ADTN — Institutional owners (13F)

262 filers · $1.2B total · As of Sept. 30, 2026

Institutions that report holding this stock in their quarterly SEC Form 13F. Long positions only; a single filer may appear twice for separate option legs. Large offsetting put/call legs typically reflect market-making or hedged inventory, not directional conviction.

Institution Value Shares % of tracked 13F Type
BlackRock, Inc. $108,923,125 7,836,196 8.89% Shares
VANGUARD PORTFOLIO MANAGEMENT LLC $71,385,521 5,135,649 5.83% Shares
VANGUARD GROUP INC $71,158,031 8,188,496 5.81% Shares
VANGUARD CAPITAL MANAGEMENT LLC $48,792,767 3,510,271 3.98% Shares
STATE STREET CORP $42,850,837 3,082,794 3.50% Shares
ROYCE & ASSOCIATES LP $41,323,546 2,972,917 3.37% Shares
UBS Group AG $40,876,064 2,940,724 3.34% Shares
TWO SIGMA INVESTMENTS, LP $40,259,307 2,896,353 3.29% Shares
MILLENNIUM MANAGEMENT LLC $37,847,198 2,722,820 3.09% Shares
DNB Asset Management AS $36,409,507 2,619,389 2.97% Shares
JPMORGAN CHASE & CO $36,067,035 2,623,057 2.94% Shares
GEODE CAPITAL MANAGEMENT, LLC $27,222,874 1,958,052 2.22% Shares
MORGAN STANLEY $24,919,258 1,792,752 2.03% Shares
RENAISSANCE TECHNOLOGIES LLC $24,654,986 1,773,740 2.01% Shares
Boston Partners $22,721,824 1,651,038 1.85% Shares
Qube Research & Technologies Ltd $19,444,891 1,398,913 1.59% Shares
DIMENSIONAL FUND ADVISORS LP $18,989,752 1,366,243 1.55% Shares
First Eagle Investment Management, LLC $17,354,247 1,248,507 1.42% Shares
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC $15,276,364 1,099,019 1.25% Shares
D. E. Shaw & Co., Inc. $15,177,383 1,091,898 1.24% Shares
GOLDMAN SACHS GROUP INC $14,526,015 1,045,037 1.19% Shares
MARSHALL WACE, LLP $14,432,262 1,038,292 1.18% Shares
FMR LLC $14,055,605 1,011,195 1.15% Shares
Assenagon Asset Management S.A. $12,756,781 917,754 1.04% Shares
Divisar Capital Management LLC $11,836,211 851,526 0.97% Shares
FEDERATED HERMES, INC. $11,814,541 849,967 0.96% Shares
BANK OF AMERICA CORP /DE/ $11,751,353 845,421 0.96% Shares
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $10,937,535 786,873 0.89% Shares
Point72 Asset Management, L.P. $10,630,442 764,780 0.87% Shares
HEARTLAND ADVISORS INC $10,425,000 750,000 0.85% Shares
NORTHERN TRUST CORP $10,215,945 734,960 0.83% Shares
CHARLES SCHWAB INVESTMENT MANAGEMENT INC $9,925,545 714,068 0.81% Shares
Nuveen, LLC $9,732,043 700,147 0.79% Shares
Kovack Advisors, Inc. $9,496,305 696,210 0.78% Shares
AQR CAPITAL MANAGEMENT LLC $9,332,501 671,403 0.76% Shares
Connor, Clark & Lunn Investment Management Ltd. $8,744,754 629,119 0.71% Shares
WELLS FARGO & COMPANY/MN $8,690,912 625,245 0.71% Shares
Squarepoint Ops LLC $8,581,693 617,388 0.70% Shares
NORGES BANK $7,998,060 575,400 0.65% Shares
1492 Capital Management LLC $7,966,479 573,128 0.65% Shares
TUDOR INVESTMENT CORP ET AL $7,526,224 541,455 0.61% Shares
VANGUARD FIDUCIARY TRUST CO $7,518,190 540,877 0.61% Shares
Counterpoint Mutual Funds LLC $7,365,137 529,866 0.60% Shares
HENNESSY ADVISORS INC $7,315,570 526,300 0.60% Shares
ROYAL BANK OF CANADA $7,009,000 504,227 0.57% Shares
NOMURA HOLDINGS INC $6,982,276 502,322 0.57% Shares
WESTERLY CAPITAL MANAGEMENT, LLC $6,950,000 500,000 0.57% Shares
BARCLAYS PLC $6,660,840 479,197 0.54% Shares
Trexquant Investment LP $6,570,989 472,733 0.54% Shares
NEEDHAM INVESTMENT MANAGEMENT LLC $6,255,000 450,000 0.51% Shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP $6,186,890 445,100 0.51% Call option
SEI INVESTMENTS CO $5,605,207 403,253 0.46% Shares
Cubist Systematic Strategies, LLC $5,488,657 585,145 0.45% Shares
Y-Intercept (Hong Kong) Ltd $5,147,087 370,294 0.42% Shares
MACKENZIE FINANCIAL CORP $4,898,888 352,438 0.40% Shares
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND $4,588,390 330,100 0.37% Shares
JANE STREET GROUP, LLC $3,917,966 281,868 0.32% Shares
WHITE PINE CAPITAL LLC $3,879,101 279,072 0.32% Shares
Balyasny Asset Management L.P. $3,829,297 275,489 0.31% Shares
AMERIPRISE FINANCIAL INC $3,699,262 266,134 0.30% Shares
Bank of New York Mellon Corp $3,544,860 255,026 0.29% Shares
GRATIA CAPITAL, LLC $3,481,839 250,492 0.28% Shares
AMERICAN CENTURY COMPANIES INC $3,320,404 238,878 0.27% Shares
Invesco Ltd. $3,291,035 236,765 0.27% Shares
DEUTSCHE BANK AG\ $3,278,079 235,833 0.27% Shares
ALGERT GLOBAL LLC $3,171,424 228,160 0.26% Shares
NFJ INVESTMENT GROUP, LLC $2,896,941 208,413 0.24% Shares
Walleye Trading LLC $2,895,064 208,278 0.24% Shares
HERALD INVESTMENT MANAGEMENT Ltd $2,778,000 200,000 0.23% Shares
Engineers Gate Manager LP $2,761,888 198,697 0.23% Shares
STATE OF WISCONSIN INVESTMENT BOARD $2,676,139 192,528 0.22% Shares
Empowered Funds, LLC $2,566,023 184,606 0.21% Shares
JANE STREET GROUP, LLC $2,540,920 182,800 0.21% Call option
BNP PARIBAS FINANCIAL MARKETS $2,514,371 180,890 0.21% Shares
XTX Topco Ltd $2,482,165 178,573 0.20% Shares
LAZARD ASSET MANAGEMENT LLC $2,455,088 176,625 0.20% Shares
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $2,393,194 190,238 0.20% Shares
Inspire Investing, LLC $2,296,127 182,522 0.19% Shares
CITADEL ADVISORS LLC $2,061,370 148,300 0.17% Call option
RAYMOND JAMES FINANCIAL INC $2,032,807 146,245 0.17% Shares
Swiss National Bank $2,025,230 145,700 0.17% Shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP $1,947,849 140,133 0.16% Shares
GLOBEFLEX CAPITAL L P $1,842,111 132,526 0.15% Shares
Lido Advisors, LLC $1,798,035 129,355 0.15% Shares
Bienville Capital Management, LLC $1,768,733 127,247 0.14% Shares
Brevan Howard Capital Management LP $1,737,417 124,994 0.14% Shares
TITAN GLOBAL CAPITAL MANAGEMENT USA LLC $1,716,105 123,465 0.14% Shares
Lisanti Capital Growth, LLC $1,607,188 115,625 0.13% Shares
OCCUDO QUANTITATIVE STRATEGIES LP $1,602,475 115,286 0.13% Shares
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ $1,524,469 109,674 0.12% Shares
BNP PARIBAS ASSET MANAGEMENT Holding S.A. $1,485,257 106,853 0.12% Shares
RHUMBLINE ADVISERS $1,432,246 103,040 0.12% Shares
Man Group plc $1,428,392 102,762 0.12% Shares
Polymer Capital Management (US) LLC $1,408,987 101,366 0.12% Shares
Creative Planning $1,356,056 97,558 0.11% Shares
BURNEY CO/ $1,300,998 93,597 0.11% Shares
Integrated Quantitative Investments LLC $1,292,658 92,997 0.11% Shares
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main $1,250,999 90,000 0.10% Shares
SIMPLEX TRADING, LLC $1,186,017 85,325 0.10% Shares
Koesten, Hirschmann & Crabtree, INC. $1,179,471 84,854 0.10% Shares
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM $1,154,200 83,036 0.09% Shares
Skandinaviska Enskilda Banken AB (publ) $1,114,641 80,190 0.09% Shares
VICTORY CAPITAL MANAGEMENT INC $1,094,625 78,750 0.09% Shares
Russell Investments Group, Ltd. $1,087,382 78,229 0.09% Shares
Legal & General Group Plc $1,045,878 75,243 0.09% Shares
SUSQUEHANNA ADVISORS GROUP, INC. $1,026,793 73,870 0.08% Shares
Headlands Technologies LLC $1,005,776 72,358 0.08% Shares
Diametric Capital, LP $991,653 71,342 0.08% Shares
Kerrisdale Advisers, LLC $980,214 70,519 0.08% Shares
POLEN CAPITAL MANAGEMENT LLC $977,059 70,292 0.08% Shares
Knights of Columbus Asset Advisors LLC $949,148 68,284 0.08% Shares
CAXTON ASSOCIATES LLP $933,649 67,169 0.08% Shares
Dynamic Technology Lab Private Ltd $893,000 64,278 0.07% Shares
ALLIANCEBERNSTEIN L.P. $848,232 67,427 0.07% Shares
VOYA INVESTMENT MANAGEMENT LLC $821,143 59,075 0.07% Shares
CITADEL ADVISORS LLC $817,320 58,800 0.07% Put option
JACOBS LEVY EQUITY MANAGEMENT, INC $807,117 58,066 0.07% Shares
Quantinno Capital Management LP $794,038 57,125 0.06% Shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP $771,450 55,500 0.06% Put option
PDT Partners, LLC $745,610 53,641 0.06% Shares
CITIGROUP INC $697,446 50,176 0.06% Shares
VANGUARD ASSET MANAGEMENT, Ltd $647,045 46,550 0.05% Shares
Quantbot Technologies LP $639,748 46,025 0.05% Shares
MetLife Investment Management, LLC $625,722 45,016 0.05% Shares
Granahan Investment Management, LLC $622,136 44,758 0.05% Shares
OP Asset Management Ltd $585,273 42,106 0.05% Shares
Schonfeld Strategic Advisors LLC $581,269 41,818 0.05% Shares
Vanguard Global Advisers, LLC $503,500 36,223 0.04% Shares
State of Wyoming $503,361 36,213 0.04% Shares
QUADRANT CAPITAL GROUP LLC $496,369 35,710 0.04% Shares
TWO SIGMA ADVISERS, LP $495,330 57,000 0.04% Shares
Optimist Retirement Group LLC $494,854 35,601 0.04% Shares
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. $492,296 35,417 0.04% Shares
Campbell & CO Investment Adviser LLC $468,249 33,687 0.04% Shares
VIRTUS ADVISERS, LLC $460,910 33,159 0.04% Shares
HSBC HOLDINGS PLC $459,903 33,230 0.04% Shares
Numerai GP LLC $439,685 31,632 0.04% Shares
Edgestream Partners, L.P. $432,790 31,136 0.04% Shares
EntryPoint Capital, LLC $420,503 30,252 0.03% Shares
Worth Venture Partners, LLC $418,126 30,081 0.03% Shares
PANAGORA ASSET MANAGEMENT INC $414,456 29,817 0.03% Shares
Caitong International Asset Management Co., Ltd $413,178 29,725 0.03% Shares
JANUS HENDERSON GROUP PLC $412,731 32,900 0.03% Shares
CITADEL ADVISORS LLC $411,704 29,619 0.03% Shares
Waverly Advisors, LLC $395,761 28,472 0.03% Shares
VIRGINIA RETIREMENT SYSTEMS ET Al $390,590 28,100 0.03% Shares
Harvest Investment Services, LLC $383,223 27,570 0.03% Shares
Teza Capital Management LLC $378,205 27,209 0.03% Shares
MERCER GLOBAL ADVISORS INC /ADV $372,395 26,791 0.03% Shares
Zurcher Kantonalbank (Zurich Cantonalbank) $353,477 25,430 0.03% Shares
Magnetar Financial LLC $351,628 25,297 0.03% Shares
ExodusPoint Capital Management, LP $350,850 25,241 0.03% Shares
Mariner, LLC $338,542 24,359 0.03% Shares
Police & Firemen's Retirement System of New Jersey $336,658 24,220 0.03% Shares
IMC-Chicago, LLC $335,421 24,131 0.03% Shares
FRANKLIN RESOURCES INC $331,182 23,826 0.03% Shares
State of New Jersey Common Pension Fund D $326,428 23,484 0.03% Shares
Entropy Technologies, LP $322,522 23,203 0.03% Shares
LPL Financial LLC $319,525 22,987 0.03% Shares
Nebula Research & Development LLC $316,704 35,307 0.03% Shares
Advisory Services Network, LLC $310,331 22,326 0.03% Shares
STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM $309,956 22,299 0.03% Shares
CWM, LLC $307,216 24,421 0.03% Shares
NEW YORK STATE COMMON RETIREMENT FUND $303,826 21,858 0.02% Shares
DARK FOREST CAPITAL MANAGEMENT LP $294,402 21,180 0.02% Shares
MANUFACTURERS LIFE INSURANCE COMPANY, THE $284,505 20,468 0.02% Shares
SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC $284,158 20,443 0.02% Shares
ARIZONA STATE RETIREMENT SYSTEM $278,556 20,040 0.02% Shares
Corient Private Wealth LP $277,570 19,969 0.02% Shares
INTECH INVESTMENT MANAGEMENT LLC $267,380 19,236 0.02% Shares
Hillsdale Investment Management Inc. $264,795 19,050 0.02% Shares
Alpine Global Management, LLC $262,071 18,854 0.02% Shares
WEALTH ENHANCEMENT ADVISORY SERVICES, LLC $255,696 19,025 0.02% Shares
LOS ANGELES CAPITAL MANAGEMENT LLC $252,063 18,134 0.02% Shares
Cerity Partners LLC $247,226 17,786 0.02% Shares
Vanguard Investments Australia, Ltd. $238,677 17,171 0.02% Shares
STIFEL FINANCIAL CORP $238,371 17,149 0.02% Shares
BRC Group Holdings, Inc. $237,176 17,063 0.02% Shares
BTG Pactual Asset Management US LLC $233,770 16,818 0.02% Shares
KLP KAPITALFORVALTNING AS $232,130 16,700 0.02% Shares
Mitsubishi UFJ Trust & Banking Corp $228,947 16,471 0.02% Shares
Bayforest Capital Ltd $211,016 15,181 0.02% Shares
FOCUSED ALPHA, LLC $203,732 14,657 0.02% Shares
MIRABELLA FINANCIAL SERVICES LLP $203,190 14,618 0.02% Shares
IEQ CAPITAL, LLC $202,537 14,571 0.02% Shares
Amundi $188,067 13,530 0.02% Shares
PRUDENTIAL FINANCIAL INC $177,823 12,793 0.01% Shares
WOLVERINE TRADING, LLC $174,447 18,900 0.01% Call option
PRELUDE CAPITAL MANAGEMENT, LLC $169,830 12,218 0.01% Shares
VARCOV Co. $169,246 12,176 0.01% Shares
GTS SECURITIES LLC $161,893 11,647 0.01% Shares
Pictet Asset Management Holding SA $160,712 11,562 0.01% Shares
Vident Advisory, LLC $158,126 11,376 0.01% Shares
nVerses Capital, LLC $152,232 10,952 0.01% Shares
L2 Asset Management, LLC $142,394 10,244 0.01% Shares
ProShare Advisors LLC $139,973 10,070 0.01% Shares
Potomac Capital Management, Inc. $139,000 10,000 0.01% Shares
Point72 Asia (Singapore) Pte. Ltd. $134,992 14,391 0.01% Shares
Ameritas Investment Partners, Inc. $97,022 6,980 0.01% Shares
AlphaQuest LLC $89,281 10,274 0.01% Shares
ST GERMAIN D J CO INC $69,500 5,000 0.01% Shares
GAMMA Investing LLC $48,052 3,457 0.00% Shares
Parkside Financial Bank & Trust $45,009 3,238 0.00% Shares
Tower Research Capital LLC (TRC) $36,377 2,617 0.00% Shares
Persistent Asset Partners Ltd $28,287 2,035 0.00% Shares
OSAIC HOLDINGS, INC. $26,119 1,879 0.00% Shares
Allworth Financial LP $23,978 1,725 0.00% Shares
US BANCORP \DE\ $22,227 1,599 0.00% Shares
Arax Advisory Partners $21,462 1,544 0.00% Shares
SIGNATUREFD, LLC $20,086 1,445 0.00% Shares
FIFTH THIRD BANCORP $18,498 1,331 0.00% Shares
NISA INVESTMENT ADVISORS, LLC $17,542 1,262 0.00% Shares
Point72 Europe (London) LLP $15,071 1,607 0.00% Shares
ROTHSCHILD INVESTMENT LLC $11,023 793 0.00% Shares
COMERICA BANK $10,723 1,234 0.00% Shares
PNC Financial Services Group, Inc. $9,062 652 0.00% Shares
EverSource Wealth Advisors, LLC $8,396 604 0.00% Shares
Tieton Capital Management, LLC $7,931 570,542 0.00% Shares
HRT FINANCIAL LP $7,800 561,192 0.00% Shares
JONES FINANCIAL COMPANIES LLLP $7,444 551 0.00% Shares
Parallel Advisors, LLC $6,519 469 0.00% Shares
Smartleaf Asset Management LLC $6,064 441 0.00% Shares
Essential Partners LLC $5,588 402 0.00% Shares
Optiver Holding B.V. $5,463 393 0.00% Shares
Farther Finance Advisors, LLC $4,473 322 0.00% Shares
Versant Capital Management, Inc $4,238 620 0.00% Shares
IFP Advisors, Inc $4,170 300 0.00% Shares
Johnson Financial Group, Inc. $4,115 296 0.00% Shares
Sterling Capital Management LLC $3,753 270 0.00% Shares
SJS Investment Consulting Inc. $3,587 258 0.00% Shares
ACADIAN ASSET MANAGEMENT LLC $3,426 247,014 0.00% Shares
SG Americas Securities, LLC $3,287 236,510 0.00% Shares
Janney Montgomery Scott LLC $3,199 230,160 0.00% Shares
True Wealth Design, LLC $2,697 194 0.00% Shares
Clearstead Advisors, LLC $2,114 152 0.00% Shares
PRICE T ROWE ASSOCIATES INC /MD/ $1,927 138,630 0.00% Shares
BARROW HANLEY MEWHINNEY & STRAUSS LLC $1,821 131 0.00% Shares
Pinnacle Wealth Planning Services, Inc. $1,765 127 0.00% Shares
ASSETMARK, INC $1,682 121 0.00% Shares
Lindbrook Capital, LLC $1,639 188 0.00% Shares
N.E.W. Advisory Services LLC $1,390 100 0.00% Shares
NFSG Corp $1,390 100 0.00% Shares
Keating Financial Advisory Services, Inc. $1,223 88 0.00% Shares
Private Wealth Management Group, LLC $1,154 83 0.00% Shares
HOLLENCREST CAPITAL MANAGEMENT $848 61 0.00% Shares
SBI Securities Co., Ltd. $723 52 0.00% Shares
C M BIDWELL & ASSOCIATES LTD $695 50 0.00% Shares
GSA CAPITAL PARTNERS LLP $692 49,752 0.00% Shares
Torren Management, LLC $579 46 0.00% Shares
Quarry LP $570 41 0.00% Shares
Bruce G. Allen Investments, LLC $459 33 0.00% Shares
Physician Wealth Advisors, Inc. $404 29 0.00% Shares
JPL Wealth Management, LLC $265 19 0.00% Shares
Silver Grove Financial Group, Inc. $195 14 0.00% Shares
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO $158 11,333 0.00% Shares
Pacer Advisors, Inc. $124 8,951 0.00% Shares
Larson Financial Group LLC $111 8 0.00% Shares
NATIONAL BANK OF CANADA /FI/ $111 8 0.00% Shares
State of Alaska, Department of Revenue $53 3,872 0.00% Shares
Covestor Ltd $22 1,572 0.00% Shares
HUNTINGTON NATIONAL BANK $14 1 0.00% Shares
Kilter Group LLC $14 1 0.00% Shares