A10 Networks, Inc.
US ˙ NYSE ˙ US0021211018

SecurityATEN / A10 Networks, Inc.
InstitutionSquarepoint Ops LLC
Latest Disclosed Ownership45,864 shares
Latest Disclosed Value $ 1,060,376
Squarepoint Ops LLC ownership in ATEN / A10 Networks, Inc.

On May 15, 2026 - Squarepoint Ops LLC filed a 13F-HR form disclosing ownership of 45,864 shares of A10 Networks, Inc. (US:ATEN) valued at $1,060,376 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 0 shares of A10 Networks, Inc.. The current value of the position is $1,441,964 USD.

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 A10 NETWORKS COM 002121101 45,864 45,864 1,060 0.0012
2026-02-13 2025-12-31 13F A10 NETWORKS COM 002121101 0 -19,981 -100.00 0 -100.00
2025-11-14 2025-09-30 13F A10 NETWORKS COM 002121101 19,981 7,577 61.09 363 50.83 0.0004
2025-08-27 2025-06-30 13F/A-1 A10 NETWORKS COM 002121101 12,404 -12,343 -49.88 240 -40.59 0.0002
2025-08-14 2025-06-30 13F A10 NETWORKS COM 002121101 12,404 -12,343 240 0.0002
2025-08-27 2025-03-31 13F/A-1 A10 NETWORKS COM 002121101 24,747 -95,130 -79.36 404 -81.68 0.0005
2025-05-15 2025-03-31 13F A10 NETWORKS COM 002121101 24,747 -95,130 404 0.0005
2025-02-14 2024-12-31 13F A10 NETWORKS COM 002121101 119,877 94,032 363.83 2,206 491.15 0.0022
2024-11-14 2024-09-30 13F A10 NETWORKS COM 002121101 25,845 5,616 27.76 373 33.21 0.0006
2024-08-14 2024-06-30 13F A10 NETWORKS COM 002121101 20,229 20,229 280 0.0005
2023-08-14 2023-06-30 13F A10 NETWORKS COM 002121101 0 -220,631 -100.00 0 -100.00
2023-05-15 2023-03-31 13F A10 NETWORKS COM 002121101 220,631 95,671 76.56 3,418 64.44 0.0139
2023-02-14 2022-12-31 13F A10 NETWORKS COM 002121101 124,960 124,960 2,078 0.0082
2022-08-15 2022-06-30 13F A10 NETWORKS COM 002121101 0 -106,360 -100.00 0 -100.00
2022-05-16 2022-03-31 13F A10 NETWORKS COM 002121101 106,360 30,481 40.17 1,484 17.97 0.0063
2022-02-14 2021-12-31 13F A10 NETWORKS COM 002121101 75,879 75,879 1,258 0.0033
2021-05-17 2021-03-31 13F A10 NETWORKS COM 002121101 0 -150,328 -100.00 0 -100.00
2021-02-16 2020-12-31 13F A10 NETWORKS COM 002121101 150,328 -79,118 -34.48 1,482 1.37 0.0111
2020-11-16 2020-09-30 13F A10 NETWORKS COM 002121101 229,446 143,809 167.93 1,462 150.77 0.0197
2020-08-14 2020-06-30 13F A10 NETWORKS COM 002121101 85,637 28,737 50.50 583 65.16 0.0094
2020-05-15 2020-03-31 13F A10 NETWORKS COM 002121101 56,900 -47,218 -45.35 353 -50.63 0.0090
2020-02-14 2019-12-31 13F A10 NETWORKS COM 002121101 104,118 10,022 10.65 715 9.49 0.0043
2019-11-14 2019-09-30 13F A10 NETWORKS COM 002121101 94,096 -55,417 -37.07 653 -35.98 0.0058
2019-08-14 2019-06-30 13F A10 NETWORKS COM 002121101 149,513 98,487 193.01 1,020 181.77 0.0099
2019-05-15 2019-03-31 13F A10 NETWORKS COM 002121101 51,026 40,503 384.90 362 448.48 0.0038
2019-02-14 2018-12-31 13F A10 NETWORKS COM 002121101 10,523 -9,696 -47.95 66 -46.34 0.0008
2018-11-14 2018-09-30 13F A10 NETWORKS COM 002121101 20,219 -1,770 -8.05 123 -10.22 0.0015
2018-08-14 2018-06-30 13F A10 NETWORKS COM 002121101 21,989 -2,179 -9.02 137 -2.84 0.0018
2018-05-15 2018-03-31 13F A10 NETWORKS COM 002121101 24,168 -26,424 -52.23 141 -63.94 0.0022
2018-02-14 2017-12-31 13F A10 NETWORKS COM 002121101 50,592 25,778 103.88 391 107.98 0.0068
2017-11-14 2017-09-30 13F A10 NETWORKS COM 002121101 24,814 9,114 58.05 188 41.35 0.0036
2017-08-14 2017-06-30 13F A10 NETWORKS COM 002121101 15,700 5,200 49.52 133 38.54 0.0026
2017-05-15 2017-03-31 13F A10 NETWORKS COM 002121101 10,500 -25,166 -70.56 96 -67.57 0.0026
2017-02-14 2016-12-31 13F A10 NETWORKS COM 002121101 35,666 35,666 296 0.0121
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.