Arista Networks, Inc.
MX ˙ BMV ˙ US0404132054
SecurityMX:ANET / Arista Networks, Inc.
InstitutionCapital Fund Management S.a.
Latest Disclosed Ownership96,026 shares
Latest Disclosed Value $ 11,790,072
Capital Fund Management S.a. ownership in ANET / Arista Networks, Inc.

On May 14, 2026 - Capital Fund Management S.a. filed a 13F-HR form disclosing ownership of 96,026 shares of Arista Networks, Inc. (MX:ANET) valued at $11,790,072 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 148,985 shares of Arista Networks, Inc.. This represents a change in shares of -35.55% during the quarter.

Capital Fund Management S.a. 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 123,100 of underlying shares valued at $15,114,218 USD and put options representing 253,200 of underlying shares valued at $31,087,896 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)
2026-05-14 2026-03-31 13F ARISTA NETWORKS INC COM SHS ARISTA NETWORKS INC COM SHS 040413205 96,026 -52,959 -35.55 11,790 -39.60 0.0533
2026-02-17 2025-12-31 13F ARISTA NETWORKS INC COM SHS ARISTA NETWORKS INC COM SHS 040413205 148,985 -71,874 -32.54 19,522 -39.34 0.0542
2025-11-13 2025-09-30 13F ARISTA NETWORKS COM SHS 040413205 220,859 220,859 32,181 0.0843
2025-08-13 2025-06-30 13F ARISTA NETWORKS COM SHS 040413205 0 -434,300 -100.00 0 -100.00
2025-05-14 2025-03-31 13F ARISTA NETWORKS COM SHS 040413205 434,300 295,950 213.91 33,650 120.06 0.0971
2025-02-13 2024-12-31 13F ARISTA NETWORKS COM SHS 040413205 138,350 125,555 981.28 15,292 211.43 0.0390
2024-11-13 2024-09-30 13F ARISTA NETWORKS COM 040413106 12,795 -105,181 -89.15 4,911 -88.13 0.0134
2024-08-13 2024-06-30 13F ARISTA NETWORKS COM 040413106 117,976 51,682 77.96 41,348 115.10 0.1216
2024-05-15 2024-03-31 13F ARISTA NETWORKS COM 040413106 66,294 -81,629 -55.18 19,224 -44.82 0.0556
2024-02-14 2023-12-31 13F ARISTA NETWORKS COM 040413106 147,923 -140,853 -48.78 34,837 -34.41 0.0936
2023-11-14 2023-09-30 13F ARISTA NETWORKS COM 040413106 288,776 193,608 203.44 53,115 244.40 0.1836
2023-08-14 2023-06-30 13F ARISTA NETWORKS COM 040413106 95,168 69,608 272.33 15,423 259.49 0.0625
2023-05-15 2023-03-31 13F ARISTA NETWORKS COM 040413106 25,560 25,560 4,291 0.0205
2021-05-14 2021-03-31 13F ARISTA NETWORKS COM 040413106 0 -16,784 -100.00 0 -100.00
2021-02-12 2020-12-31 13F ARISTA NETWORKS COM 040413106 16,784 16,784 4,877 0.0460
2020-11-13 2020-09-30 13F ARISTA NETWORKS COM 040413106 0 -32,643 -100.00 0 -100.00
2020-08-13 2020-06-30 13F ARISTA NETWORKS COM 040413106 32,643 32,643 6,856 0.1088
2019-11-13 2019-09-30 13F Arista Networks COM 040413106 0 -16,294 -100.00 0 -100.00
2019-08-12 2019-06-30 13F Arista Networks COM 040413106 16,294 9,403 136.45 4,230 95.20 0.0385
2019-05-13 2019-03-31 13F/A-1 Arista Networks COM 040413106 6,891 6,891 2,167 0.0194
2019-02-13 2018-12-31 13F Arista Networks COM 040413106 0 -37,687 -100.00 0 -100.00
2018-11-14 2018-09-30 13F Arista Networks COM 040413106 37,687 -18,600 -33.04 10,019 -30.87 0.0546
2018-08-14 2018-06-30 13F Arista Networks COM 040413106 56,287 14,200 33.74 14,493 34.88 0.0756
2018-05-15 2018-03-31 13F Arista Networks COM 040413106 42,087 42,087 10,745 0.0645
2018-02-09 2017-12-31 13F Arista Networks COM 040413106 0 -52,621 -100.00 0 -100.00
2017-11-13 2017-09-30 13F Arista Networks COM 040413106 52,621 41,600 377.46 9,977 504.30 0.0717
2017-08-10 2017-06-30 13F Arista Networks COM 040413106 11,021 8,975 438.66 1,651 509.23 0.0133
2017-05-03 2017-03-31 13F Arista Networks COM 040413106 2,046 2,046 271 0.0023
2016-07-27 2016-06-30 13F Arista Networks COM 040413106 0 -71,955 -100.00 0 -100.00
2016-05-02 2016-03-31 13F Arista Networks COM 040413106 71,955 71,955 4,540 0.0441
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
(%)
2026-05-14 2026-03-31 13F ARISTA NETWORKS INC COM SHS ARISTA NETWORKS INC COM SHS Call 123,100 -76.18 15,114 -77.68 n/a n/a n/a
2026-02-17 2025-12-31 13F ARISTA NETWORKS INC COM SHS ARISTA NETWORKS INC COM SHS Call 516,800 14.77 67,716 3.21 n/a n/a n/a
2025-11-13 2025-09-30 13F ARISTA NETWORKS COM SHS Call 450,300 -25.89 65,613 5.55 n/a n/a n/a
2025-08-13 2025-06-30 13F ARISTA NETWORKS COM SHS Call 607,600 21.25 62,164 60.11 n/a n/a n/a
2025-05-14 2025-03-31 13F ARISTA NETWORKS COM SHS Call 501,100 -9.27 38,825 -36.40 n/a n/a n/a
2025-02-13 2024-12-31 13F ARISTA NETWORKS COM SHS Call 552,300 517.09 61,046 77.71 n/a n/a n/a
2024-11-13 2024-09-30 13F ARISTA NETWORKS COM Call 89,500 138.03 34,352 160.67 n/a n/a n/a
2024-08-13 2024-06-30 13F ARISTA NETWORKS COM Call 37,600 25.33 13,178 51.49 n/a n/a n/a
2024-05-15 2024-03-31 13F ARISTA NETWORKS COM Call 30,000 71.43 8,699 111.09 n/a n/a n/a
2024-02-14 2023-12-31 13F ARISTA NETWORKS COM Call 17,500 4,121 n/a n/a n/a
2023-11-14 2023-09-30 13F ARISTA NETWORKS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2023-08-14 2023-06-30 13F ARISTA NETWORKS COM Call 51,300 -53.83 8,314 -55.42 n/a n/a n/a
2023-05-15 2023-03-31 13F ARISTA NETWORKS COM Call 111,100 28.00 18,649 77.05 n/a n/a n/a
2023-02-13 2022-12-31 13F ARISTA NETWORKS COM Call 86,800 292.76 10,533 322.33 n/a n/a n/a
2022-11-14 2022-09-30 13F ARISTA NETWORKS COM Call 22,100 78.23 2,495 114.63 n/a n/a n/a
2022-08-12 2022-06-30 13F ARISTA NETWORKS COM Call 12,400 8.77 1,162 -26.64 n/a n/a n/a
2022-05-12 2022-03-31 13F ARISTA NETWORKS COM Call 11,400 1,584 n/a n/a n/a
2020-08-13 2020-06-30 13F Arista Networks COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2020-05-13 2020-03-31 13F Arista Networks COM Call 6,400 -57.89 1,296 -58.09 n/a n/a n/a
2020-02-13 2019-12-31 13F Arista Networks COM Call 15,200 -30.59 3,092 -40.90 n/a n/a n/a
2019-11-13 2019-09-30 13F Arista Networks COM Call 21,900 -30.48 5,232 -36.02 n/a n/a n/a
2019-08-12 2019-06-30 13F Arista Networks COM Call 31,500 14.13 8,178 -5.77 n/a n/a n/a
2019-05-13 2019-03-31 13F/A Arista Networks COM Call 27,600 8,679 n/a n/a n/a
2018-08-14 2018-06-30 13F Arista Networks COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2018-05-15 2018-03-31 13F Arista Networks COM Call 13,900 -49.27 3,549 -45.02 n/a n/a n/a
2018-02-09 2017-12-31 13F Arista Networks COM Call 27,400 204.44 6,455 278.37 n/a n/a n/a
2017-11-13 2017-09-30 13F Arista Networks COM Call 9,000 2.27 1,706 29.44 n/a n/a n/a
2017-08-10 2017-06-30 13F Arista Networks COM Call 8,800 -54.64 1,318 -48.64 n/a n/a n/a
2017-05-03 2017-03-31 13F Arista Networks COM Call 19,400 2,566 n/a n/a n/a
2016-05-02 2016-03-31 13F Arista Networks COM Call 0 0 n/a n/a n/a
2016-01-28 2015-12-31 13F Arista Networks COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2015-10-27 2015-09-30 13F Arista Networks COM Call 8,400 514 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
(%)
2026-05-14 2026-03-31 13F ARISTA NETWORKS INC COM SHS ARISTA NETWORKS INC COM SHS Put 253,200 -29.16 31,088 -33.62 n/a n/a n/a
2026-02-17 2025-12-31 13F ARISTA NETWORKS INC COM SHS ARISTA NETWORKS INC COM SHS Put 357,400 41.10 46,830 26.88 n/a n/a n/a
2025-11-13 2025-09-30 13F ARISTA NETWORKS COM SHS Put 253,300 -22.73 36,908 10.05 n/a n/a n/a
2025-08-13 2025-06-30 13F ARISTA NETWORKS COM SHS Put 327,800 233.81 33,537 340.81 n/a n/a n/a
2025-05-14 2025-03-31 13F ARISTA NETWORKS COM SHS Put 98,200 -76.34 7,609 -83.41 n/a n/a n/a
2025-02-13 2024-12-31 13F ARISTA NETWORKS COM SHS Put 415,000 491.17 45,870 70.24 n/a n/a n/a
2024-11-13 2024-09-30 13F ARISTA NETWORKS COM Put 70,200 54.97 26,944 69.72 n/a n/a n/a
2024-08-13 2024-06-30 13F ARISTA NETWORKS COM Put 45,300 -37.95 15,877 -25.00 n/a n/a n/a
2024-05-15 2024-03-31 13F ARISTA NETWORKS COM Put 73,000 101.66 21,169 148.30 n/a n/a n/a
2024-02-14 2023-12-31 13F ARISTA NETWORKS COM Put 36,200 78.33 8,525 128.37 n/a n/a n/a
2023-11-14 2023-09-30 13F ARISTA NETWORKS COM Put 20,300 -55.09 3,734 -49.04 n/a n/a n/a
2023-08-14 2023-06-30 13F ARISTA NETWORKS COM Put 45,200 -68.19 7,325 -69.29 n/a n/a n/a
2023-05-15 2023-03-31 13F ARISTA NETWORKS COM Put 142,100 66.39 23,853 130.17 n/a n/a n/a
2023-02-13 2022-12-31 13F ARISTA NETWORKS COM Put 85,400 161.16 10,363 180.76 n/a n/a n/a
2022-11-14 2022-09-30 13F ARISTA NETWORKS COM Put 32,700 177.12 3,692 233.73 n/a n/a n/a
2022-08-12 2022-06-30 13F ARISTA NETWORKS COM Put 11,800 1,106 n/a n/a n/a
2020-08-13 2020-06-30 13F Arista Networks COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2020-05-13 2020-03-31 13F Arista Networks COM Put 2,100 -93.97 425 -94.00 n/a n/a n/a
2020-02-13 2019-12-31 13F Arista Networks COM Put 34,800 -10.77 7,078 -24.04 n/a n/a n/a
2019-11-13 2019-09-30 13F Arista Networks COM Put 39,000 8.94 9,318 0.26 n/a n/a n/a
2019-08-12 2019-06-30 13F Arista Networks COM Put 35,800 40.39 9,294 15.90 n/a n/a n/a
2019-05-13 2019-03-31 13F/A Arista Networks COM Put 25,500 8,019 n/a n/a n/a
2019-02-13 2018-12-31 13F Arista Networks COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2018-11-14 2018-09-30 13F Arista Networks COM Put 3,700 984 n/a n/a n/a
2018-08-14 2018-06-30 13F Arista Networks COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2018-05-15 2018-03-31 13F Arista Networks COM Put 12,300 -52.51 3,140 -48.54 n/a n/a n/a
2018-02-09 2017-12-31 13F Arista Networks COM Put 25,900 979.17 6,102 1,241.10 n/a n/a n/a
2017-11-13 2017-09-30 13F Arista Networks COM Put 2,400 -59.32 455 -48.53 n/a n/a n/a
2017-08-10 2017-06-30 13F Arista Networks COM Put 5,900 -70.05 884 -66.08 n/a n/a n/a
2017-05-03 2017-03-31 13F Arista Networks COM Put 19,700 2,606 n/a n/a n/a
2016-05-02 2016-03-31 13F Arista Networks COM Put 0 0 n/a n/a n/a
2016-01-28 2015-12-31 13F Arista Networks COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2015-10-27 2015-09-30 13F Arista Networks COM Put 3,300 202 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.