024-03-31 13F ARISTA NETWORKS COM 040413106 309,740 -2,662 -0.85 89,818 22.08 0.0528
2024-02-07 2023-12-31 13F ARISTA NETWORKS COM 040413106 312,402 -2,639 -0.84 73,574 26.97 0.0469
2023-11-02 2023-09-30 13F ARISTA NETWORKS COM 040413106 315,041 -2,047 -0.65 57,945 12.76 0.0416
2023-08-07 2023-06-30 13F ARISTA NETWORKS COM 040413106 317,088 -6,698 -2.07 51,387 -5.45 0.0351
2023-05-09 2023-03-31 13F ARISTA NETWORKS COM 040413106 323,786 -76,126 -19.04 54,351 11.99 0.0389
2023-02-09 2022-12-31 13F ARISTA NETWORKS COM 040413106 399,912 71,733 21.86 48,529 30.99 0.0365
2022-11-09 2022-09-30 13F ARISTA NETWORKS COM 040413106 328,179 -64,721 -16.47 37,048 0.59 0.0294
2022-08-10 2022-06-30 13F ARISTA NETWORKS COM 040413106 392,900 345,396 727.09 36,831 457.88 0.0273
2022-05-09 2022-03-31 13F ARISTA NETWORKS COM 040413106 47,504 -444,585 -90.35 6,602 -90.67 0.0026
2022-05-09 2022-03-31 13F ARISTA NETWORKS COM 040413106 476,786 66,264
2022-02-09 2021-12-31 13F ARISTA NETWORKS COM 040413106 492,089 337,722 218.78 70,737 33.35 0.0422
2021-11-09 2021-09-30 13F ARISTA NETWORKS COM 040413106 154,367 -22,903 -12.92 53,046 -17.41 0.0346
2021-08-10 2021-06-30 13F ARISTA NETWORKS COM 040413106 177,270 -5,204 -2.85 64,226 16.59 0.0415
2021-05-10 2021-03-31 13F ARISTA NETWORKS COM 040413106 182,474 107,595 143.69 55,087 153.18 0.0389
2021-02-23 2020-12-31 13F/A-1 ARISTA NETWORKS COM 040413106 74,879 -5,319 -6.63 21,758 31.11 0.0161
2021-02-08 2020-12-31 13F ARISTA NETWORKS COM 040413106 74,879 -5,319 21,758 8,559.9325
2020-11-06 2020-09-30 13F ARISTA NETWORKS COM 040413106 80,198 -3,735 -4.45 16,595 -5.86 0.0140
2020-08-05 2020-06-30 13F ARISTA NETWORKS COM 040413106 83,933 3,745 4.67 17,628 8.53 0.0156
2020-05-12 2020-03-31 13F ARISTA NETWORKS COM 040413106 80,188 -32,836 -29.05 16,243 -29.34 0.0180
2020-02-05 2019-12-31 13F ARISTA NETWORKS COM 040413106 113,024 9,477 9.15 22,989 -7.07 0.0192
2019-11-13 2019-09-30 13F ARISTA NETWORKS COM 040413106 103,547 -6,722 -6.10 24,739 -13.58 0.0218
2019-08-12 2019-06-30 13F ARISTA NETWORKS COM 040413106 110,269 -8,457 -7.12 28,628 -23.32 0.0257
2019-05-10 2019-03-31 13F ARISTA NETWORKS COM 040413106 118,726 -14,806 -11.09 37,335 32.70 0.0348
2019-02-14 2018-12-31 13F ARISTA NETWORKS COM 040413106 133,532 6,121 4.80 28,135 -16.94 0.0300
2018-11-14 2018-09-30 13F ARISTA NETWORKS COM 040413106 127,411 117,632 1,202.90 33,873 1,245.23 0.0299
2018-08-13 2018-06-30 13F ARISTA NETWORKS COM 040413106 9,779 1,577 19.23 2,518 20.25 0.0023
2018-05-14 2018-03-31 13F ARISTA NETWORKS COM 040413106 8,202 361 4.60 2,094 13.37 0.0020
2018-02-12 2017-12-31 13F ARISTA NETWORKS COM 040413106 7,841 678 9.47 1,847 36.01 0.0017
2017-11-02 2017-09-30 13F ARISTA NETWORKS COM 040413106 7,163 -1,866 -20.67 1,358 0.44 0.0013
2017-08-08 2017-06-30 13F ARISTA NETWORKS COM 040413106 9,029 1,084 13.64 1,352 28.64 0.0014
2017-05-11 2017-03-31 13F ARISTA NETWORKS COM 040413106 7,945 -445 -5.30 1,051 29.43 0.0013
2017-02-13 2016-12-31 13F ARISTA NETWORKS COM 040413106 8,390 -1,450 -14.74 812 -2.99 0.0010
2016-11-10 2016-09-30 13F ARISTA NETWORKS COM 040413106 9,840 413 4.38 837 37.89 0.0011
2016-08-09 2016-06-30 13F ARISTA NETWORKS COM 040413106 9,427 1,890 25.08 607 27.52 0.0008
2016-05-10 2016-03-31 13F ARISTA NETWORKS COM 040413106 7,537 376 5.25 476 -14.54 0.0007
2016-02-09 2015-12-31 13F ARISTA NETWORKS COM 040413106 7,161 -112 -1.54 557 25.17 0.0008
2015-11-12 2015-09-30 13F/A-1 ARISTA NETWORKS COM 040413106 7,273 2,194 43.20 445 7.23 0.0007
2015-11-09 2015-09-30 13F ARISTA NETWORKS COM 040413106 7,273 445
2015-08-10 2015-06-30 13F ARISTA NETWORKS COM 040413106 5,079 5,079 415 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.