A10 NetworksATEN
13F holders, Q3 2025 (September 30)236holders +7
38new positions
32sold out
9famous investors
$18.15avg. 13F price*
At the end of Q3 2025, 236 institutions reported holding A10 Networks Inc. (ATEN) in their 13F filings, up 7 from Q2 2025. 38 opened new positions and 32 sold out. The largest holders were BlackRock, Inc. ($237.0M), Vanguard Group Inc. ($131.3M) and Penserra Capital Management LLC ($66.4M). 9 famous investors held it, including Jim Simons / Peter Brown (0.1% of Renaissance Technologies's portfolio), Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio) and Mario Gabelli (0.0% of GAMCO Investors's portfolio).
- Company
- A10 Networks Inc.
- CUSIP
- 002121101
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 38 | $35.1M |
| Exits | 32 | $19.8M |
All 13F filers, Q2 2025 → Q3 2025: 5,715,340 shares bought and 5,819,718 shares sold, net −104,378 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 236 holders
| BlackRock, Inc. | 0.00% | Reduce -1.3% | 13,058,107 | $237.0M |
| Vanguard Group Inc. | 0.00% | Reduce -1.3% | 7,235,070 | $131.3M |
| Penserra Capital Management LLC | 0.80% | Reduce -7.7% | 3,658,453 | $66.4M |
| State Street Corp. | 0.00% | Reduce -1.0% | 3,288,187 | $59.7M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.08% | Add +1.3% | 2,699,629 | $49.0M |
| Boston Trust Walden Corp | 0.35% | Add +22.1% | 2,639,992 | $47.9M |
| Renaissance Technologies | 0.06% | Reduce -4.5% | 2,386,787 | $43.3M |
| Wellington Management Group LLP | 0.01% | Add +40.2% | 2,054,213 | $37.3M |
| First Trust Advisors LP | 0.03% | Add +4.3% | 2,034,271 | $36.9M |
| Geode Capital Management, LLC | 0.00% | Reduce -0.9% | 1,767,579 | $32.1M |
| Dimensional Fund Advisors LP | 0.01% | Reduce -4.7% | 1,633,590 | $29.6M |
| T. Rowe Price Associates Inc. | 0.00% | Add +4.5% | 1,573,065 | $28.6M |
| Punch & Associates Investment Management, Inc. | 1.52% | Add +4.0% | 1,431,358 | $26.0M |
| Barclays PLC | 0.01% | Add +103.7% | 1,365,259 | $24.8M |
| Arrowstreet Capital, Limited Partnership | 0.01% | Reduce -6.2% | 1,226,347 | $22.3M |
| Morgan Stanley | 0.00% | Reduce -27.9% | 755,476 | $13.7M |
| Invesco Ltd. | 0.00% | Add +24.3% | 741,030 | $13.4M |
| Northern Trust Corp. | 0.00% | Reduce -3.6% | 727,631 | $13.2M |
| Bank of New York Mellon Corp | 0.00% | Reduce -2.3% | 717,401 | $13.0M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +0.5% | 709,212 | $12.9M |
| Royce & Associates LP | 0.13% | Reduce -3.8% | 694,828 | $12.6M |
| Two Sigma Investments, LP | 0.02% | Add +19.2% | 683,246 | $12.4M |
| Goldman Sachs Group Inc. | 0.00% | Add +11.4% | 620,182 | $11.3M |
| UBS Group AG | 0.00% | Add +55.3% | 606,156 | $11.0M |
| Qube Research & Technologies Ltd | 0.01% | Add +68.4% | 563,476 | $10.2M |
| Victory Capital Management Inc. | 0.01% | Add +12.6% | 467,367 | $8.5M |
| Two Sigma Advisers, LP | 0.02% | Add +2.7% | 453,400 | $8.2M |
| Aptus Capital Advisors, LLC | 0.07% | Add +38.5% | 448,423 | $8.1M |
| Principal Financial Group Inc. | 0.00% | Add +1.9% | 421,423 | $7.6M |
| Bridge City Capital, LLC | 2.03% | Add +0.4% | 419,748 | $7.6M |
| Paradigm Capital Management Inc. | 0.32% | Reduce -1.5% | 407,000 | $7.4M |
| JPMorgan Chase & Co. | 0.00% | Add +18.9% | 380,161 | $6.9M |
| Impax Asset Management Group plc | 0.04% | No change | 360,000 | $6.5M |
| Citadel Advisors | 0.01% | Add +59.0% | 350,793 | $6.4M |
| Tudor Investment Corporation | 0.04% | Reduce -21.0% | 319,422 | $5.8M |
| Crawford Investment Counsel Inc. | 0.09% | New | 286,817 | $5.2M |
| Public Sector Pension Investment Board | 0.02% | Add +14.5% | 281,460 | $5.1M |
| Rice Hall James & Associates, LLC | 0.27% | Reduce -19.0% | 273,797 | $5.0M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.02% | Add +4.4% | 268,944 | $4.9M |
| Peregrine Capital Management LLC | 0.14% | Reduce -32.1% | 252,746 | $4.6M |
| Voya Investment Management LLC | 0.01% | Reduce -9.6% | 248,468 | $4.5M |
| American Century Companies Inc. | 0.00% | Add +4.0% | 245,534 | $4.5M |
| IQ EQ FUND MANAGEMENT (IRELAND) Ltd | 0.29% | Add +1.9% | 238,252 | $4.3M |
| Harbor Capital Advisors, Inc. | 0.34% | Reduce -71.3% | 238,135 | $4.3M |
| Legal & General Group Plc | 0.00% | Reduce -78.4% | 214,466 | $3.9M |
| Hussman Strategic Advisors, Inc. | 0.83% | New | 210,000 | $3.8M |
| Man Group plc | 0.01% | Add +5.5% | 206,937 | $3.8M |
| Rhumbline Advisers | 0.00% | Reduce -2.7% | 202,075 | $3.7M |
| Assenagon Asset Management S.A. | 0.01% | New | 200,510 | $3.6M |
| Bank of America Corp. | 0.00% | Add +45.0% | 198,498 | $3.6M |
| Wells Fargo & Company | 0.00% | Reduce -20.2% | 190,329 | $3.5M |
| Summit Partners L P | 0.37% | No change | 187,367 | $3.4M |
| Prudential Financial Inc. | 0.00% | Reduce -35.1% | 186,534 | $3.4M |
| Marshall Wace, LLP | 0.00% | Reduce -71.7% | 175,083 | $3.2M |
| Hillsdale Investment Management Inc. | 0.09% | Reduce -2.5% | 172,700 | $3.1M |
| Nuveen, LLC | 0.00% | Reduce -2.4% | 164,395 | $3.0M |
| HRT Financial LP | 0.01% | New | 156,985 | $2.8M |
| BNP Paribas Financial Markets | 0.00% | Add +131.6% | 155,165 | $2.8M |
| Franklin Resources Inc. | 0.00% | Add +39.6% | 153,027 | $2.8M |
| October Effect Ltd | 3.07% | New | 153,490 | $2.8M |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.00% | Add +3.8% | 147,247 | $2.7M |
| Banque Cantonale Vaudoise | 0.10% | Add +16.7% | 146,812 | $2.7M |
| Millennium Management | 0.00% | Add +55.5% | 144,845 | $2.6M |
| Ameriprise Financial Inc. | 0.00% | Reduce -4.5% | 141,971 | $2.6M |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 0.00% | No change | 140,666 | $2.6M |
| Swiss National Bank | 0.00% | Reduce -1.0% | 139,800 | $2.5M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -54.5% | 136,287 | $2.5M |
| Trexquant Investment LP | 0.03% | New | 133,813 | $2.4M |
| State Board of Administration of Florida Retirement System | 0.00% | Reduce -2.3% | 130,741 | $2.4M |
| Sei Investments Co. | 0.00% | Reduce -32.2% | 126,266 | $2.3M |
| Voloridge Investment Management, LLC | 0.01% | Reduce -12.4% | 121,990 | $2.2M |
| Wedge Capital Management L L P | 0.04% | Add +30.1% | 119,015 | $2.2M |
| ExodusPoint Capital Management, LP | 0.03% | New | 107,364 | $1.9M |
| Mackenzie Financial Corp. | 0.00% | Reduce -55.5% | 102,676 | $1.9M |
| Martingale Asset Management L P | 0.05% | Reduce -0.6% | 101,293 | $1.8M |
| New York State Common Retirement Fund | 0.00% | No change | 97,845 | $1.8M |
| Teacher Retirement System of Texas | 0.01% | Add +12.0% | 96,906 | $1.8M |
| Truist Financial Corp. | 0.00% | Reduce -1.6% | 93,121 | $1.7M |
| Verity Asset Management, Inc. | 0.54% | Add +3.1% | 91,400 | $1.7M |
| Canada Pension Plan Investment Board | 0.00% | Reduce -13.4% | 85,300 | $1.5M |
| HSBC Holdings PLC | 0.00% | Add +65.2% | 83,459 | $1.5M |
| Citigroup Inc. | 0.00% | Reduce -30.3% | 80,472 | $1.5M |
| California State Teachers Retirement System | 0.00% | Add +0.0% | 80,099 | $1.5M |
| CANADA LIFE ASSURANCE Co | 0.00% | Add +4.0% | 80,265 | $1.4M |
| Legato Capital Management LLC | 0.15% | No change | 75,635 | $1.4M |
| Cresset Asset Management, LLC | 0.01% | Add +1.3% | 72,307 | $1.3M |
| Deutsche Bank AG | 0.00% | Add +13.5% | 71,399 | $1.3M |
| WINTON GROUP Ltd | 0.05% | Add +0.3% | 70,766 | $1.3M |
| Jacobs Levy Equity Management, Inc. | 0.01% | Reduce -85.2% | 70,739 | $1.3M |
| Alliancebernstein L.P. | 0.00% | Reduce -3.0% | 69,738 | $1.3M |
| Fisher Asset Management | 0.00% | Reduce -7.0% | 69,682 | $1.3M |
| Summit Global Investments | 0.07% | New | 68,731 | $1.2M |
| KLP Kapitalforvaltning As | 0.00% | Add +17.9% | 68,500 | $1.2M |
| Jane Street Group, LLC | 0.00% | New | 68,404 | $1.2M |
| Allianz Asset Management GmbH | 0.00% | Reduce -35.6% | 67,115 | $1.2M |
| Susquehanna International Group, LLP | 0.00% | Reduce -50.9% | 66,314 | $1.2M |
| Hennion & Walsh Asset Management, Inc. | 0.04% | Add +41.9% | 66,175 | $1.2M |
| QSV Equity Investors LLC | 1.21% | New | 65,479 | $1.2M |
| Globeflex Capital L P | 0.18% | No change | 65,303 | $1.2M |
| Tidal Investments LLC | 0.00% | Add +127.6% | 63,508 | $1.2M |
"% of holder's portfolio" is ATEN's weight in each manager's 13F, not the share of A10 Networks Inc. the manager owns.