Arista Networks, Inc.
MX ˙ BMV ˙ US0404132054
SecurityMX:ANET / Arista Networks, Inc.
InstitutionAdvisor Group Holdings, Inc.
Latest Disclosed Ownership589,315 shares
Latest Disclosed Value $ 72,355,542
Advisor Group Holdings, Inc. ownership in ANET / Arista Networks, Inc.

On May 15, 2026 - Advisor Group Holdings, Inc. filed a 13F-HR form disclosing ownership of 589,315 shares of Arista Networks, Inc. (MX:ANET) valued at $72,355,542 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 652,517 shares of Arista Networks, Inc.. This represents a change in shares of -9.69% during the quarter.

Advisor Group Holdings, Inc. has a history of taking positions in derivatives of the underlying security (ANET) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:ANET / Arista Networks, Inc. Historical Put/Call Ratio
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 589,315 -63,202 -9.69 72,356 -15.37 0.0616
2026-02-17 2025-12-31 13F ARISTA NETWORKS COM SHS 040413205 652,517 -23,104 -3.42 85,499 -11.30 0.1249
2025-11-14 2025-09-30 13F ARISTA NETWORKS COM SHS 040413205 675,621 306,775 83.17 96,393 155.44 0.1349
2025-09-04 2025-06-30 13F/A-1 RISTA NETWORKS COM SHS 040413205 368,846 -10,082 -2.66 37,736 28.53 0.0672
2025-08-13 2025-06-30 13F RISTA NETWORKS COM SHS 040413205 301,050 -77,878 32,551 0.0376
2025-05-12 2025-03-31 13F ARISTA NETWORKS COM SHS 040413205 378,928 83,670 28.34 29,358 -5.81 0.0654
2025-06-06 2024-12-31 13F/A-1 ARISTA NETWORKS COM SHS 040413205 295,258 205,824 230.14 31,168 -9.20 0.0700
2025-02-07 2024-12-31 13F ARISTA NETWORKS COM SHS 040413205 78,211 -11,223 7,179 0.0183
2025-02-07 2024-12-31 13F ARISTA NETWORKS COM 040413106 54,010 20,730
2024-11-13 2024-09-30 13F ARISTA NETWORKS COM 040413106 89,434 9,271 11.57 34,326 22.18 0.0774
2024-08-13 2024-06-30 13F ARISTA NETWORKS COM 040413106 80,163 -7,686 -8.75 28,095 10.29 0.0664
2024-05-10 2024-03-31 13F ARISTA NETWORKS COM 040413106 87,849 -48,356 -35.50 25,473 -20.58 0.0569
2024-02-12 2023-12-31 13F ARISTA NETWORKS COM 040413106 136,205 -39,787 -22.61 32,076 -0.91 0.0561
2023-11-13 2023-09-30 13F ARISTA NETWORKS COM 040413106 175,992 69,587 65.40 32,368 87.89 0.0478
2023-08-21 2023-06-30 13F/A-1 ARISTA NETWORKS COM 040413106 106,405 -1,545 -1.43 17,228 -4.83 0.0309
2023-08-10 2023-06-30 13F ARISTA NETWORKS COM 040413106 125,732 17,782 17,209 0.0047
2023-05-12 2023-03-31 13F ARISTA NETWORKS COM 040413106 107,950 13,049 13.75 18,102 57.21 0.0341
2023-02-10 2022-12-31 13F ARISTA NETWORKS COM 040413106 94,901 26,192 38.12 11,515 48.45 0.0233
2022-11-14 2022-09-30 13F ARISTA NETWORKS COM 040413106 68,709 4,014 6.20 7,756 27.94 0.0177
2022-08-10 2022-06-30 13F ARISTA NETWORKS COM 040413106 64,695 -22,028 -25.40 6,062 -48.43 0.0134
2022-05-04 2022-03-31 13F ARISTA NETWORKS COM 040413106 86,723 66 0.08 11,756 -5.59 0.0228
2022-02-03 2021-12-31 13F ARISTA NETWORKS COM 040413106 86,657 70,130 424.34 12,452 118.96 0.0236
2021-11-05 2021-09-30 13F ARISTA NETWORKS COM 040413106 16,527 606 3.81 5,687 -1.46 0.0119
2021-08-02 2021-06-30 13F ARISTA NETWORKS COM 040413106 15,921 525 3.41 5,771 24.03 0.0125
2021-05-13 2021-03-31 13F ARISTA NETWORKS COM 040413106 15,396 -3,991 -20.59 4,653 -17.34 0.0112
2021-02-10 2020-12-31 13F ARISTA NETWORKS COM 040413106 19,387 -1,474 -7.07 5,629 30.39 0.0150
2020-11-12 2020-09-30 13F ARISTA NETWORKS COM 040413106 20,861 -2,184 -9.48 4,317 -10.79 0.0129
2020-08-14 2020-06-30 13F ARISTA NETWORKS COM 040413106 23,045 -146,380 -86.40 4,839 30.19 0.0162
2020-05-18 2020-03-31 13F ARISTA NETWORKS COM 040413106 169,425 169,425 3,717 0.0152
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2025-05-12 2025-03-31 13F ARISTA NETWORKS CALL Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-02-07 2024-12-31 13F ARISTA NETWORKS CALL Call 6 0.00 27 0.00 n/a n/a n/a
2024-11-13 2024-09-30 13F ARISTA NETWORKS CALL Call 6 0.00 27 13.04 n/a n/a n/a
2024-08-13 2024-06-30 13F ARISTA NETWORKS CALL Call 6 500.00 24 53.33 n/a n/a n/a
2024-05-10 2024-03-31 13F ARISTA NETWORKS CALL Call 1 0.00 16 50.00 n/a n/a n/a
2024-02-12 2023-12-31 13F ARISTA NETWORKS INC CALL COM Call 1 0.00 10 66.67 n/a n/a n/a
2023-11-13 2023-09-30 13F ARISTA NETWORKS INC CALL COM Call 1 6 n/a n/a n/a
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.