Arista Networks, Inc.
MX ˙ BMV ˙ US0404132054
SecurityMX:ANET / Arista Networks, Inc.
InstitutionCandriam Luxembourg S.C.A.
Latest Disclosed Ownership137,440 shares
Latest Disclosed Value $ 16,874,883
Candriam Luxembourg S.C.A. reports 16.54% increase in ownership of ANET / Arista Networks, Inc.

On April 30, 2026 - Candriam Luxembourg S.C.A. filed a 13F-HR form disclosing ownership of 137,440 shares of Arista Networks, Inc. (MX:ANET) valued at $16,874,883 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on April 30, 2026 disclosing 117,935 shares of Arista Networks, Inc.. This represents a change in shares of 16.54% 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)
2026-04-30 2026-03-31 13F ARISTA NETWORKS COM SHS 040413205 137,440 19,505 16.54 16,875 9.20 0.0877
2026-04-30 2025-12-31 13F/A-1 ARISTA NETWORKS COM SHS 040413205 117,935 4,120 3.62 15,454 -6.81 0.0771
2026-02-13 2025-12-31 13F ARISTA NETWORKS COM SHS 040413205 117,935 4,120 15,454 0.0770
2025-11-06 2025-09-30 13F ARISTA NETWORKS COM SHS 040413205 113,815 -7,756 -6.38 16,584 33.33 0.0868
2025-08-08 2025-06-30 13F ARISTA NETWORKS COM SHS 040413205 121,571 -40,853 -25.15 12,438 -1.16 0.0717
2025-05-14 2025-03-31 13F ARISTA NETWORKS COM SHS 040413205 162,424 3,881 2.45 12,585 -28.19 0.0788
2025-02-07 2024-12-31 13F ARISTA NETWORKS COM SHS 040413205 158,543 117,033 281.94 17,524 9.99 0.1009
2024-11-13 2024-09-30 13F ARISTA NETWORKS COM 040413106 41,510 3,163 8.25 15,932 18.54 0.0916
2024-08-05 2024-06-30 13F ARISTA NETWORKS COM 040413106 38,347 12,660 49.29 13,439 80.44 0.0815
2024-05-06 2024-03-31 13F ARISTA NETWORKS COM 040413106 25,687 -38,647 -60.07 7,449 -50.84 0.0476
2024-02-14 2023-12-31 13F ARISTA NETWORKS COM 040413106 64,334 1,304 2.07 15,152 30.69 0.1046
2023-11-13 2023-09-30 13F ARISTA NETWORKS COM 040413106 63,030 -89,732 -58.74 11,593 -53.17 0.0822
2023-08-08 2023-06-30 13F ARISTA NETWORKS COM 040413106 152,762 -748 -0.49 24,757 4.38 0.1789
2023-05-12 2023-03-31 13F ARISTA NETWORKS COM 040413106 153,510 118,504 338.52 23,718 458.44 0.1645
2023-02-13 2022-12-31 13F ARISTA NETWORKS COM 040413106 35,006 -4,641 -11.71 4,248 -5.12 0.0287
2022-11-10 2022-09-30 13F ARISTA NETWORKS COM 040413106 39,647 -35,469 -47.22 4,476 -36.43 0.0315
2022-08-03 2022-06-30 13F ARISTA NETWORKS COM 040413106 75,116 3,159 4.39 7,041 -29.59 0.0580
2022-05-13 2022-03-31 13F ARISTA NETWORKS COM 040413106 71,957 61,147 565.65 10,000 543.50 0.0680
2022-02-10 2021-12-31 13F ARISTA NETWORKS COM 040413106 10,810 7,682 245.59 1,554 44.56 0.0099
2021-11-09 2021-09-30 13F ARISTA NETWORKS COM 040413106 3,128 0 0.00 1,075 -5.12 0.0073
2021-07-20 2021-06-30 13F ARISTA NETWORKS COM 040413106 3,128 -5,410 -63.36 1,133 -52.45 0.0078
2021-04-29 2021-03-31 13F ARISTA NETWORKS COM 040413106 8,538 0 0.00 2,383 -3.95 0.0198
2021-01-22 2020-12-31 13F ARISTA NETWORKS COM 040413106 8,538 4,824 129.89 2,481 222.63 0.0196
2020-10-19 2020-09-30 13F ARISTA NETWORKS COM 040413106 3,714 -103,338 -96.53 769 -96.58 0.0072
2020-07-23 2020-06-30 13F ARISTA NETWORKS COM 040413106 107,052 58,379 119.94 22,485 132.33 0.2373
2020-05-26 2020-03-31 13F ARISTA NETWORKS COM 040413106 48,673 0 0.00 9,678 -2.24 0.1073
2020-02-05 2019-12-31 13F/A-1 ARISTA NETWORKS COM 040413106 48,673 -4,653 -8.73 9,900 -22.30 0.1061
2020-01-21 2019-12-31 13F ARISTA NETWORKS COM 040413106 48,673 -4,653 10 107,250.1073
2020-02-05 2019-09-30 13F/A-1 ARISTA NETWORKS COM 040413106 53,326 10,006 23.10 12,741 13.79 0.1688
2019-10-21 2019-09-30 13F ARISTA NETWORKS COM 040413106 53,326 10,006 13 163,378.1576
2019-08-01 2019-06-30 13F ARISTA NETWORKS COM 040413106 43,320 -191 -0.44 11,197 -18.17 0.1397
2019-05-02 2019-03-31 13F ARISTA NETWORKS COM 040413106 43,511 -41,060 -48.55 13,683 -23.21 0.1750
2019-02-14 2018-12-31 13F ARISTA NETWORKS COM 040413106 84,571 -8,475 -9.11 17,818 -27.97 0.2738
2018-11-07 2018-09-30 13F ARISTA NETWORKS COM 040413106 93,046 5,870 6.73 24,737 10.20 0.3289
2018-08-14 2018-06-30 13F ARISTA NETWORKS COM 040413106 87,176 9,863 12.76 22,448 13.72 0.3552
2018-05-09 2018-03-31 13F ARISTA NETWORKS COM 040413106 77,313 41,904 118.34 19,739 136.62 0.3367
2018-02-07 2017-12-31 13F ARISTA NETWORKS COM 040413106 35,409 14,224 67.14 8,342 107.67 0.1443
2017-11-03 2017-09-30 13F ARISTA NETWORKS COM 040413106 21,185 -108 -0.51 4,017 25.92 0.0702
2017-07-31 2017-06-30 13F ARISTA NETWORKS COM 040413106 21,293 1,237 6.17 3,190 20.24 0.0599
2017-04-21 2017-03-31 13F ARISTA NETWORKS COM 040413106 20,056 6,411 46.98 2,653 100.98 0.0514
2017-02-01 2016-12-31 13F ARISTA NETWORKS COM 040413106 13,645 13,645 0.00 1,320 0.0303
2016-07-26 2016-06-30 13F ARISTA NETWORKS COM 040413106 0 -8,200 -100.00 0 -100.00
2016-04-27 2016-03-31 13F ARISTA NETWORKS COM 040413106 8,200 8,200 0.00 515 0.0129
2016-01-25 2015-12-31 13F ARISTA NETWORKS COM 040413106 0 -4,700 -100.00 0 -100.00
2015-10-19 2015-09-30 13F ARISTA NETWORKS COM 040413106 4,700 -1,000 -17.54 288 -38.20 0.0071
2015-07-29 2015-06-30 13F ARISTA NETWORKS COM 040413106 5,700 -1,000 -14.93 466 -1.48 0.0097
2015-05-28 2015-03-31 13F/A-1 ARISTA NETWORKS COM 040413106 6,700 6,700 473 0.0095
2015-04-27 2015-03-31 13F ARISTA NETWORKS COM 040413106 6,700 473
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.