New Positions
40 managers initiated
Top five by reported value
A10 Networks Inc NEW YORK STOCK EXCHANGE, INC.:ATEN
Institutional holders, quarter-over-quarter share deltas, and new and closed positions disclosed in Form 13F. Period 2025-12-31 · prior 2025-09-30.
40 new81 added121 reduced35 exited
Total Institutional Holders
240
as of 2025-12-31
Top Holder
BlackRock, Inc.
$229.7M
Largest QoQ Increase
Boston Partners
+840,140 sh
Largest QoQ Decrease
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.
-1,250,700 sh
New Positions(40)
Added To(81)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| GOLDMAN SACHS GROUP INC | 1,034,491 | +414,309 | $18.3M | +$7.0M | 66.8% |
| FIRST TRUST ADVISORS LP | 2,463,337 | +429,066 | $43.6M | +$6.7M | 21.1% |
| VANGUARD GROUP INC | 7,241,762 | +6,692 | $128.1M | -$3.2M | 0.1% |
| AlphaQuest LLC | 162,685 | +147,444 | $2.9M | +$2.6M | 967.4% |
| Invesco Ltd. | 836,178 | +95,148 | $14.8M | +$1.3M | 12.8% |
| MILLENNIUM MANAGEMENT LLC | 212,072 | +67,227 | $3.8M | +$1.1M | 46.4% |
| WELLS FARGO & COMPANY/MN | 256,125 | +65,796 | $4.5M | +$1.1M | 34.6% |
| FEDERATED HERMES, INC. | 106,382 | +60,204 | $1.9M | +$1.0M | 130.4% |
| BNP PARIBAS ARBITRAGE, SNC | 210,748 | +55,583 | $3.7M | +$911.9K | 35.8% |
| Qube Research & Technologies Ltd | 622,666 | +59,190 | $11.0M | +$787.9K | 10.5% |
| TUDOR INVESTMENT CORP ET AL | 370,444 | +51,022 | $6.6M | +$755.6K | 16.0% |
| Brooklyn Investment Group | 54,854 | +40,227 | $990.1K | +$724.6K | 275.0% |
| Trexquant Investment LP | 175,738 | +41,925 | $3.1M | +$680.1K | 31.3% |
| GEODE CAPITAL MANAGEMENT, LLC | 1,777,631 | +10,052 | $31.5M | -$634.4K | 0.6% |
| RICE HALL JAMES & ASSOCIATES, LLC | 316,512 | +42,715 | $5.6M | +$629.7K | 15.6% |
| Hennion & Walsh Asset Management, Inc. | 102,919 | +36,744 | $1.8M | +$619.6K | 55.5% |
| PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. | 1,435,626 | +4,268 | $25.4M | -$582.9K | 0.3% |
| TWO SIGMA INVESTMENTS, LP | 733,734 | +50,488 | $13.0M | +$578.8K | 7.4% |
| MORGAN STANLEY | 804,350 | +48,874 | $14.2M | +$517.1K | 6.5% |
| RAYMOND JAMES FINANCIAL INC | 71,399 | +28,367 | $1.3M | +$482.0K | 65.9% |
| DIMENSIONAL FUND ADVISORS LP | 1,648,788 | +15,198 | $29.2M | -$481.0K | 0.9% |
| COMMONWEALTH EQUITY SERVICES, LLC | 25,569 | +477 | $452.3K | +$451.9K | 1.9% |
| Creative Planning | 68,949 | +24,185 | $1.2M | +$407.2K | 54.0% |
| PRINCIPAL FINANCIAL GROUP INC | 452,246 | +30,823 | $8.0M | +$351.4K | 7.3% |
| TRUIST FINANCIAL CORP | 114,988 | +21,867 | $2.0M | +$344.0K | 23.5% |
| ROYCE & ASSOCIATES LP | 727,410 | +32,582 | $12.9M | +$256.8K | 4.7% |
| Aptus Capital Advisors, LLC | 450,385 | +1,962 | $8.0M | -$171.6K | 0.4% |
| Round Rock Advisors, LLC | 27,353 | +9,633 | $483.9K | +$164.6K | 54.4% |
| 1492 Capital Management LLC | 19,782 | +9,386 | $349.9K | +$161.3K | 90.3% |
| TWO SIGMA ADVISERS, LP | 474,000 | +20,600 | $8.4M | +$155.8K | 4.5% |
| CRAWFORD INVESTMENT COUNSEL INC | 302,992 | +16,175 | $5.4M | +$154.2K | 5.6% |
| FMR LLC | 16,716 | +6,711 | $295.7K | +$114.1K | 67.1% |
| Tower Research Capital LLC (TRC) | 6,888 | +4,554 | $121.8K | +$79.5K | 195.1% |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 31,734 | +5,114 | $561.4K | +$78.2K | 19.2% |
| Pacer Advisors, Inc. | 13,592 | +4,305 | $240.4K | +$71.9K | 46.4% |
| Quantinno Capital Management LP | 21,893 | +4,501 | $387.3K | +$71.6K | 25.9% |
| Fisher Asset Management, LLC | 74,557 | +4,875 | $1.3M | +$54.2K | 7.0% |
| UBS ASSET MANAGEMENT AMERICAS INC | 137,148 | +861 | $2.4M | -$47.5K | 0.6% |
| Legato Capital Management LLC | 80,115 | +4,480 | $1.4M | +$44.5K | 5.9% |
| Clearstead Advisors, LLC | 2,490 | +2,405 | $44.0K | +$42.5K | 2829.4% |
| Parkside Financial Bank & Trust | 2,408 | +2,357 | $42.6K | +$41.7K | 4621.6% |
| Allspring Global Investments Holdings, LLC | 49,547 | +4,352 | $859.6K | +$39.4K | 9.6% |
| Verity Asset Management, Inc. | 91,956 | +556 | $1.6M | -$32.2K | 0.6% |
| Integrated Quantitative Investments LLC | 19,536 | +1,936 | $345.6K | +$26.2K | 11.0% |
| GAMMA Investing LLC | 4,411 | +1,305 | $78.0K | +$21.7K | 42.0% |
| WEDGE CAPITAL MANAGEMENT L L P/NC | 120,897 | +1,882 | $2.1M | -$21.5K | 1.6% |
| Illumine Investment Management, LLC | 42,697 | +2,226 | $755.3K | +$20.7K | 5.5% |
| WINTON GROUP Ltd | 71,527 | +761 | $1.3M | -$19.1K | 1.1% |
| Farther Finance Advisors, LLC | 2,255 | +1,083 | $39.9K | +$18.6K | 92.4% |
| Swiss National Bank | 142,400 | +2,600 | $2.5M | -$18.3K | 1.9% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 728,568 | +19,356 | $12.9M | +$16.2K | 2.7% |
| KLP KAPITALFORVALTNING AS | 69,500 | +1,000 | $1.2M | -$13.8K | 1.4% |
| Salomon & Ludwin, LLC | 1,266 | +754 | $22.3K | +$12.9K | 147.3% |
| ADVISOR GROUP HOLDINGS, INC. | 707 | +600 | $12.5K | +$10.6K | 560.7% |
| Penserra Capital Management LLC | 4,260,259 | +601,806 | $75.4K | +$9.0K | 16.4% |
| Nilsine Partners, LLC | 52,393 | +1,819 | $926.8K | +$8.9K | 3.6% |
| ALPS ADVISORS INC | 26,355 | +221 | $466.2K | -$8.1K | 0.8% |
| GAMCO INVESTORS, INC. ET AL | 42,750 | +750 | $756.2K | -$6.1K | 1.8% |
| Rockefeller Capital Management L.P. | 976 | +342 | $17.3K | +$5.8K | 53.9% |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 150,466 | +3,219 | $2.7M | -$4.9K | 2.2% |
| Linden Thomas Advisory Services, LLC | 14,523 | +106 | $256.9K | -$4.8K | 0.7% |
| HUNTINGTON NATIONAL BANK | 1,529 | +266 | $27.0K | +$4.1K | 21.1% |
| OREGON PUBLIC EMPLOYEES RETIREMENT FUND | 16,418 | +200 | $290.4K | -$3.9K | 1.2% |
| BESSEMER GROUP INC | 171,223 | +170,847 | $3.0K | +$3.0K | 45438.0% |
| Sterling Capital Management LLC | 1,031 | +135 | $18.2K | +$2.0K | 15.1% |
| ProShare Advisors LLC | 13,983 | +431 | $247.4K | +$1.4K | 3.2% |
| NISA INVESTMENT ADVISORS, LLC | 1,415 | +100 | $25.0K | +$1.2K | 7.6% |
| Engineers Gate Manager LP | 39,850 | +1,060 | $704.9K | +$908 | 2.7% |
| MASSMUTUAL TRUST CO FSB/ADV | 1,601 | +1 | $28.3K | -$718 | 0.1% |
| CIBC Private Wealth Group, LLC | 1,666 | +76 | $29.5K | +$613 | 4.8% |
| DEUTSCHE BANK AG\ | 73,288 | +1,889 | $1.3M | +$572 | 2.6% |
| Parallel Advisors, LLC | 133 | +30 | $2.4K | +$484 | 29.1% |
| Marquette Asset Management, LLC | 217 | +22 | $3.8K | +$299 | 11.3% |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 11,578 | +10,636 | $204 | +$187 | 1129.1% |
| UMB Bank, n.a. | 501 | +22 | $8.9K | +$169 | 4.6% |
| MAI Capital Management | 345 | +1 | $6.1K | -$137 | 0.3% |
| State of Alaska, Department of Revenue | 48,292 | +8,773 | $853 | +$137 | 22.2% |
| ASSETMARK, INC | 164 | +10 | $2.9K | +$106 | 6.5% |
| HANTZ FINANCIAL SERVICES, INC. | 5,020 | +4,539 | $89 | +$80 | 943.6% |
| FIFTH THIRD BANCORP | 550 | +17 | $9.7K | +$56 | 3.2% |
| Covestor Ltd | 452 | +15 | $8 | +$1 | 3.4% |
Reduced(121)
Sold Out(35)
Top Holders by reported value
Ranked by the dollar value reported on the latest Form 13F. Share counts reflect long positions as of 2025-12-31.
| Manager | Shares | $ Value | Δ Shares | QoQ % |
|---|---|---|---|---|
| BlackRock, Inc. | 12,985,049 | $229.7M | -73,058 | -0.6% |
| VANGUARD GROUP INC | 7,241,762 | $128.1M | +6,692 | 0.1% |
| STATE STREET CORP | 3,116,155 | $55.1M | -172,032 | -5.2% |
| FIRST TRUST ADVISORS LP | 2,463,337 | $43.6M | +429,066 | 21.1% |
| Boston Trust Walden Corp | 2,440,649 | $43.2M | -199,343 | -7.5% |
| RENAISSANCE TECHNOLOGIES LLC | 2,134,734 | $37.8M | -252,053 | -10.6% |
| WELLINGTON MANAGEMENT GROUP LLP | 2,020,067 | $35.7M | -34,146 | -1.7% |
| GEODE CAPITAL MANAGEMENT, LLC | 1,777,631 | $31.5M | +10,052 | 0.6% |
| DIMENSIONAL FUND ADVISORS LP | 1,648,788 | $29.2M | +15,198 | 0.9% |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 1,448,929 | $25.6M | -1,250,700 | -46.3% |
| PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. | 1,435,626 | $25.4M | +4,268 | 0.3% |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 1,095,287 | $19.4M | -131,060 | -10.7% |
| GOLDMAN SACHS GROUP INC | 1,034,491 | $18.3M | +414,309 | 66.8% |
| Boston Partners | 840,140 | $14.8M | +840,140 | — |
| Invesco Ltd. | 836,178 | $14.8M | +95,148 | 12.8% |
| MORGAN STANLEY | 804,350 | $14.2M | +48,874 | 6.5% |
| TWO SIGMA INVESTMENTS, LP | 733,734 | $13.0M | +50,488 | 7.4% |
| BARCLAYS PLC | 670,109 | $13.0M | -695,150 | -50.9% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 728,568 | $12.9M | +19,356 | 2.7% |
| ROYCE & ASSOCIATES LP | 727,410 | $12.9M | +32,582 | 4.7% |
New & Closed Positions this quarter
Closed Positions
35 managers exited
Top five by prior-quarter value
Methodology
Form 13F is the SEC's quarterly disclosure for institutional investment managers exercising discretion over $100 million or more in qualifying U.S. equity securities. Managers must file within 45 days of each calendar quarter end, which is why holdings shown here reflect a snapshot at the period date — not real-time positioning.
Quarter-over-quarter deltas compare each manager's most recently reported share count for ATEN against its prior-quarter count. New positions are entries where the prior count was zero; closed positions are entries where the current count is zero. Amendments (13F-HR/A) replace prior filings for the same period.
Source: SEC EDGAR Form 13F (XML information tables). Dollar values are as reported by the manager and may use mid-quarter pricing conventions. CUSIP-to-ticker resolution is best-effort.