Arista Networks, Inc.
MX ˙ BMV ˙ US0404132054
SecurityMX:ANET / Arista Networks, Inc.
InstitutionLido Advisors, LLC
Latest Disclosed Ownership184,697 shares
Latest Disclosed Value $ 22,677,321
Lido Advisors, LLC ownership in ANET / Arista Networks, Inc.

On May 13, 2026 - Lido Advisors, LLC filed a 13F-HR form disclosing ownership of 184,697 shares of Arista Networks, Inc. (MX:ANET) valued at $22,677,321 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 227,339 shares of Arista Networks, Inc.. This represents a change in shares of -18.76% during the quarter.

Lido Advisors, LLC 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 800 of underlying shares valued at $98,224 USD and put options representing 500 of underlying shares valued at $61,390 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)
2026-05-13 2026-03-31 13F ARISTA NETWORKS COM SHS 040413205 184,697 -42,642 -18.76 22,677 -29.64 0.0661
2026-02-10 2025-12-31 13F ARISTA NETWORKS COM SHS 040413205 227,339 3,260 1.45 32,231 -1.28 0.0964
2025-11-14 2025-09-30 13F ARISTA NETWORKS COM SHS 040413205 224,079 63,964 39.95 32,651 99.32 0.1023
2025-08-13 2025-06-30 13F ARISTA NETWORKS COM SHS 040413205 160,115 13,451 9.17 16,381 44.16 0.0638
2025-05-15 2025-03-31 13F ARISTA NETWORKS COM SHS 040413205 146,664 33,978 30.15 11,364 -8.77 0.0512
2025-02-14 2024-12-31 13F ARISTA NETWORKS COM SHS 040413205 112,686 80,065 245.44 12,455 -0.52 0.0567
2024-11-14 2024-09-30 13F ARISTA NETWORKS COM 040413106 32,621 22,593 225.30 12,521 256.29 0.0624
2024-08-15 2024-06-30 13F ARISTA NETWORKS COM 040413106 10,028 -29,410 -74.57 3,515 -69.27 0.0196
2024-05-15 2024-03-31 13F ARISTA NETWORKS COM 040413106 39,438 1,768 4.69 11,436 28.91 0.0673
2024-02-14 2023-12-31 13F ARISTA NETWORKS COM 040413106 37,670 30,267 408.85 8,872 551.80 0.0599
2023-11-14 2023-09-30 13F ARISTA NETWORKS COM 040413106 7,403 -3,732 -33.52 1,362 -24.56 0.0104
2023-08-09 2023-06-30 13F ARISTA NETWORKS COM 040413106 11,135 1,889 20.43 1,805 16.24 0.0129
2023-05-15 2023-03-31 13F ARISTA NETWORKS COM 040413106 9,246 227 2.52 1,552 41.86 0.0151
2023-02-14 2022-12-31 13F ARISTA NETWORKS COM 040413106 9,019 3,890 75.84 1,095 88.95 0.0133
2022-11-14 2022-09-30 13F ARISTA NETWORKS COM 040413106 5,129 -197 -3.70 579 16.03 0.0073
2022-08-15 2022-06-30 13F ARISTA NETWORKS COM 040413106 5,326 143 2.76 499 -30.69 0.0066
2022-05-17 2022-03-31 13F ARISTA NETWORKS COM 040413106 5,183 819 18.77 720 14.83 0.0080
2022-02-15 2021-12-31 13F ARISTA NETWORKS COM 040413106 4,364 3,168 264.88 627 52.93 0.0068
2022-02-15 2021-09-30 13F/A-1 ARISTA NETWORKS COM 040413106 1,196 -936 -43.90 410 -46.89 0.0057
2021-11-12 2021-09-30 13F ARISTA NETWORKS COM 040413106 1,196 -936 411 0.0053
2021-08-12 2021-06-30 13F ARISTA NETWORKS COM 040413106 2,132 -11 -0.51 772 19.32 0.0107
2021-05-13 2021-03-31 13F ARISTA NETWORKS COM 040413106 2,143 81 3.93 647 8.01 0.0189
2021-02-08 2020-12-31 13F ARISTA NETWORKS COM 040413106 2,062 -609 -22.80 599 8.32 0.0201
2020-11-12 2020-09-30 13F ARISTA NETWORKS COM 040413106 2,671 2,671 553 0.0237
2019-11-12 2019-09-30 13F ARISTA NETWORKS COM 040413106 0 -793 -100.00 0 -100.00
2019-08-14 2019-06-30 13F ARISTA NETWORKS COM 040413106 793 -745 -48.44 205 -57.56 0.0174
2019-05-10 2019-03-31 13F ARISTA NETWORKS COM 040413106 1,538 1,538 483 0.0432
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
(%)
2026-05-13 2026-03-31 13F ARISTA NETWORKS COM SHS Call 800 0.00 98 -5.77 n/a n/a n/a
2026-02-10 2025-12-31 13F ARISTA NETWORKS COM SHS Call 800 0.00 105 -10.34 n/a n/a n/a
2025-11-14 2025-09-30 13F ARISTA NETWORKS COM SHS Call 800 117 n/a n/a n/a
Disclosed Put 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
(%)
2026-05-13 2026-03-31 13F ARISTA NETWORKS COM SHS Put 500 61 n/a n/a n/a
2025-08-13 2025-06-30 13F ARISTA NETWORKS COM SHS Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-05-15 2025-03-31 13F ARISTA NETWORKS COM SHS Put 800 0.00 62 -30.68 n/a n/a n/a
2025-02-14 2024-12-31 13F ARISTA NETWORKS COM SHS Put 800 300.00 88 15.79 n/a n/a n/a
2024-11-14 2024-09-30 13F ARISTA NETWORKS COM Put 200 0.00 77 8.57 n/a n/a n/a
2024-08-15 2024-06-30 13F ARISTA NETWORKS COM Put 200 70 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.