A10 Networks, Inc.
US ˙ NYSE ˙ US0021211018

SecurityATEN / A10 Networks, Inc.
InstitutionCreative Planning
Latest Disclosed Ownership127,268 shares
Latest Disclosed Value $ 2,942,443
Creative Planning ownership in ATEN / A10 Networks, Inc.

On May 12, 2026 - Creative Planning filed a 13F-HR form disclosing ownership of 127,268 shares of A10 Networks, Inc. (US:ATEN) valued at $2,942,436 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 68,949 shares of A10 Networks, Inc.. This represents a change in shares of 84.58% during the quarter. The current value of the position is $4,001,306 USD.

Creative Planning has a history of taking positions in derivatives of the underlying security (ATEN) 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.

ATEN / A10 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)
2026-05-12 2026-03-31 13F A10 NETWORKS COM 002121101 127,268 58,319 84.58 2,942 141.35 0.0020
2026-02-17 2025-12-31 13F A10 NETWORKS COM 002121101 68,949 24,185 54.03 1,220 50.12 0.0009
2025-11-14 2025-09-30 13F A10 NETWORKS COM 002121101 44,764 23,246 108.03 812 95.19 0.0006
2025-08-08 2025-06-30 13F A10 NETWORKS COM 002121101 21,518 5,696 36.00 416 61.24 0.0004
2025-05-15 2025-03-31 13F A10 NETWORKS COM 002121101 15,822 3,961 33.40 259 18.35 0.0002
2025-02-14 2024-12-31 13F A10 NETWORKS COM 002121101 11,861 1,347 12.81 218 44.37 0.0002
2024-10-11 2024-09-30 13F A10 NETWORKS COM 002121101 10,514 -2,017 -16.10 152 -12.72 0.0002
2024-08-15 2024-06-30 13F A10 NETWORKS COM 002121101 12,531 1,967 18.62 174 20.14 0.0002
2024-05-13 2024-03-31 13F A10 NETWORKS COM 002121101 10,564 10,564 145 0.0002
2021-04-30 2021-03-31 13F A10 NETWORKS COM 002121101 0 -823 -100.00 0 -100.00
2021-01-29 2020-12-31 13F A10 NETWORKS COM 002121101 823 823 8 0.0000
2017-10-17 2017-09-30 13F A10 NETWORKS COM 002121101 0 -200 -100.00 0 -100.00
2017-07-12 2017-06-30 13F A10 NETWORKS COM 002121101 200 200 2 0.0000
2016-07-12 2016-06-30 13F A10 NETWORKS COM 002121101 0 -200 -100.00 0 -100.00
2016-04-08 2016-03-31 13F A10 NETWORKS COM 002121101 200 200 0.00 1 0.0000
2016-01-11 2015-12-31 13F A10 NETWORKS COM 002121101 0 0 0 0.0000
2014-10-10 2014-09-30 13F A10 NETWORKS COM 002121101 0 -1,000 -100.00 0 -100.00
2014-08-20 2014-06-30 13F A10 NETWORKS COM 002121101 1,000 1,000 13 0.0002
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
(%)
2021-04-30 2021-03-31 13F A10 NETWORKS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-01-29 2020-12-31 13F A10 NETWORKS COM Call 10,000 5 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.