A10 NETWORKS INC (ATEN) Institutional Shareholders
A10 NETWORKS INC (ATEN) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $2.85B in ATEN holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of ATEN tracked by InsiderSet, reporting ownership valued at approximately $506.92M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $354.82M, representing an estimated loss of -30.01% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 49% of the total disclosed ATEN value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Vanguard Portfolio Management Llc, First Trust Advisors Lp, and several other long-term asset managers with concentrated positions in A10 NETWORKS INC (ATEN).
This page ranks the largest institutional ATEN shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
304
Total Reported Value
$2.85B
Largest Holder
Blackrock, Inc.
Largest Position
$506.92M
Insider Transactions (90d)
3
Latest Filing Quarter
Q2 2026
New Institutional Positions
90
Funds Exiting Positions
1
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 13,568,496 | $506,918,999 | $354,816,170 | -$152,102,829 | -30.01% | |
| Vanguard Portfolio Management Llc | 0.01% | 3,462,058 | $129,342,487 | $90,532,817 | -$38,809,670 | -30.01% | |
| First Trust Advisors Lp | 0.07% | 3,244,739 | $121,223,449 | $84,849,925 | -$36,373,524 | -30.01% | |
| State Street Corp | 0.00% | 3,082,631 | $115,167,094 | $80,610,801 | -$34,556,293 | -30.01% | |
| Vanguard Capital Management Llc | 0.00% | 3,071,071 | $114,735,213 | $80,308,507 | -$34,426,706 | -30.01% | |
| Penserra Capital Management Llc | 0.88% | 3,068,045 | $114,621,000 | $80,229,377 | -$34,391,623 | -30.00% | |
| Boston Trust Walden Corp | 0.69% | 2,416,808 | $90,291,947 | $63,199,529 | -$27,092,418 | -30.01% | |
| Wellington Management Group Llp | 0.01% | 1,959,853 | $73,220,107 | $51,250,156 | -$21,969,951 | -30.01% | |
| Geode Capital Management, Llc | 0.00% | 1,813,638 | $67,771,453 | $47,426,634 | -$20,344,819 | -30.02% | |
| Goldman Sachs Group Inc | 0.01% | 1,784,946 | $66,685,570 | $46,676,338 | -$20,009,232 | -30.01% | |
| Dimensional Fund Advisors Lp | 0.01% | 1,599,129 | $59,740,024 | $41,817,223 | -$17,922,801 | -30.00% | |
| Renaissance Technologies LLC | Jim Simons | 0.08% | 1,520,287 | $56,797,922 | $39,755,505 | -$17,042,417 | -30.01% |
| Arrowstreet Capital, Limited Partnership | 0.02% | 1,437,650 | $53,710,604 | $37,594,548 | -$16,116,057 | -30.01% | |
| Fmr Llc | 0.00% | 1,433,878 | $53,569,672 | $37,495,910 | -$16,073,762 | -30.01% | |
| Mirae Asset Global Etfs Holdings Ltd. | 0.06% | 1,426,608 | $53,274,522 | $37,305,799 | -$15,968,723 | -29.97% | |
| Invesco Ltd. | 0.00% | 1,243,053 | $46,440,461 | $32,505,836 | -$13,934,625 | -30.01% | |
| Punch & Associates Investment Management, Inc. | 2.20% | 1,188,747 | $44,411,605 | $31,085,734 | -$13,325,871 | -30.01% | |
| Two Sigma Investments, Lp | 0.03% | 1,124,963 | $42,028,618 | $29,417,782 | -$12,610,836 | -30.01% | |
| Prudential Financial Inc | 0.04% | 1,048,320 | $39,165,235 | $27,413,568 | -$11,751,667 | -30.01% | |
| Barclays Plc | 0.01% | 962,382 | $35,954,591 | $25,166,289 | -$10,788,302 | -30.01% | |
| Morgan Stanley | 0.00% | 908,083 | $33,926,044 | $23,746,370 | -$10,179,674 | -30.01% | |
| Nomura Asset Management International Inc. | 0.05% | 896,517 | $33,494,000 | $23,443,920 | -$10,050,080 | -30.01% | |
| Price T Rowe Associates Inc | 0.00% | 894,398 | $33,416,000 | $23,388,508 | -$10,027,492 | -30.01% | |
| Loomis Sayles & Co L P | 0.04% | 884,023 | $33,027,099 | $23,117,201 | -$9,909,898 | -30.01% | |
| Boston Partners | 0.03% | 802,469 | $30,016,792 | $20,984,564 | -$9,032,228 | -30.09% | |
| Charles Schwab Investment Management Inc | 0.00% | 761,676 | $28,456,215 | $19,917,827 | -$8,538,388 | -30.01% | |
| Northern Trust Corp | 0.00% | 756,476 | $28,261,943 | $19,781,847 | -$8,480,096 | -30.01% | |
| Ubs Group Ag | 0.00% | 736,554 | $27,517,658 | $19,260,887 | -$8,256,771 | -30.01% | |
| Bank Of New York Mellon Corp | 0.00% | 659,883 | $24,653,236 | $17,255,940 | -$7,397,296 | -30.01% | |
| Royce & Associates Lp | 0.18% | 597,646 | $22,328,055 | $15,628,443 | -$6,699,612 | -30.01% | |
| Bnp Paribas Financial Markets | 0.01% | 573,164 | $21,413,407 | $14,988,239 | -$6,425,168 | -30.01% | |
| Oberweis Asset Management Inc/ | 0.43% | 552,000 | $20,622,720 | $14,434,800 | -$6,187,920 | -30.01% | |
| D. E. Shaw & Co., Inc. | 0.01% | 547,577 | $20,457,477 | $14,319,139 | -$6,138,338 | -30.01% | |
| Vanguard Fiduciary Trust Co | 0.00% | 511,169 | $19,097,274 | $13,367,069 | -$5,730,205 | -30.01% | |
| Royal Bank Of Canada | 0.00% | 463,003 | $17,298,000 | $12,107,528 | -$5,190,472 | -30.01% | |
| Bank Of America Corp | 0.00% | 461,387 | $17,237,418 | $12,065,270 | -$5,172,148 | -30.01% | |
| Aptus Capital Advisors, Llc | 0.12% | 457,762 | $17,101,989 | $11,970,476 | -$5,131,513 | -30.01% | |
| Acadian Asset Management Llc | 0.02% | 455,769 | $17,012,000 | $11,918,359 | -$5,093,641 | -29.94% | |
| Principal Financial Group Inc | 0.01% | 446,423 | $16,678,363 | $11,673,961 | -$5,004,402 | -30.01% | |
| Defiance Etfs, Llc | 0.22% | 412,194 | $15,663,372 | $10,778,873 | -$4,884,499 | -31.18% | |
| Wasatch Advisors Lp | 0.10% | 416,114 | $15,546,019 | $10,881,381 | -$4,664,638 | -30.01% | |
| Impax Asset Management Group Plc | 0.10% | 410,000 | $15,317,600 | $10,721,500 | -$4,596,100 | -30.01% | |
| Ceredex Value Advisors Llc | 0.41% | 387,750 | $14,486,340 | $10,139,663 | -$4,346,678 | -30.01% | |
| Paradigm Capital Management Inc/Ny | 0.39% | 384,700 | $14,372,392 | $10,059,905 | -$4,312,487 | -30.01% | |
| Wells Fargo & Company/Mn | 0.00% | 329,534 | $12,311,401 | $8,617,314 | -$3,694,087 | -30.01% | |
| Jump Financial, Llc | 0.11% | 324,417 | $12,120,220 | $8,483,505 | -$3,636,715 | -30.01% | |
| Bridge City Capital, Llc | 2.53% | 296,239 | $11,067,489 | $7,746,650 | -$3,320,839 | -30.01% | |
| Crawford Investment Counsel Inc | 0.18% | 295,532 | $11,041,076 | $7,728,162 | -$3,312,914 | -30.01% | |
| Jpmorgan Chase & Co | 0.00% | 283,306 | $10,409,889 | $7,408,452 | -$3,001,437 | -28.83% | |
| Envestnet Asset Management Inc | 0.00% | 247,901 | $9,261,565 | $6,482,611 | -$2,778,954 | -30.01% |
Frequently asked questions about ATEN
Who owns the most ATEN stock?
The largest holders of ATEN are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for A10 NETWORKS INC (ATEN).
Is ATEN widely held by superinvestors?
Many widely followed stocks like ATEN appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly ATEN is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.