ARDX — Institutional owners (13F)

271 filers · $1.1B total · As of June 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. $119,873,615 23,504,630 11.30% Shares
VANGUARD GROUP INC $110,650,386 18,979,483 10.43% Shares
Rubric Capital Management LP $82,633,770 16,202,700 7.79% Shares
MILLENNIUM MANAGEMENT LLC $70,893,942 13,900,773 6.68% Shares
STATE STREET CORP $68,116,253 13,356,128 6.42% Shares
VANGUARD CAPITAL MANAGEMENT LLC $53,404,619 10,471,494 5.03% Shares
JANUS HENDERSON GROUP PLC $50,143,692 8,371,234 4.73% Shares
NOMURA ASSET MANAGEMENT INTERNATIONAL INC. $48,688,000 9,546,732 4.59% Shares
VANGUARD PORTFOLIO MANAGEMENT LLC $40,936,547 8,026,774 3.86% Shares
GEODE CAPITAL MANAGEMENT, LLC $32,655,404 6,401,736 3.08% Shares
TWO SIGMA INVESTMENTS, LP $26,570,097 5,209,823 2.50% Shares
Nuveen, LLC $20,385,205 3,997,099 1.92% Shares
GOLDMAN SACHS GROUP INC $18,793,673 3,685,034 1.77% Shares
AIGH Capital Management LLC $16,320,000 3,200,000 1.54% Shares
MORGAN STANLEY $12,186,687 2,389,546 1.15% Shares
AQR CAPITAL MANAGEMENT LLC $11,812,722 2,316,220 1.11% Shares
NORTHERN TRUST CORP $11,628,729 2,280,143 1.10% Shares
Rock Springs Capital Management LP $11,433,022 2,241,769 1.08% Shares
CHARLES SCHWAB INVESTMENT MANAGEMENT INC $11,279,976 2,211,760 1.06% Shares
BANK OF AMERICA CORP /DE/ $11,033,851 2,163,500 1.04% Shares
ORACLE INVESTMENT MANAGEMENT INC $10,917,398 1,872,624 1.03% Shares
Qube Research & Technologies Ltd $10,662,443 2,090,675 1.00% Shares
JONES FINANCIAL COMPANIES LLLP $9,800,923 1,765,932 0.92% Shares
VANGUARD FIDUCIARY TRUST CO $8,949,577 1,754,819 0.84% Shares
Eversept Partners, LP $8,559,560 1,678,345 0.81% Shares
J. Goldman & Co LP $8,057,123 1,579,828 0.76% Shares
TWO SIGMA ADVISERS, LP $7,862,921 1,348,700 0.74% Shares
Invesco Ltd. $6,981,226 1,368,868 0.66% Shares
FIRST TRUST ADVISORS LP $6,638,282 1,301,624 0.63% Shares
SCHRODER INVESTMENT MANAGEMENT GROUP $6,073,275 1,161,238 0.57% Shares
CITADEL ADVISORS LLC $5,253,887 1,030,174 0.50% Shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP $4,671,789 916,037 0.44% Shares
RENAISSANCE TECHNOLOGIES LLC $4,552,224 892,593 0.43% Shares
PANAGORA ASSET MANAGEMENT INC $4,543,814 890,944 0.43% Shares
BNP PARIBAS FINANCIAL MARKETS $4,132,642 810,322 0.39% Shares
DEUTSCHE BANK AG\ $3,931,642 770,910 0.37% Shares
ExodusPoint Capital Management, LP $3,839,907 752,923 0.36% Shares
Bank of New York Mellon Corp $3,823,350 749,676 0.36% Shares
Squarepoint Ops LLC $3,647,836 715,262 0.34% Shares
SECTOR GAMMA AS $3,502,904 686,844 0.33% Shares
Trexquant Investment LP $3,368,989 660,586 0.32% Shares
Redmile Group, LLC $3,272,925 641,750 0.31% Shares
Cubist Systematic Strategies, LLC $3,139,766 569,831 0.30% Shares
RAYMOND JAMES FINANCIAL INC $2,869,627 562,672 0.27% Shares
UBS Group AG $2,813,778 551,721 0.27% Shares
Jump Financial, LLC $2,738,604 536,981 0.26% Shares
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $2,639,638 440,674 0.25% Shares
MACKENZIE FINANCIAL CORP $2,417,879 474,094 0.23% Shares
Swiss National Bank $2,384,760 467,600 0.22% Shares
HUSSMAN STRATEGIC ADVISORS, INC. $2,142,000 420,000 0.20% Shares
Universal- Beteiligungs- und Servicegesellschaft mbH $2,098,069 411,386 0.20% Shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP $2,033,880 398,800 0.19% Put option
Clay Northam Wealth Management, LLC $1,703,987 334,115 0.16% Shares
CITIGROUP INC $1,586,207 311,021 0.15% Shares
ALLIANCEBERNSTEIN L.P. $1,585,972 264,770 0.15% Shares
Raiffeisen Bank International AG $1,569,000 300,000 0.15% Shares
RHUMBLINE ADVISERS $1,559,570 305,800 0.15% Shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP $1,558,560 305,600 0.15% Call option
DIADEMA PARTNERS LP $1,545,428 303,025 0.15% Shares
CITADEL ADVISORS LLC $1,545,300 303,000 0.15% Put option
MILLENNIUM MANAGEMENT LLC $1,530,000 300,000 0.14% Call option
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM $1,507,739 295,635 0.14% Shares
Y-Intercept (Hong Kong) Ltd $1,480,295 290,254 0.14% Shares
WELLS FARGO & COMPANY/MN $1,430,397 280,470 0.13% Shares
Knott David M Jr $1,342,157 263,168 0.13% Shares
Freestone Grove Partners LP $1,293,829 253,692 0.12% Shares
JPMORGAN CHASE & CO $1,236,942 225,800 0.12% Shares
IEQ CAPITAL, LLC $1,228,070 240,798 0.12% Shares
Headlands Technologies LLC $1,228,060 240,796 0.12% Shares
Pekin Hardy Strauss, Inc. $1,154,640 226,400 0.11% Shares
LPL Financial LLC $1,074,121 210,612 0.10% Shares
Rafferty Asset Management, LLC $1,051,431 206,163 0.10% Shares
Stonepine Capital Management, LLC $1,050,000 150,000 0.10% Call option
JANE STREET GROUP, LLC $1,049,070 205,700 0.10% Put option
Virtus Investment Advisers, LLC $1,042,302 204,373 0.10% Shares
FRANKLIN RESOURCES INC $1,027,370 201,445 0.10% Shares
Caption Management, LLC $1,020,000 200,000 0.10% Put option
MONIMUS CAPITAL MANAGEMENT, LP $997,616 195,611 0.09% Shares
Legal & General Group Plc $996,867 195,464 0.09% Shares
Carrera Capital Advisors $995,311 195,159 0.09% Shares
JANE STREET GROUP, LLC $875,160 171,600 0.08% Call option
Walleye Capital LLC $872,171 171,014 0.08% Shares
VANGUARD ASSET MANAGEMENT, Ltd $849,257 166,521 0.08% Shares
SEI INVESTMENTS CO $775,504 152,059 0.07% Shares
SIMPLEX TRADING, LLC $772,277 151,427 0.07% Shares
Caption Management, LLC $765,000 150,000 0.07% Call option
STATE OF WISCONSIN INVESTMENT BOARD $731,468 143,425 0.07% Shares
MetLife Investment Management, LLC $727,525 142,652 0.07% Shares
CWM, LLC $703,406 117,430 0.07% Shares
PFG Investments, LLC $702,066 137,660 0.07% Shares
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. $699,324 136,512 0.07% Shares
Caption Management, LLC $663,000 130,000 0.06% Shares
LOS ANGELES CAPITAL MANAGEMENT LLC $659,772 129,367 0.06% Shares
Lion Point Capital, LP $656,115 128,650 0.06% Shares
SECTORAL ASSET MANAGEMENT INC $624,209 122,394 0.06% Shares
PRUDENTIAL FINANCIAL INC $590,529 115,790 0.06% Shares
Vanguard Global Advisers, LLC $575,810 112,904 0.05% Shares
GROUP ONE TRADING LLC $540,105 105,903 0.05% Shares
PROFUND ADVISORS LLC $537,224 105,338 0.05% Shares
MANUFACTURERS LIFE INSURANCE COMPANY, THE $535,102 104,922 0.05% Shares
Zurcher Kantonalbank (Zurich Cantonalbank) $527,819 103,494 0.05% Shares
Russell Investments Group, Ltd. $523,349 102,617 0.05% Shares
Inspire Investing, LLC $520,040 86,818 0.05% Shares
HSBC HOLDINGS PLC $509,286 100,550 0.05% Shares
DIVERSIFIED TRUST CO $495,959 97,247 0.05% Shares
WELLINGTON MANAGEMENT GROUP LLP $460,826 90,358 0.04% Shares
WEALTH ENHANCEMENT ADVISORY SERVICES, LLC $451,825 85,573 0.04% Shares
KORNITZER CAPITAL MANAGEMENT INC /KS $449,009 88,041 0.04% Shares
CITADEL ADVISORS LLC $442,680 86,800 0.04% Call option
BARCLAYS PLC $436,443 85,577 0.04% Shares
NATIXIS $398,856 78,207 0.04% Shares
Persistent Asset Partners Ltd $394,592 77,371 0.04% Shares
Arax Advisory Partners $392,348 76,931 0.04% Shares
Balyasny Asset Management L.P. $390,650 76,598 0.04% Shares
NEW YORK STATE COMMON RETIREMENT FUND $385,274 75,544 0.04% Shares
State of New Jersey Common Pension Fund D $384,203 75,334 0.04% Shares
MARTINGALE ASSET MANAGEMENT L P $377,431 74,006 0.04% Shares
Police & Firemen's Retirement System of New Jersey $369,490 72,449 0.03% Shares
MILLENNIUM MANAGEMENT LLC $365,670 71,700 0.03% Put option
Cerity Partners LLC $364,324 71,436 0.03% Shares
FMR LLC $354,088 69,429 0.03% Shares
INTECH INVESTMENT MANAGEMENT LLC $350,314 68,689 0.03% Shares
STRS OHIO $344,250 67,500 0.03% Shares
WOLVERINE TRADING, LLC $333,713 59,274 0.03% Shares
Tyler-Stone Wealth Management $332,612 84,850 0.03% Shares
ARIZONA STATE RETIREMENT SYSTEM $327,864 64,287 0.03% Shares
EntryPoint Capital, LLC $326,543 64,028 0.03% Shares
MERCER GLOBAL ADVISORS INC /ADV $322,534 63,242 0.03% Shares
Vanguard Investments Australia, Ltd. $311,528 61,084 0.03% Shares
STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM $309,978 60,780 0.03% Shares
PSP Research LLC $306,000 60,000 0.03% Shares
WOLVERINE TRADING, LLC $297,827 52,900 0.03% Put option
Root Financial Partners, LLC $295,984 58,036 0.03% Shares
Rockefeller Capital Management L.P. $294,275 57,701 0.03% Shares
MARSHALL WACE, LLP $288,124 56,495 0.03% Shares
CANADA PENSION PLAN INVESTMENT BOARD $275,400 54,000 0.03% Shares
Mariner, LLC $275,296 53,978 0.03% Shares
KLP KAPITALFORVALTNING AS $263,160 51,600 0.02% Shares
RAYMOND JAMES FINANCIAL INC $250,000 50,000 0.02% Call option
Quantinno Capital Management LP $244,402 47,922 0.02% Shares
VOYA INVESTMENT MANAGEMENT LLC $241,480 47,349 0.02% Shares
CenterBook Partners LP $237,680 46,604 0.02% Shares
Blueshift Asset Management, LLC $229,984 45,095 0.02% Shares
Creative Planning $228,276 44,760 0.02% Shares
Chicago Partners Investment Group LLC $221,062 43,092 0.02% Shares
LAZARD ASSET MANAGEMENT LLC $210,079 41,192 0.02% Shares
GK Wealth Management LLC $208,427 40,868 0.02% Shares
Pictet Asset Management Holding SA $207,111 40,610 0.02% Shares
ProShare Advisors LLC $204,550 40,108 0.02% Shares
CRUX WEALTH ADVISORS $200,675 39,348 0.02% Shares
China Universal Asset Management Co., Ltd. $200,507 39,315 0.02% Shares
Mitsubishi UFJ Trust & Banking Corp $194,060 38,051 0.02% Shares
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ $187,486 36,762 0.02% Shares
IMC-Chicago, LLC $184,865 36,248 0.02% Shares
COMMONWEALTH EQUITY SERVICES, LLC $181,480 35,585 0.02% Shares
V. M. MANNING & CO., INC. $176,384 34,585 0.02% Shares
WOLVERINE TRADING, LLC $171,715 30,500 0.02% Call option
OXFORD ASSET MANAGEMENT LLP $164,735 32,301 0.02% Shares
Focus Partners Wealth $148,762 29,169 0.01% Shares
E Fund Management Co., Ltd. $148,252 29,069 0.01% Shares
STIFEL FINANCIAL CORP $142,571 27,955 0.01% Shares
Merit Financial Group, LLC $140,958 27,639 0.01% Shares
VICTORY CAPITAL MANAGEMENT INC $139,358 27,325 0.01% Shares
TEACHER RETIREMENT SYSTEM OF TEXAS $138,934 27,242 0.01% Shares
BLAIR WILLIAM & CO/IL $135,839 26,635 0.01% Shares
XTX Topco Ltd $130,310 25,551 0.01% Shares
Pallas Capital Advisors LLC $125,909 24,688 0.01% Shares
LANDSCAPE CAPITAL MANAGEMENT, L.L.C. $125,619 24,631 0.01% Shares
NewEdge Advisors, LLC $120,992 23,724 0.01% Shares
XPONANCE LLC $119,666 23,464 0.01% Shares
CAPTRUST FINANCIAL ADVISORS $119,008 23,335 0.01% Shares
Ameritas Investment Partners, Inc. $113,133 22,183 0.01% Shares
DCF Advisers, LLC $112,200 22,000 0.01% Shares
Sargent Investment Group, LLC $109,650 21,500 0.01% Shares
PRINCIPAL FINANCIAL GROUP INC $95,314 18,689 0.01% Shares
Magnetar Financial LLC $92,514 18,140 0.01% Shares
CIBC WORLD MARKETS CORP $92,429 15,854 0.01% Shares
Tower Research Capital LLC (TRC) $92,091 18,057 0.01% Shares
OSAIC HOLDINGS, INC. $90,513 17,748 0.01% Shares
Ensign Peak Advisors, Inc $90,015 17,650 0.01% Shares
Jain Global LLC $88,230 17,300 0.01% Shares
Campbell & CO Investment Adviser LLC $83,135 16,301 0.01% Shares
Engineers Gate Manager LP $82,686 16,213 0.01% Shares
Swiss Life Asset Management Ltd $82,559 16,188 0.01% Shares
Orion Portfolio Solutions, LLC $82,100 16,721 0.01% Shares
State of Wyoming $76,709 15,041 0.01% Shares
CreativeOne Wealth, LLC $75,225 14,750 0.01% Shares
Centiva Capital, LP $74,577 14,623 0.01% Shares
BRIGHTON JONES LLC $72,936 14,301 0.01% Shares
Amundi $72,838 14,282 0.01% Shares
ROYAL BANK OF CANADA $72,000 14,154 0.01% Shares
Integrated Wealth Concepts LLC $71,176 13,956 0.01% Shares
CIBC Bancorp USA Inc. $68,825 13,495 0.01% Shares
D. E. Shaw & Co., Inc. $66,713 13,081 0.01% Shares
AMERIPRISE FINANCIAL INC $66,418 13,023 0.01% Shares
Sheets Smith Investment Management $62,775 11,393 0.01% Shares
HUNTINGTON NATIONAL BANK $61,200 12,000 0.01% Shares
PVG ASSET MANAGEMENT CORP $58,104 11,393 0.01% Shares
ALLSTATE CORP $57,554 11,285 0.01% Shares
Bayesian Capital Management, LP $56,610 11,100 0.01% Shares
Mirae Asset Global Investments Co., Ltd. $56,345 11,048 0.01% Shares
ADAR1 Capital Management, LLC $56,100 11,000 0.01% Shares
Cetera Investment Advisers $55,406 10,864 0.01% Shares
SBI Securities Co., Ltd. $54,060 10,600 0.01% Shares
SCS Capital Management LLC $51,882 10,173 0.00% Shares
NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO $35,302 6,922 0.00% Shares
EverSource Wealth Advisors, LLC $27,683 5,428 0.00% Shares
GF FUND MANAGEMENT CO. LTD. $26,469 5,190 0.00% Shares
HighMark Wealth Management LLC $25,423 4,985 0.00% Shares
Point72 (DIFC) Ltd $25,404 4,610 0.00% Shares
Allworth Financial LP $20,865 4,091 0.00% Shares
NISA INVESTMENT ADVISORS, LLC $18,778 3,682 0.00% Shares
BNP PARIBAS ASSET MANAGEMENT Holding S.A. $18,426 3,613 0.00% Shares
EXCHANGE TRADED CONCEPTS, LLC $17,564 3,444 0.00% Shares
Essential Partners LLC $14,408 2,825 0.00% Shares
IFP Advisors, Inc $11,812 2,316 0.00% Shares
GAMMA Investing LLC $9,415 1,846 0.00% Shares
Steward Partners Investment Advisory, LLC $8,675 1,701 0.00% Shares
FIRST HORIZON CORP $8,420 1,651 0.00% Shares
WEBSTER BANK, N. A. $7,650 1,500 0.00% Shares
ROTHSCHILD INVESTMENT LLC $6,197 1,215 0.00% Shares
COMERICA BANK $5,742 985 0.00% Shares
FIFTH THIRD BANCORP $4,988 978 0.00% Shares
Sterling Capital Management LLC $4,376 858 0.00% Shares
Parallel Advisors, LLC $4,259 835 0.00% Shares
Tradewinds Capital Management, LLC $4,162 816 0.00% Shares
True Wealth Design, LLC $3,943 773 0.00% Shares
Fortitude Family Office, LLC $3,891 763 0.00% Shares
BROWN BROTHERS HARRIMAN & CO $3,376 662 0.00% Shares
Larson Financial Group LLC $2,820 553 0.00% Shares
Krensavage Asset Management, LLC $2,726 534,523 0.00% Shares
Spire Wealth Management $2,550 500 0.00% Shares
Truvestments Capital LLC $2,525 495 0.00% Shares
Smartleaf Asset Management LLC $2,359 451 0.00% Shares
Optiver Holding B.V. $2,285 448 0.00% Shares
Global Retirement Partners, LLC $2,147 421 0.00% Shares
Hilton Head Capital Partners, LLC $2,086 409 0.00% Shares
PRICE T ROWE ASSOCIATES INC /MD/ $1,835 359,635 0.00% Shares
Farther Finance Advisors, LLC $1,651 323 0.00% Shares
Lindbrook Capital, LLC $1,650 336 0.00% Shares
PNC Financial Services Group, Inc. $1,627 319 0.00% Shares
Quarry LP $1,494 293 0.00% Shares
Caitong International Asset Management Co., Ltd $1,489 292 0.00% Shares
Parkside Financial Bank & Trust $1,219 239 0.00% Shares
Thrivent Financial for Lutherans $1,074 210,555 0.00% Shares
THOMPSON INVESTMENT MANAGEMENT, INC. $943 185 0.00% Shares
DekaBank Deutsche Girozentrale $591 100,000 0.00% Shares
JPL Wealth Management, LLC $561 110 0.00% Shares
SJS Investment Consulting Inc. $561 110 0.00% Shares
SIGNATUREFD, LLC $530 104 0.00% Shares
SG Americas Securities, LLC $526 103,174 0.00% Shares
Gen-Wealth Partners Inc $510 100 0.00% Shares
ACADIAN ASSET MANAGEMENT LLC $497 97,921 0.00% Shares
Ares Financial Consulting, LLC $459 90 0.00% Shares
GSA CAPITAL PARTNERS LLP $366 71,826 0.00% Shares
US BANCORP \DE\ $296 58 0.00% Shares
ARMSTRONG ADVISORY GROUP, INC $281 55 0.00% Shares
Strengthening Families & Communities, LLC $163 32 0.00% Shares
CANADA LIFE ASSURANCE Co $134 26,233 0.00% Shares
Wealth Enhancement Trust Services, Inc. $133 26 0.00% Shares
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO $125 24,496 0.00% Shares
NATIONAL BANK OF CANADA /FI/ $122 24 0.00% Shares
Clearstead Advisors, LLC $72 14 0.00% Shares
Cambridge Investment Research Advisors, Inc. $62 12,146 0.00% Shares
KBC Group NV $53 10,361 0.00% Shares
Concord Wealth Partners $41 8 0.00% Shares
Hughes Financial Services, LLC $36 7 0.00% Shares
TFC Financial Management, Inc. $36 7 0.00% Shares
Pacer Advisors, Inc. $18 3,443 0.00% Shares
BESSEMER GROUP INC $1 105 0.00% Shares
Covestor Ltd $0 53 0.00% Shares