Arista Networks, Inc.
MX ˙ BMV ˙ US0404132054
SecurityMX:ANET / Arista Networks, Inc.
InstitutionGuggenheim Capital Llc
Latest Disclosed Ownership196,749 shares
Latest Disclosed Value $ 24,156,842
Guggenheim Capital Llc reports 21.38% increase in ownership of ANET / Arista Networks, Inc.

On May 15, 2026 - Guggenheim Capital Llc filed a 13F-HR form disclosing ownership of 196,749 shares of Arista Networks, Inc. (MX:ANET) valued at $24,156,842 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 162,092 shares of Arista Networks, Inc.. This represents a change in shares of 21.38% 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)
2026-05-15 2026-03-31 13F ARISTA NETWORKS COM SHS 040413205 196,749 34,657 21.38 24,157 13.74 0.0933
2026-02-17 2025-12-31 13F ARISTA NETWORKS COM SHS 040413205 162,092 -8,636 -5.06 21,239 -14.62 0.1521
2025-11-13 2025-09-30 13F ARISTA NETWORKS COM SHS 040413205 170,728 12,359 7.80 24,877 53.54 0.1805
2025-08-13 2025-06-30 13F ARISTA NETWORKS COM SHS 040413205 158,369 22,949 16.95 16,203 54.42 0.1286
2025-05-14 2025-03-31 13F ARISTA NETWORKS COM SHS 040413205 135,420 -18,665 -12.11 10,492 -38.39 0.0964
2025-02-13 2024-12-31 13F ARISTA NETWORKS COM SHS 040413205 154,085 110,056 249.96 17,031 0.78 0.1381
2024-11-13 2024-09-30 13F ARISTA NETWORKS COM 040413106 44,029 1,167 2.72 16,899 12.50 0.1183
2024-08-14 2024-06-30 13F ARISTA NETWORKS COM 040413106 42,862 12,549 41.40 15,022 70.90 0.1065
2024-05-14 2024-03-31 13F ARISTA NETWORKS COM 040413106 30,313 -4,383 -12.63 8,790 7.58 0.0619
2024-02-14 2023-12-31 13F ARISTA NETWORKS COM 040413106 34,696 10,046 40.75 8,171 80.26 0.0617
2023-11-14 2023-09-30 13F ARISTA NETWORKS COM 040413106 24,650 -6,957 -22.01 4,534 -11.50 0.0390
2023-08-11 2023-06-30 13F ARISTA NETWORKS COM 040413106 31,607 -2,816 -8.18 5,122 -11.35 0.0402
2023-05-11 2023-03-31 13F ARISTA NETWORKS COM 040413106 34,423 9,707 39.27 5,778 92.66 0.0486
2023-02-14 2022-12-31 13F ARISTA NETWORKS COM 040413106 24,716 -6,384 -20.53 2,999 -14.58 0.0263
2022-11-14 2022-09-30 13F ARISTA NETWORKS COM 040413106 31,100 -8,651 -21.76 3,511 -5.77 0.0322
2022-08-15 2022-06-30 13F ARISTA NETWORKS COM 040413106 39,751 -48,404 -54.91 3,726 -69.59 0.0294
2022-05-16 2022-03-31 13F ARISTA NETWORKS COM 040413106 88,155 17,836 25.36 12,252 21.20 0.0737
2022-02-14 2021-12-31 13F ARISTA NETWORKS COM 040413106 70,319 47,383 206.59 10,109 28.25 0.0527
2021-11-15 2021-09-30 13F ARISTA NETWORKS COM 040413106 22,936 5,676 32.89 7,882 26.05 0.0473
2021-08-13 2021-06-30 13F ARISTA NETWORKS COM 040413106 17,260 688 4.15 6,253 24.99 0.0368
2021-05-13 2021-03-31 13F ARISTA NETWORKS COM 040413106 16,572 310 1.91 5,003 5.88 0.0328
2021-02-16 2020-12-31 13F ARISTA NETWORKS COM 040413106 16,262 -4,276 -20.82 4,725 11.15 0.0296
2020-11-13 2020-09-30 13F ARISTA NETWORKS COM 040413106 20,538 5,173 33.67 4,251 31.69 0.0308
2020-08-14 2020-06-30 13F ARISTA NETWORKS COM 040413106 15,365 4,279 38.60 3,228 43.79 0.0250
2020-06-02 2020-03-31 13F ARISTA NETWORKS COM 040413106 11,086 -2,955 -21.05 2,245 -21.39 0.0226
2020-02-20 2019-12-31 13F/A-1 ARISTA NETWORKS COM 040413106 14,041 4,245 43.33 2,856 22.00 0.0214
2020-02-14 2019-12-31 13F ARISTA NETWORKS COM 040413106 14,041 4,245 2,856 16,926.9411
2020-02-20 2019-09-30 13F/A-1 ARISTA NETWORKS COM 040413106 9,796 -10,737 -52.29 2,341 -56.09 0.0187
2019-11-14 2019-09-30 13F ARISTA NETWORKS COM 040413106 9,796 -10,737 2,341 17,155.5347
2019-08-14 2019-06-30 13F ARISTA NETWORKS COM 040413106 20,533 -377 -1.80 5,331 -18.93 0.0434
2019-05-15 2019-03-31 13F ARISTA NETWORKS COM 040413106 20,910 10,162 94.55 6,576 190.33 0.0536
2019-02-14 2018-12-31 13F ARISTA NETWORKS COM 040413106 10,748 -26,647 -71.26 2,265 -77.22 0.0192
2018-11-14 2018-09-30 13F ARISTA NETWORKS COM 040413106 37,395 5,290 16.48 9,942 20.26 0.0648
2018-08-14 2018-06-30 13F ARISTA NETWORKS COM 040413106 32,105 4,374 15.77 8,267 16.78 0.0552
2018-05-15 2018-03-31 13F ARISTA NETWORKS COM 040413106 27,731 -193 -0.69 7,079 7.63 0.0173
2018-02-14 2017-12-31 13F ARISTA NETWORKS COM 040413106 27,924 -2,196 -7.29 6,577 15.14 0.0156
2017-11-14 2017-09-30 13F ARISTA NETWORKS COM 040413106 30,120 -57,141 -65.48 5,712 -56.30 0.0134
2017-08-14 2017-06-30 13F ARISTA NETWORKS COM 040413106 87,261 -5,658 -6.09 13,071 6.35 0.0346
2017-05-15 2017-03-31 13F ARISTA NETWORKS COM 040413106 92,919 -8,224 -8.13 12,291 25.57 0.0333
2017-02-14 2016-12-31 13F ARISTA NETWORKS COM 040413106 101,143 -8,042 -7.37 9,788 5.36 0.0280
2016-11-14 2016-09-30 13F ARISTA NETWORKS COM 040413106 109,185 77,909 249.10 9,290 361.27 0.0289
2016-08-15 2016-06-30 13F ARISTA NETWORKS COM 040413106 31,276 343 1.11 2,014 3.23 0.0063
2016-05-16 2016-03-31 13F ARISTA NETWORKS COM 040413106 30,933 -7,235 -18.96 1,951 -34.33 0.0062
2016-02-16 2015-12-31 13F ARISTA NETWORKS COM 040413106 38,168 24,107 171.45 2,971 245.47 0.0086
2015-11-16 2015-09-30 13F ARISTA NETWORKS COM 040413106 14,061 -2,875 -16.98 860 -37.86 0.0026
2015-08-14 2015-06-30 13F ARISTA NETWORKS COM 040413106 16,936 10,224 152.32 1,384 192.60 0.0034
2015-05-18 2015-03-31 13F/A-1 ARISTA NETWORKS COM 040413106 6,712 -999 -12.96 473 0.85 0.0011
2015-05-15 2015-03-31 13F ARISTA NETWORKS COM 040413106 6,712 473
2015-02-17 2014-12-31 13F ARISTA NETWORKS COM 040413106 7,711 7,711 469 0.0012
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.