A10 NetworksATEN
13F holders, Q2 2026 (June 30)310holders +46
75new positions
27sold out
10famous investors
$37.37avg. 13F price*
At the end of Q2 2026, 310 institutions reported holding A10 Networks Inc. (ATEN) in their 13F filings, up 46 from Q1 2026. 75 opened new positions and 27 sold out. The largest holders were BlackRock, Inc. ($506.9M), Vanguard Portfolio Management LLC ($129.3M) and First Trust Advisors LP ($121.2M). 10 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 David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio).
- Company
- A10 Networks Inc.
- CUSIP
- 002121101
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 75 | $178.0M |
| Exits | 27 | $47.0M |
All 13F filers, Q1 2026 → Q2 2026: 12,434,091 shares bought and 8,129,762 shares sold, net +4,304,329 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 310 holders
| BlackRock, Inc. | 0.01% | Add +3.7% | 13,568,496 | $506.9M |
| Vanguard Portfolio Management LLC | 0.01% | Add +2.2% | 3,462,058 | $129.3M |
| First Trust Advisors LP | 0.07% | Add +88.7% | 3,244,739 | $121.2M |
| State Street Corp. | 0.00% | Reduce -0.2% | 3,082,631 | $115.2M |
| Vanguard Capital Management LLC | 0.00% | Reduce -1.6% | 3,071,071 | $114.7M |
| Penserra Capital Management LLC | 0.88% | Reduce -14.6% | 3,068,045 | $114.6M |
| Boston Trust Walden Corp | 0.69% | Add +11.2% | 2,416,808 | $90.3M |
| Wellington Management Group LLP | 0.01% | Reduce -5.5% | 1,959,853 | $73.2M |
| Geode Capital Management, LLC | 0.00% | Add +5.6% | 1,813,638 | $67.8M |
| Goldman Sachs Group Inc. | 0.01% | Add +50.4% | 1,784,946 | $66.7M |
| Dimensional Fund Advisors LP | 0.01% | Reduce -2.3% | 1,599,129 | $59.7M |
| Renaissance Technologies | 0.08% | Reduce -14.8% | 1,520,287 | $56.8M |
| Arrowstreet Capital, Limited Partnership | 0.02% | Reduce -4.0% | 1,437,650 | $53.7M |
| FMR LLC | 0.00% | Add +5001.7% | 1,433,878 | $53.6M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.06% | Reduce -8.3% | 1,426,608 | $53.3M |
| Invesco Ltd. | 0.00% | Add +242.8% | 1,243,053 | $46.4M |
| Punch & Associates Investment Management, Inc. | 2.22% | Reduce -18.6% | 1,188,747 | $44.4M |
| Two Sigma Investments, LP | 0.03% | Reduce -14.8% | 1,124,963 | $42.0M |
| Prudential Financial Inc. | 0.04% | Add +18.4% | 1,048,320 | $39.2M |
| Barclays PLC | 0.01% | Reduce -48.7% | 962,382 | $36.0M |
| Morgan Stanley | 0.00% | Add +11.7% | 908,083 | $33.9M |
| Nomura Asset Management International Inc. | 0.05% | New | 896,517 | $33.5M |
| T. Rowe Price Associates Inc. | 0.00% | Reduce -16.6% | 894,398 | $33.4M |
| Loomis Sayles & Co. L P | 0.04% | New | 884,023 | $33.0M |
| Boston Partners | 0.03% | Reduce -1.6% | 802,469 | $30.0M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +2.4% | 761,676 | $28.5M |
| Northern Trust Corp. | 0.00% | Add +7.4% | 756,476 | $28.3M |
| UBS Group AG | 0.00% | Add +88.8% | 736,554 | $27.5M |
| Bank of New York Mellon Corp | 0.00% | Reduce -0.1% | 659,883 | $24.7M |
| Royce & Associates LP | 0.18% | Reduce -26.9% | 597,646 | $22.3M |
| BNP Paribas Financial Markets | 0.01% | Add +47.1% | 573,164 | $21.4M |
| Oberweis Asset Management Inc./ | 0.43% | Add +9.5% | 552,000 | $20.6M |
| D. E. Shaw & Co. | 0.01% | Add +107.9% | 547,577 | $20.5M |
| Vanguard Fiduciary Trust Co. | 0.00% | Add +3.4% | 511,169 | $19.1M |
| Royal Bank of Canada | 0.00% | Reduce -13.7% | 463,003 | $17.3M |
| Bank of America Corp. | 0.00% | Add +123.3% | 461,387 | $17.2M |
| Aptus Capital Advisors, LLC | 0.13% | Add +0.6% | 457,762 | $17.1M |
| Acadian Asset Management LLC | 0.02% | New | 455,769 | $17.0M |
| Principal Financial Group Inc. | 0.01% | Add +2.3% | 446,423 | $16.7M |
| Defiance ETFs, LLC | 0.22% | Reduce -2.6% | 412,194 | $15.7M |
| Wasatch Advisors LP | 0.10% | New | 416,114 | $15.5M |
| Impax Asset Management Group plc | 0.10% | Reduce -12.8% | 410,000 | $15.3M |
| Ceredex Value Advisors LLC | 0.41% | New | 387,750 | $14.5M |
| Paradigm Capital Management Inc. | 0.39% | Reduce -4.2% | 384,700 | $14.4M |
| Wells Fargo & Company | 0.00% | Reduce -0.9% | 329,534 | $12.3M |
| Jump Financial, LLC | 0.12% | Add +12.9% | 324,417 | $12.1M |
| Bridge City Capital, LLC | 2.53% | Reduce -26.1% | 296,239 | $11.1M |
| Crawford Investment Counsel Inc. | 0.18% | Reduce -7.8% | 295,532 | $11.0M |
| JPMorgan Chase & Co. | 0.00% | Reduce -13.3% | 283,306 | $10.4M |
| Envestnet Asset Management Inc. | 0.00% | New | 247,901 | $9.3M |
| Public Sector Pension Investment Board | 0.02% | Reduce -3.3% | 247,318 | $9.2M |
| Rice Hall James & Associates, LLC | 0.45% | Reduce -27.2% | 245,117 | $9.2M |
| Nuveen, LLC | 0.00% | Add +49.2% | 236,607 | $8.8M |
| American Century Companies Inc. | 0.00% | Add +5.4% | 234,381 | $8.8M |
| Portolan Capital Management, LLC | 0.32% | New | 226,920 | $8.5M |
| Peregrine Capital Management LLC | 0.25% | Reduce -8.0% | 201,952 | $7.5M |
| Summit Partners L P | 1.23% | No change | 200,065 | $7.5M |
| Legal & General Group Plc | 0.00% | Reduce -0.6% | 189,446 | $7.1M |
| Informed Momentum Co LLC | 0.63% | New | 188,768 | $7.1M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.01% | Add +31.1% | 178,808 | $6.7M |
| Millennium Management | 0.00% | Reduce -57.7% | 175,579 | $6.6M |
| Rhumbline Advisers | 0.00% | Reduce -10.4% | 172,167 | $6.4M |
| Bessemer Group Inc. | 0.01% | No change | 171,223 | $6.4M |
| Ameriprise Financial Inc. | 0.00% | Add +36.5% | 168,623 | $6.3M |
| Uniplan Investment Counsel, Inc. | 0.58% | Add +51.9% | 161,381 | $6.0M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -1.4% | 159,216 | $5.9M |
| IQ EQ FUND MANAGEMENT (IRELAND) Ltd | 0.38% | Reduce -9.3% | 158,843 | $5.9M |
| Sei Investments Co. | 0.01% | Add +25.1% | 151,678 | $5.7M |
| Creative Planning | 0.00% | Add +17.6% | 149,624 | $5.6M |
| Harbor Capital Advisors, Inc. | 0.38% | Reduce -21.1% | 147,669 | $5.5M |
| Voya Investment Management LLC | 0.01% | Reduce -13.8% | 143,421 | $5.4M |
| Hennion & Walsh Asset Management, Inc. | 0.15% | Add +24.4% | 141,978 | $5.3M |
| Truist Financial Corp. | 0.01% | Add +20.3% | 138,302 | $5.2M |
| Credit Agricole S A | 0.01% | New | 138,000 | $5.2M |
| Swiss National Bank | 0.00% | Reduce -4.0% | 136,700 | $5.1M |
| 4D Advisors, LLC | 1.94% | New | 135,000 | $5.0M |
| Russell Investments Group, Ltd. | 0.00% | Reduce -65.4% | 134,991 | $5.0M |
| Citigroup Inc. | 0.00% | Add +180.6% | 128,365 | $4.8M |
| Victory Capital Management Inc. | 0.00% | Reduce -10.5% | 122,942 | $4.6M |
| Tudor Investment Corporation | 0.02% | Reduce -49.6% | 120,260 | $4.5M |
| State Board of Administration of Florida Retirement System | 0.01% | Reduce -11.4% | 114,819 | $4.3M |
| Federated Hermes, Inc. | 0.01% | Add +7.7% | 114,416 | $4.3M |
| PDT Partners, LLC | 0.22% | Add +12.8% | 111,226 | $4.2M |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.01% | Add +16.1% | 104,707 | $3.9M |
| Brevan Howard Capital Management LP | 0.06% | Add +310.0% | 102,085 | $3.8M |
| Franklin Resources Inc. | 0.00% | Reduce -4.1% | 99,729 | $3.7M |
| HSBC Holdings PLC | 0.00% | Reduce -46.3% | 94,437 | $3.5M |
| Jane Street Group, LLC | 0.00% | Reduce -84.3% | 93,880 | $3.5M |
| Citadel Advisors | 0.00% | Reduce -81.9% | 93,240 | $3.5M |
| Deutsche Bank AG | 0.00% | Add +8.2% | 87,103 | $3.3M |
| AQR Capital Management | 0.00% | Add +66.9% | 83,207 | $3.1M |
| New York State Common Retirement Fund | 0.00% | Reduce -65.5% | 81,199 | $3.0M |
| Osaic Holdings, Inc. | 0.00% | Add +1760.6% | 80,043 | $3.0M |
| Allianz Asset Management GmbH | 0.00% | Add +20.6% | 79,525 | $3.0M |
| California State Teachers Retirement System | 0.00% | Reduce -16.1% | 76,768 | $2.9M |
| Canada Pension Plan Investment Board | 0.00% | Reduce -3.6% | 75,500 | $2.8M |
| AEGON ASSET MANAGEMENT UK Plc | 0.03% | Reduce -24.5% | 74,609 | $2.8M |
| KLP Kapitalforvaltning As | 0.01% | No change | 69,500 | $2.6M |
| Cresset Asset Management, LLC | 0.01% | Reduce -4.8% | 69,393 | $2.6M |
| Quantinno Capital Management LP | 0.00% | Add +24.3% | 68,398 | $2.6M |
"% of holder's portfolio" is ATEN's weight in each manager's 13F, not the share of A10 Networks Inc. the manager owns.