A10 NETWORKS INC (ATEN)
Institutional ownership reported to the SEC as of Q2 2026, across 31 quarters.
294
Reporting holders
$2.7B
Reported value
100.0%
Of shares outstanding
1.1%
Held as options
+47
Holder change
Institutions report 72,598,743 shares against 72,609,021 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. A figure this high can overstate: where an adviser and a sub-adviser both report the same shares, both are counted.
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $506.9M | 13,568,496 | 0.01% | 8q | +3.7%+$17.9M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $129.3M | 3,462,058 | 0.01% | 2q | +2.2%+$2.8M |
| FIRST TRUST ADVISORS LP | $121.2M | 3,244,739 | 0.07% | 30q | +88.7%+$57.0M |
| STATE STREET CORP | $115.2M | 3,082,631 | 0.00% | 31q | HELD |
| VANGUARD CAPITAL MANAGEMENT LLC | $114.7M | 3,071,071 | 0.00% | 2q | -1.6%-$1.9M |
| Boston Trust Walden Corp | $90.3M | 2,416,808 | 0.69% | 6q | +11.2%+$9.1M |
| WELLINGTON MANAGEMENT GROUP LLP | $73.2M | 1,959,853 | 0.01% | 7q | -5.5%-$4.3M |
| GEODE CAPITAL MANAGEMENT, LLC | $67.8M | 1,813,638 | 0.00% | 31q | +5.6%+$3.6M |
| GOLDMAN SACHS GROUP INC | $66.7M | 1,784,946 | 0.01% | 31q | +50.4%+$22.3M |
| DIMENSIONAL FUND ADVISORS LP | $59.7M | 1,599,129 | 0.01% | 31q | -2.3%-$1.4M |
| RENAISSANCE TECHNOLOGIES LLC | $56.8M | 1,520,287 | 0.08% | 31q | -14.8%-$9.9M |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $53.7M | 1,437,650 | 0.02% | 8q | -4.0%-$2.2M |
| FMR LLC | $53.6M | 1,433,878 | 0.00% | 23q | +5001.7%+$52.5M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $53.3M | 1,426,608 | 0.06% | 9q | -8.3%-$4.8M |
| Invesco Ltd. | $46.4M | 1,243,053 | 0.00% | 31q | +242.7%+$32.9M |
| PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. | $44.4M | 1,188,747 | 2.20% | 18q | -18.6%-$10.1M |
| TWO SIGMA INVESTMENTS, LP | $42.0M | 1,124,963 | 0.03% | 15q | -14.8%-$7.3M |
| PRUDENTIAL FINANCIAL INC | $39.2M | 1,048,320 | 0.04% | 27q | +18.4%+$6.1M |
| BARCLAYS PLC | $36.0M | 962,382 | 0.01% | 31q | -48.7%-$34.1M |
| MORGAN STANLEY | $33.9M | 908,083 | 0.00% | 35q | +11.7%+$3.5M |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | $33.5M | 896,517 | 0.05% | new | NEW |
| LOOMIS SAYLES & CO L P | $33.0M | 884,023 | 0.04% | new | NEW |
| Boston Partners | $30.0M | 802,469 | 0.03% | 3q | -1.6%-$498.3K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $28.5M | 761,676 | 0.00% | 31q | +2.4%+$661.6K |
| Sixth Street Partners Management Company, L.P. | $28.5M | 761,676 | 0.00% | new | NEW |
| NORTHERN TRUST CORP | $28.3M | 756,476 | 0.00% | 31q | +7.4%+$1.9M |
| UBS Group AG | $27.5M | 736,554 | 0.00% | 31q | +88.8%+$12.9M |
| Bank of New York Mellon Corp | $24.7M | 659,883 | 0.00% | 31q | HELD |
| ROYCE & ASSOCIATES LP | $22.3M | 597,646 | 0.18% | 31q | -26.9%-$8.2M |
| BNP PARIBAS FINANCIAL MARKETS | $21.4M | 573,164 | 0.01% | 31q | +47.1%+$6.9M |
| OBERWEIS ASSET MANAGEMENT INC/ | $20.6M | 552,000 | 0.43% | 2q | +9.5%+$1.8M |
| D. E. Shaw & Co., Inc. | $20.5M | 547,577 | 0.01% | 2q | +107.9%+$10.6M |
| VANGUARD FIDUCIARY TRUST CO | $19.1M | 511,169 | 0.00% | 2q | +3.4%+$625.3K |
| Public Sector Pension Investment Board | $18.5M | 494,636 | 0.02% | 17q | +93.4%+$8.9M |
| ROYAL BANK OF CANADA | $17.3M | 463,003 | 0.00% | 31q | -13.7%-$2.7M |
| BANK OF AMERICA CORP /DE/ | $17.2M | 461,387 | 0.00% | 31q | +123.2%+$9.5M |
| Aptus Capital Advisors, LLC | $17.1M | 457,762 | 0.12% | 6q | +0.6%+$103.1K |
| PRINCIPAL FINANCIAL GROUP INC | $16.7M | 446,423 | 0.01% | 20q | +2.3%+$379.0K |
| Defiance ETFs, LLC | $15.7M | 412,194 | 0.21% | 3q | -2.6%-$415.9K |
| WASATCH ADVISORS LP | $15.5M | 416,114 | 0.10% | new | NEW |
| Impax Asset Management Group plc | $15.3M | 410,000 | 0.10% | 18q | -12.8%-$2.2M |
| Ceredex Value Advisors LLC | $14.5M | 387,750 | 0.41% | new | NEW |
| PARADIGM CAPITAL MANAGEMENT INC/NY | $14.4M | 384,700 | 0.39% | 31q | -4.2%-$623.9K |
| PEAK6 LLC | $12.4M | options only | 0.03% | 2q | OPTIONS |
| WELLS FARGO & COMPANY/MN | $12.3M | 329,534 | 0.00% | 31q | -50.5%-$12.5M |
| Jump Financial, LLC | $12.1M | 324,417 | 0.10% | 2q | +12.9%+$1.4M |
| Uniplan Investment Counsel, Inc. | $12.1M | 322,762 | 0.57% | 2q | +203.7%+$8.1M |
| Bridge City Capital, LLC | $11.1M | 296,239 | 2.53% | 22q | -26.1%-$3.9M |
| CRAWFORD INVESTMENT COUNSEL INC | $11.0M | 295,532 | 0.18% | 4q | -7.8%-$937.4K |
| JPMORGAN CHASE & CO | $10.4M | 283,306 | 0.00% | 31q | -13.3%-$1.6M |
| ENVESTNET ASSET MANAGEMENT INC | $9.3M | 247,901 | 0.00% | new | NEW |
| RICE HALL JAMES & ASSOCIATES, LLC | $9.2M | 245,117 | 0.45% | 21q | -27.2%-$3.4M |
| Nuveen, LLC | $8.8M | 236,607 | 0.00% | 6q | +49.2%+$2.9M |
| AMERICAN CENTURY COMPANIES INC | $8.8M | 234,381 | 0.00% | 18q | +5.4%+$448.8K |
| Portolan Capital Management, LLC | $8.5M | 226,920 | 0.32% | new | NEW |
| PEREGRINE CAPITAL MANAGEMENT LLC | $7.5M | 201,952 | 0.25% | 22q | -8.0%-$660.0K |
| SUMMIT PARTNERS L P | $7.5M | 200,065 | 1.23% | 31q | HELD |
| Legal & General Group Plc | $7.1M | 189,446 | 0.00% | 31q | -0.6%-$43.7K |
| Informed Momentum Co LLC | $7.1M | 188,768 | 0.63% | new | NEW |
| Connor, Clark & Lunn Investment Management Ltd. | $6.7M | 178,808 | 0.01% | 10q | +31.1%+$1.6M |
| MILLENNIUM MANAGEMENT LLC | $6.6M | 175,579 | 0.00% | 9q | -57.7%-$8.9M |
| RHUMBLINE ADVISERS | $6.4M | 172,167 | 0.00% | 31q | -10.4%-$745.1K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $6.3M | 13,733 | 0.00% | 31q | -87.3%-$43.5M |
| AMERIPRISE FINANCIAL INC | $6.3M | 168,623 | 0.00% | 19q | -31.8%-$2.9M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $5.9M | 159,216 | 0.00% | 14q | -1.4%-$87.3K |
| IQ EQ FUND MANAGEMENT (IRELAND) Ltd | $5.9M | 158,843 | 0.38% | 25q | -9.3%-$610.9K |
| SEI INVESTMENTS CO | $5.7M | 151,678 | 0.00% | 23q | +25.1%+$1.1M |
| Creative Planning | $5.6M | 149,624 | 0.00% | 10q | +17.6%+$835.2K |
| VOYA INVESTMENT MANAGEMENT LLC | $5.4M | 143,421 | 0.00% | 31q | -13.8%-$861.4K |
| Hennion & Walsh Asset Management, Inc. | $5.3M | 141,978 | 0.15% | 7q | +24.4%+$1.0M |
| TRUIST FINANCIAL CORP | $5.2M | 138,302 | 0.01% | 6q | +20.2%+$870.0K |
| CREDIT AGRICOLE S A | $5.2M | 138,000 | 0.01% | new | NEW |
| CITADEL ADVISORS LLC | $5.1M | 93,240 | 0.00% | 31q | -81.9%-$23.1M |
| Swiss National Bank | $5.1M | 136,700 | 0.00% | 31q | -4.0%-$213.0K |
| 4D Advisors, LLC | $5.0M | 135,000 | 1.94% | new | NEW |
| Russell Investments Group, Ltd. | $5.0M | 134,991 | 0.00% | 26q | -65.4%-$9.5M |
| SIMPLEX TRADING, LLC | $4.9M | 41,672 | 0.00% | 29q | +255.7%+$3.5M |
| CITIGROUP INC | $4.8M | 128,365 | 0.00% | 31q | +180.6%+$3.1M |
| VICTORY CAPITAL MANAGEMENT INC | $4.6M | 122,942 | 0.00% | 24q | -10.5%-$538.4K |
| TUDOR INVESTMENT CORP ET AL | $4.5M | 120,260 | 0.01% | 9q | -49.7%-$4.4M |
| Caption Management, LLC | $4.5M | options only | 0.02% | new | OPTIONS |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM | $4.3M | 114,819 | 0.01% | 31q | -11.4%-$552.5K |
| FEDERATED HERMES, INC. | $4.3M | 114,416 | 0.01% | 15q | +7.7%+$304.4K |
| PDT Partners, LLC | $4.2M | 111,226 | 0.22% | 3q | +12.8%+$470.7K |
| Universal- Beteiligungs- und Servicegesellschaft mbH | $3.9M | 104,707 | 0.01% | 6q | +16.1%+$541.3K |
| Brevan Howard Capital Management LP | $3.8M | 102,085 | 0.03% | 2q | +310.0%+$2.9M |
| JANE STREET GROUP, LLC | $3.8M | 93,880 | 0.00% | 2q | -84.2%-$20.3M |
| FRANKLIN RESOURCES INC | $3.7M | 99,729 | 0.00% | 20q | -4.1%-$159.5K |
| HSBC HOLDINGS PLC | $3.5M | 94,437 | 0.00% | 10q | -46.3%-$3.0M |
| DEUTSCHE BANK AG\ | $3.3M | 87,103 | 0.00% | 34q | +8.2%+$245.8K |
| AQR CAPITAL MANAGEMENT LLC | $3.1M | 83,207 | 0.00% | 31q | +66.9%+$1.2M |
| NEW YORK STATE COMMON RETIREMENT FUND | $3.0M | 81,199 | 0.00% | 31q | -65.6%-$5.8M |
| OSAIC HOLDINGS, INC. | $3.0M | 80,043 | 0.00% | 5q | +1760.6%+$2.8M |
| CANADA PENSION PLAN INVESTMENT BOARD | $2.8M | 75,500 | 0.00% | 9q | -3.6%-$104.6K |
| AEGON ASSET MANAGEMENT UK Plc | $2.8M | 74,609 | 0.03% | 2q | -24.5%-$903.8K |
| IMC-Chicago, LLC | $2.8M | options only | 0.00% | 2q | OPTIONS |
| KLP KAPITALFORVALTNING AS | $2.6M | 69,500 | 0.01% | 7q | HELD |
| Cresset Asset Management, LLC | $2.6M | 69,393 | 0.01% | 7q | -4.8%-$129.3K |
| Quantinno Capital Management LP | $2.6M | 68,398 | 0.00% | 6q | +24.3%+$499.5K |
| Vest Financial, LLC | $2.5M | 66,670 | 0.03% | new | NEW |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-07-30 | 13G | First Trust Portfolios L.P.with 2 co-filers | 6.7% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 294 | $2.7B | 72,598,743 | 77 | 83 | 87 | 1.1% |
| Q1 2026 | 247 | $1.6B | 67,052,069 | 54 | 91 | 62 | 0.5% |
| Q4 2025 | 223 | $1.1B | 63,844,819 | 31 | 72 | 76 | 0.0% |
| Q3 2025 | 217 | $1.2B | 64,349,814 | 35 | 74 | 73 | 0.1% |
| Q2 2025 | 211 | $1.2B | 63,883,900 | 20 | 80 | 82 | 0.1% |
| Q1 2025 | 232 | $1.1B | 65,558,353 | 53 | 74 | 73 | 0.4% |
| Q4 2024 | 198 | $1.1B | 60,594,543 | 26 | 74 | 56 | 0.0% |
| Q3 2024 | 183 | $898.4M | 62,623,899 | 19 | 67 | 57 | 0.1% |
| Q2 2024 | 195 | $884.7M | 64,178,833 | 44 | 69 | 53 | 0.2% |
| Q1 2024 | 164 | $913.8M | 66,587,971 | 21 | 55 | 56 | 0.2% |
| Q4 2023 | 170 | $851.8M | 64,910,113 | 22 | 62 | 58 | 0.2% |
| Q3 2023 | 167 | $905.6M | 60,591,333 | 14 | 56 | 60 | 0.2% |
| Q2 2023 | 168 | $881.5M | 60,752,044 | 13 | 62 | 67 | 0.1% |
| Q1 2023 | 182 | $883.2M | 57,392,472 | 23 | 65 | 53 | 0.0% |
| Q4 2022 | 172 | $901.7M | 54,501,247 | 38 | 44 | 59 | 0.1% |
| Q3 2022 | 199 | $871.5M | 65,254,423 | 27 | 83 | 60 | 0.6% |
| Q2 2022 | 199 | $995.2M | 68,851,049 | 41 | 70 | 63 | 0.5% |
| Q1 2022 | 193 | $900.7M | 64,354,412 | 29 | 67 | 78 | 0.3% |
| Q4 2021 | 176 | $1.1B | 64,982,888 | 37 | 62 | 51 | 0.3% |
| Q3 2021 | 151 | $907.5M | 67,226,105 | 28 | 51 | 48 | 0.2% |
| Q2 2021 | 133 | $748.7M | 66,383,085 | 16 | 40 | 50 | 0.2% |
| Q1 2021 | 137 | $632.3M | 65,708,419 | 19 | 46 | 54 | 0.3% |
| Q4 2020 | 145 | $623.2M | 63,071,830 | 26 | 59 | 42 | 0.2% |
| Q3 2020 | 140 | $383.5M | 60,019,302 | 28 | 61 | 35 | 0.2% |
| Q2 2020 | 126 | $389.4M | 57,212,382 | 30 | 55 | 25 | 0.0% |
| Q1 2020 | 108 | $335.9M | 53,887,498 | 21 | 35 | 31 | 0.0% |
| Q4 2019 | 105 | $366.0M | 53,254,193 | 13 | 32 | 45 | 0.0% |
| Q3 2019 | 102 | $368.4M | 52,664,175 | 16 | 35 | 37 | 1.0% |
| Q2 2019 | 96 | $378.1M | 52,867,593 | 7 | 51 | 29 | 4.6% |
| Q1 2019 | 111 | $364.1M | 49,875,790 | 18 | 51 | 26 | 2.9% |
| Q4 2018 | 102 | $301.2M | 47,570,287 | 2 | 1 | 1 | 1.5% |