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Disclosery

ARGX ARGENX SE

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ADR (ADR), issuer CIK 1697862

469 managers (477 13F filers) reported a position in ARGX shares at 2026-03-31, 28,815,747 shares in all. 57 filers opened a position and 89 filers sold out during the quarter.

Managers
469
13F filers
477
New
57
Added
178
Reduced
171
Sold out
89
Shares held by filers
28,815,747

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
FMR LLCin group FMR LLC4,991,034$3.64B0.19%-601,28513F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/3,374,955$2.46B0.28%+12,63113F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson2,541,732$1.85B0.88%+83,56813F-HR/ATimelineGroup
Capital World Investors2,256,216$1.65B0.22%+339,98213F-HRTimeline
Artisan Partners Limited Partnership1,467,982$1.07B1.75%-288,96013F-HRTimeline
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…1,021,457$746M0.14%+342,22113F-HRTimelineGroup
Avoro Capital Advisors LLC1,000,000$730M7.19%+10,00013F-HRTimeline
BlackRock, Inc.in group BlackRock, Inc.808,337$590M0.01%+72,73913F-HRTimelineGroup
RTW INVESTMENTS, LP709,446$518M5.16%+35,94913F-HRTimeline
Invesco Ltd.in group Invesco Ltd.594,697$434M0.04%+178,28913F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY560,711$409M0.02%+41,85913F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.422,304$355M0.11%+8,12213F-HRTimeline
Franklin Resourcesgroup of 2 filers holding464,849$339M-286,616Timeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/400,117$292M0.02%-65913F-HRTimelineGroup
SANDS CAPITAL MANAGEMENT, LLC340,285$248M0.97%-16,58513F-HRTimeline
Bellevue Group AGin group Bellevue Group AG313,000$229M5.44%-148,85413F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO286,966$210M0.19%-43,54013F-HRTimelineGroup
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC266,067$194M0.64%+42,40113F-HRTimeline
JENNISON ASSOCIATES LLC237,468$173M0.12%+7,70713F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC231,985$169M0.02%+64,77913F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC219,126$160M0.11%-131,72513F-HRTimelineGroup
Fiera Capital Corpin group Fiera Capital Corp217,198$159M0.54%-8,77313F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC215,910$158M0.04%+28,77113F-HR/ATimelineGroup
Allspring Global Investments Holdings, …in group Allspring Global Investments …175,311$130M0.22%+2,57913F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS177,836$130M0.09%+107,09213F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC173,700$127M0.07%-47,34813F-HRTimelineGroup
Checkpoint Capital L.P.153,000$112M40.1%+11,00013F-HRTimeline
LORD, ABBETT & CO. LLC152,083$111M0.36%-51,78113F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc150,850$110M0.03%+6,49513F-HRTimelineGroup
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…148,306$108M0.11%-4,90513F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\139,381$102M0.03%+4,67113F-HRTimelineGroup
BAMCO INC /NY/in group Baron Capital138,648$101M0.31%-15,07113F-HRTimelineGroup
ORBIMED ADVISORS LLCin group ORBIMED ADVISORS LLC136,900$100M2.18%-9,10013F-HRTimelineGroup
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC133,347$97.4M0.16%+31713F-HRTimelineGroup
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …129,147$94.3M0.11%+13,78913F-HRTimelineGroup
EVENTIDE ASSET MANAGEMENT, LLC125,657$91.7M1.52%+4,43613F-HRTimeline
AGF MANAGEMENT LTDin group AGF MANAGEMENT LTD125,069$91.3M0.41%+37813F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP109,121$79.7M0.07%-149,43513F-HRTimelineGroup
NOMURA ASSET MANAGEMENT CO LTDgroup of 3 filers holding107,680$78.6M+12,704Timeline
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP107,195$78.3M0.06%+53,29313F-HRTimelineGroup
PINEBRIDGE INVESTMENTS LLC103,812$75.8M0.64%+31,77213F-HRTimeline
Rock Springs Capital Management LP98,500$71.9M4.24%-4,75013F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.95,253$69.6M0.11%-11,51713F-HRTimelineGroup
ADAGE CAPITAL PARTNERS GP, L.L.C.in group ADAGE CAPITAL PARTNERS GP, L.…90,000$65.7M0.1%new13F-HRTimelineGroup
BANK OF MONTREAL /CAN/in group BANK OF MONTREAL /CAN/85,333$62.3M0.03%+68,95613F-HRTimelineGroup
BRAIDWELL LP84,939$62M2.07%+53,93213F-HRTimeline
1832 Asset Management L.P.84,200$61.5M0.08%-26,50013F-HRTimeline
TimesSquare Capital Management, LLC83,117$60.7M1.03%-25,39213F-HRTimeline
Aberdeen Group plcin group Aberdeen Group plc82,106$60M0.1%+29,75913F-HRTimelineGroup
TD Asset Management Inc80,824$59M0.05%-20,69913F-HRTimeline
Eagle Health Investments LP76,336$55.7M11.7%+13,60613F-HRTimeline
Public Sector Pension Investment Board73,300$53.5M0.17%+36,70013F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC72,365$52.8M0.04%+11,90713F-HRTimelineGroup
Ensign Peak Advisors, Inc71,598$52.3M0.1%-18,85413F-HR/ATimeline
PGGM Investments71,514$52.2M0.92%+16,68413F-HRTimeline
Nuveen, LLCin group TIAA66,241$48.4M0.01%013F-HRTimelineGroup
BESSEMER GROUP INCin group BESSEMER GROUP INC64,251$46.9M0.07%+1,71413F-HRTimelineGroup
ENVESTNET ASSET MANAGEMENT INCgroup of 2 filers holding61,742$45.1M-19,083Timeline
Amundiin group Amundi61,433$44.9M0.01%+18,94813F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding59,153$43.2M-22,736Timeline
Life Cycle Investment Partners Ltd58,867$43M0.27%+13,04113F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP58,706$42.9M0.01%-5,53813F-HRTimelineGroup
Handelsbanken Fonder AB54,926$40.1M0.13%+2,24813F-HRTimeline
Candriam S.C.A.54,148$39.5M0.21%+5,40713F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.52,122$38.1M0.03%+6,58913F-HRTimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …49,330$36M0.03%-8,07813F-HRTimelineGroup
VAN ECK ASSOCIATES CORPin group VAN ECK ASSOCIATES CORP40,397$29.5M0.02%+5,86213F-HRTimelineGroup
Natixis Investment Managersgroup of 2 filers holding40,213$29.4M+17,713Timeline
NEW YORK STATE COMMON RETIREMENT FUND39,437$28.8M0.04%-4,59013F-HRTimeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP38,794$28.3M0.01%+1,97713F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC38,438$28.1M0.03%+9,95313F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN38,104$27.8M0.01%-16,28613F-HR/ATimelineGroup
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC36,802$26.9M0.01%-20,68713F-HRTimelineGroup
Patient Square Capital LP36,718$26.8M4.76%+10,71813F-HRTimeline
Davern Capital Partners, LP35,045$25.6M7.02%-64013F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA32,917$24M<0.01%-2,74313F-HRTimelineGroup
VICTORY CAPITAL MANAGEMENT INC32,255$23.6M0.02%-1,59213F-HRTimeline
Tri Locum Partners LP31,635$23.1M3.24%-6,01813F-HRTimeline
Jefferies Financial Group Inc.in group Jefferies Financial Group Inc.30,005$21.9M0.27%+513F-HRTimelineGroup
Hudson Bay Capital Management LPin group Hudson Bay Capital Management…30,000$21.9M0.13%+8,17813F-HRTimelineGroup
Artia Global Partners LP29,739$21.7M4.9%-34,96013F-HRTimeline
Perpetual Ltdin group Perpetual Ltd28,359$20.7M0.32%-2,59113F-HRTimelineGroup
Jones Hill Capital LP25,995$19M4.07%13F-HRTimeline
Qube Research & Technologies Ltd25,536$18.6M0.03%+3,08513F-HRTimeline
BAKER BROS. ADVISORS LPin group BAKER BROS. ADVISORS LP25,174$18.4M0.11%013F-HRTimelineGroup
ODDO BHF ASSET MANAGEMENT SAS25,009$18.3M0.72%+1,53613F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC23,569$17.2M<0.01%-12613F-HRTimelineGroup
LMR Partners LLPin group LMR Partners LLP23,488$17.2M0.16%+19,68213F-HRTimelineGroup
LPL Financial LLC23,247$17M<0.01%-2,40913F-HRTimeline
VOLORIDGE INVESTMENT MANAGEMENT, LLC22,651$16.5M0.07%+8,53913F-HRTimeline
BLAIR WILLIAM & CO/IL22,407$16.4M0.05%-3,93313F-HRTimeline
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC20,379$14.9M0.01%new13F-HRTimelineGroup
SCHRODER INVESTMENT MANAGEMENT GROUP21,023$14.8M0.01%+9,47113F-HRTimeline
HRT FINANCIAL LP18,754$13.7M0.03%-93013F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC18,679$13.6M0.03%-9,52313F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp17,183$12.5M<0.01%+63413F-HRTimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP16,809$11.6M0.01%+16,25313F-HRTimelineGroup
Assenagon Asset Management S.A.14,786$10.8M0.02%-9,56113F-HRTimeline
DCF Advisers, LLC14,650$10.7M4.03%+1,00013F-HRTimeline
Allianz Asset Management GmbHin group Allianz SE14,401$10.5M0.01%+11,40013F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 2 filers holding14,392$10.5M-28,646Timeline
CenterBook Partners LP13,934$10.2M0.55%new13F-HRTimeline
Ilmarinen Mutual Pension Insurance Co13,800$10.1M0.08%+10,20013F-HRTimeline
Erste Asset Management GmbHin group Erste Asset Management GmbH14,206$10M0.09%-9613F-HRTimelineGroup
Balyasny Asset Management L.P.in group Balyasny Asset Management13,111$9.57M0.02%-28,81213F-HRTimelineGroup
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…12,682$9.26M0.02%+1,86113F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO13,005$9.16M<0.01%-99413F-HR/ATimelineGroup
USS Investment Management Ltd12,144$8.87M0.03%+14713F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…12,112$8.84M0.23%-3,16113F-HRTimelineGroup
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co11,567$8.48M0.02%-1,00813F-HRTimelineGroup
Quantinno Capital Management LP11,148$8.14M0.01%+1,11113F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.10,110$7.38M0.28%+9,10613F-HR/ATimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co9,404$6.87M<0.01%+1,16113F-HRTimelineGroup
Steward Partners Investment Advisory, L…9,371$6.84M0.03%+9,01213F-HRTimeline
ASSETMARK, INCin group ASSETMARK, INC9,275$6.77M0.01%-56513F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC9,082$6.63M<0.01%-1,87813F-HRTimelineGroup
Campbell & CO Investment Adviser LLC9,034$6.6M0.38%-2,14313F-HRTimeline
Crossmark Global Holdings, Inc.8,668$6.33M0.09%+50013F-HRTimeline
CVFG LLC8,517$6.22M0.77%new13F-HRTimeline
Creative Planningin group Creative Planning8,239$6.02M<0.01%-47013F-HRTimelineGroup
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP8,069$5.89M0.01%-1,49813F-HRTimelineGroup
Cinctive Capital Management LP7,687$5.61M0.37%+1,08113F-HRTimeline
MACKENZIE FINANCIAL CORP7,436$5.43M0.01%+1,20613F-HRTimeline
EFG International AGin group EFG International AG7,083$5.17M0.11%+88713F-HRTimelineGroup
NAVELLIER & ASSOCIATES INC7,023$5.13M0.53%+35513F-HRTimeline
Trexquant Investment LP7,009$5.12M0.04%+5,90013F-HRTimeline
Federation des caisses Desjardins du Qu…6,919$5.05M0.02%+73513F-HRTimeline
Maryland State Retirement & Pension Sys…6,892$5.03M0.1%+46213F-HRTimeline
Cetera Investment Advisers6,732$4.92M0.01%-2,46713F-HRTimeline
MML INVESTORS SERVICES, LLC6,011$4.39M0.01%-5,92513F-HRTimeline
EAGLE GLOBAL ADVISORS LLC6,002$4.38M0.16%+50013F-HRTimeline
iA Global Asset Management Inc.6,000$4.38M0.06%013F-HRTimeline
Y-Intercept (Hong Kong) Ltd5,884$4.3M0.08%+1,71413F-HRTimeline
Mitsubishi UFJ Asset Management Co., Lt…in group Mitsubishi UFJ Trust & Bankin…5,550$4.05M<0.01%013F-HRTimelineGroup
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC5,545$4.05M<0.01%-163,55313F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC5,500$4.02M<0.01%-5,02513F-HRTimelineGroup
HighTower Advisors, LLC5,298$3.87M<0.01%-77813F-HRTimeline
QVT Financial LP5,218$3.81M0.3%013F-HRTimeline
STATE STREET CORPin group STATE STREET CORP5,113$3.73M<0.01%+37913F-HRTimelineGroup
O'SHAUGHNESSY ASSET MANAGEMENT, LLC5,055$3.69M0.02%+38513F-HRTimeline
China Universal Asset Management Co., L…5,035$3.68M0.28%+29113F-HRTimeline
M&T Bank Corpin group M&T Bank Corp5,029$3.67M0.01%+4913F-HR/ATimelineGroup
Varma Mutual Pension Insurance Co5,000$3.65M0.02%+1,00013F-HR/ATimeline
HighVista Strategies LLC4,918$3.59M0.99%+1,33013F-HRTimeline
Focus Partners Wealthin group Focus Partners Wealth4,810$3.51M<0.01%+1,32913F-HRTimelineGroup
ACUTA CAPITAL PARTNERS, LLC4,690$3.42M2.44%-16113F-HRTimeline
Jain Global LLC4,641$3.39M0.04%-53,60913F-HRTimeline
KENNEDY CAPITAL MANAGEMENT LLC4,577$3.34M0.07%+1,03213F-HRTimeline
PFM Health Sciences, LP4,535$3.31M0.35%+33313F-HRTimeline
HARVEY CAPITAL MANAGEMENT INC4,501$3.29M0.75%new13F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Nilsine Partners, LLC4,126$3.23M0.25%+47313F-HRTimeline
GUGGENHEIM CAPITAL LLCin group GUGGENHEIM CAPITAL LLC4,032$2.94M0.02%+1,23613F-HRTimelineGroup
Ethic Inc.4,029$2.94M0.05%-5613F-HRTimeline
PRINCIPAL FINANCIAL GROUP INCgroup of 2 filers holding3,934$2.87M-271Timeline
TRUIST FINANCIAL CORPin group TRUIST FINANCIAL CORP3,878$2.83M<0.01%-64313F-HRTimelineGroup
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…3,796$2.77M<0.01%+57013F-HRTimelineGroup
Boston Common Asset Management, LLC3,753$2.74M0.18%new13F-HRTimeline
RHUMBLINE ADVISERS3,752$2.74M<0.01%+1,92313F-HRTimeline
AWM Investment Company, Inc.3,750$2.74M0.3%013F-HRTimeline
SECTORAL ASSET MANAGEMENT INC3,564$2.74M2.27%+67013F-HRTimeline
Orion Porfolio Solutions, LLC3,730$2.72M0.02%-3,54313F-HRTimeline
Mariner, LLCin group Mariner, LLC3,618$2.64M<0.01%-13613F-HRTimelineGroup
DZ BANK AG Deutsche Zentral Genossensch…in group DZ BANK AG Deutsche Zentral G…3,597$2.63M<0.01%new13F-HRTimelineGroup
Soleus Capital Management, L.P.3,500$2.56M0.1%-28,22613F-HRTimeline
Havemeyer Place LP3,431$2.51M0.29%+2,95613F-HRTimeline
Financiere des Professionnels - Fonds d…3,327$2.43M0.14%new13F-HRTimeline
Vanguard Personalized Indexing Manageme…in group VANGUARD GROUP INC3,136$2.29M0.02%-33613F-HRTimelineGroup
Nicholas Investment Partners, LP2,898$2.12M0.15%-5,35613F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\2,823$2.06M<0.01%-3,56213F-HRTimelineGroup
Nan Fung Group Holdings Ltd2,800$2.04M1.69%013F-HRTimeline
Cerity Partners LLCin group Cerity Partners LLC2,788$2.04M<0.01%-88013F-HRTimelineGroup
QUADRANT CAPITAL GROUP LLC2,778$2.03M0.06%-2813F-HR/ATimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC2,772$2.02M0.01%+6713F-HRTimelineGroup
CIM, LLC2,769$2.02M0.29%+13313F-HRTimeline
SWS Partners2,760$2.02M0.5%+6413F-HRTimeline
GREAT VALLEY ADVISOR GROUP, INC.in group GREAT VALLEY ADVISOR GROUP, I…2,540$1.86M0.03%+74013F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC2,530$1.85M<0.01%+12913F-HRTimelineGroup
WESPAC Advisors SoCal, LLC2,500$1.83M0.39%+38113F-HRTimeline
SILVERCREST ASSET MANAGEMENT GROUP LLC2,487$1.82M0.01%-3613F-HRTimeline
Sanctuary Advisors, LLC2,432$1.78M0.01%-52613F-HRTimeline
GILDER GAGNON HOWE & CO LLC2,384$1.74M0.02%-1,38713F-HRTimeline
Corient Private Wealth LPin group Corient Private Wealth LP2,255$1.63M<0.01%+11013F-HRTimelineGroup
NLB Skladi, upravljanje premozenja, d.o…2,229$1.63M0.08%-1,07113F-HRTimeline
AustralianSuper Pty Ltd2,220$1.62M0.01%+89713F-HRTimeline
Dorsey Wright & Associates2,189$1.6M0.2%+71013F-HRTimeline
EDMOND DE ROTHSCHILD HOLDING S.A.in group EDMOND DE ROTHSCHILD HOLDING …2,173$1.59M0.02%+24513F-HRTimelineGroup
Snowden Capital Advisors LLC2,117$1.55M0.04%+17713F-HRTimeline
Laird Norton Wetherby Trust Company, LLCin group Laird Norton Wetherby Trust C…2,114$1.54M0.03%-15913F-HRTimelineGroup
NorthCoast Asset Management LLC2,034$1.49M0.03%+8713F-HRTimeline
OLD MISSION CAPITAL LLC2,014$1.47M0.03%-7,24113F-HRTimeline
Diversify Advisory Services, LLCgroup of 2 filers holding1,884$1.46M+1,361Timeline
Atria Investments, Inc2,001$1.46M0.02%-45313F-HRTimeline
Callan Family Office, LLCin group Callan Family Office, LLC1,977$1.44M0.03%013F-HRTimelineGroup
Sequoia Financial Advisors, LLC1,961$1.43M0.01%+3213F-HRTimeline
PARTNERS CAPITAL INVESTMENT GROUP, LLP1,935$1.41M0.05%-22413F-HRTimeline
TEALWOOD ASSET MANAGEMENT INC1,889$1.38M0.63%new13F-HRTimeline
Henshaw Capital LLC1,862$1.36M0.05%013F-HRTimeline
Banco Santander, S.A.in group Banco Santander, S.A.1,847$1.35M0.01%new13F-HRTimelineGroup
SANDERS MORRIS HARRIS LLC1,830$1.34M0.21%new13F-HRTimeline
SIGNATUREFD, LLC1,813$1.32M0.02%-4013F-HRTimeline