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INSM INSMED INC

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Stock (common), issuer CIK 1104506

645 managers (665 13F filers) reported a position in INSM shares at 2026-06-30, 223,633,000 shares in all. 112 filers opened a position and 121 filers sold out during the quarter.

Managers
645
13F filers
665
New
112
Added
245
Reduced
231
Sold out
121
Shares held by filers
223,633,000

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, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, 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
VANGUARD GROUP INCgroup of 8 filers holding22,242,827$2.37B+288,256Timeline
FMR LLCin group FMR LLC16,143,583$1.72B0.07%+2,983,41613F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.15,807,984$1.69B0.03%-870,16213F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO10,428,170$1.09B0.06%-13,722,32913F-HRTimelineGroup
BAKER BROS. ADVISORS LPin group BAKER BROS. ADVISORS LP8,796,111$938M4.7%+1,375,00013F-HRTimelineGroup
Capital International Investorsin group Capital International Investo…8,238,124$878M0.18%+2,642,93013F-HRTimelineGroup
Darwin Global Management, Ltd.in group Darwin Global Management, Ltd.6,431,163$674M17.91%-10,374,02113F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC6,179,571$659M0.13%+3,121,85313F-HRTimelineGroup
Orbis Allan Gray Ltdin group Orbis Allan Gray Ltd6,076,487$648M2.23%+4,203,66313F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP6,052,174$645M0.02%+500,47513F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.5,877,959$627M0.39%+252,13413F-HRTimelineGroup
Artisan Partners Limited Partnership5,441,718$580M0.95%-1,085,58313F-HRTimeline
RTW INVESTMENTS, LP4,842,880$516M4.41%013F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC4,220,155$449M0.02%-230,23413F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding3,919,517$418M+967,011Timeline
PRICE T ROWE ASSOCIATES INC /MD/3,405,290$363M0.04%+312,48313F-HRTimeline
NORGES BANK3,377,641$360M0.04%new13F-HRTimeline
Franklin Resourcesgroup of 2 filers holding2,989,144$319M-271,542Timeline
Jupiter Topco LLCin group Janus Henderson2,605,181$278M0.11%13F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC2,556,973$273M0.16%+374,40213F-HRTimelineGroup
MAVERICK CAPITAL LTD2,150,762$229M2.07%new13F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC2,048,005$218M0.15%+890,21913F-HRTimelineGroup
Qube Research & Technologies Ltd1,682,334$179M0.2%+1,533,81913F-HRTimeline
WESTFIELD CAPITAL MANAGEMENT CO LP1,629,561$174M0.57%+161,10213F-HRTimeline
T. Rowe Price Investment Management, In…1,622,675$173M0.11%new13F-HRTimeline
Integral Health Asset Management, LLC1,600,000$171M7%+100,00013F-HRTimeline
Duquesne Family Office LLC1,424,690$152M3.49%+270,60013F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC1,409,885$150M0.02%+467,23913F-HRTimelineGroup
Bellevue Group AGin group Bellevue Group AG1,393,418$149M3.13%+1,383,38413F-HRTimelineGroup
Balyasny Asset Management L.P.in group Balyasny Asset Management1,326,430$141M0.26%+1,104,72313F-HRTimelineGroup
Paradigm Biocapital Advisors LPin group Paradigm Biocapital Advisors …1,325,977$141M2.65%+71,48913F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP1,315,325$140M0.02%+21,32513F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp1,312,756$140M0.02%+50,00713F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP1,242,222$132M0.1%+1,005,20513F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY1,233,498$132M0.01%-98,04413F-HRTimelineGroup
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…1,220,353$130M0.12%+118,10513F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co1,213,963$129M0.02%+144,57313F-HRTimelineGroup
Hood River Capital Management LLC1,056,871$113M0.82%+368,31713F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/1,023,114$109M0.01%-479,16713F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO1,015,870$108M0.1%-379,92413F-HRTimelineGroup
NWI MANAGEMENT LP1,014,000$108M6.91%013F-HRTimeline
Castle Hook Partners LP993,310$106M1.13%-276,44413F-HRTimeline
JENNISON ASSOCIATES LLC905,094$96.5M0.06%+300,40013F-HRTimeline
Polar Capital Holdings Plcin group Polar Capital Holdings Plc890,872$95M0.27%+522,76513F-HRTimelineGroup
PRINCIPAL FINANCIAL GROUP INCgroup of 2 filers holding862,854$92M-58,875Timeline
FIL Ltdin group FIL Ltd856,214$91.3M0.07%+27,26713F-HRTimelineGroup
ADAGE CAPITAL PARTNERS GP, L.L.C.in group ADAGE CAPITAL PARTNERS GP, L.…850,000$90.6M0.13%-50,00013F-HRTimelineGroup
Fiera Capital Corpin group Fiera Capital Corp843,042$89.9M0.33%-178,92813F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc826,431$88.1M0.02%+39,35213F-HRTimelineGroup
FRONTIER CAPITAL MANAGEMENT CO LLC795,242$84.8M0.79%+325,68113F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC759,735$81M0.04%-166,06413F-HRTimelineGroup
SAMLYN CAPITAL, LLCin group SAMLYN CAPITAL, LLC732,568$78.1M1.29%+315,36313F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 2 filers holding729,354$77.8M+348,197Timeline
TimesSquare Capital Management, LLC728,096$77.6M1.14%+143,29813F-HRTimeline
ALLIANCEBERNSTEIN L.P.462,796$75.7M0.03%-225,93813F-HRTimeline
Ensign Peak Advisors, Inc702,951$74.9M0.12%+203,19513F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\690,590$73.6M0.02%+128,11613F-HRTimelineGroup
HRT FINANCIAL LP689,981$73.6M0.13%new13F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC660,601$70.4M0.02%-114,54713F-HRTimelineGroup
Affinity Asset Advisors, LLC650,000$69.3M3.39%+170,00013F-HRTimeline
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC629,831$67.2M0.2%-272,83513F-HRTimeline
GW&K Investment Management, LLC629,760$67.1M0.52%+6,71213F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC616,464$65.7M0.13%+577,14813F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC612,832$65.3M0.02%-62,65313F-HRTimelineGroup
Railway Pension Investments Ltd604,700$64.5M0.81%new13F-HRTimeline
Swiss National Bank593,512$63.3M0.03%-32,40013F-HRTimeline
Nuveen, LLCin group TIAA591,844$63.1M0.02%+57,09413F-HRTimelineGroup
Artia Global Partners LP589,052$62.8M11.94%-39,66013F-HRTimeline
EVENTIDE ASSET MANAGEMENT, LLC583,665$62.2M0.83%+37,35513F-HRTimeline
Aberdeen Group plcin group Aberdeen Group plc577,437$61.6M0.09%+300,42113F-HRTimelineGroup
Davern Capital Partners, LP559,824$59.7M10.18%+377,26213F-HRTimeline
Candriam S.C.A.555,131$59.1M0.27%+153,39613F-HRTimeline
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…543,893$58M0.01%+144,84913F-HRTimelineGroup
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.536,997$57.3M0.09%new13F-HRTimelineGroup
Long Focus Capital Management, LLC528,000$56.3M2.3%+383,00013F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP501,930$53.5M0.05%+189,36513F-HRTimelineGroup
Amundiin group Amundi487,525$52M0.01%-317,45213F-HRTimelineGroup
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …475,307$50.7M0.05%+7,55413F-HRTimelineGroup
Bridgewater Associates, LP455,392$48.6M0.2%+159,81313F-HRTimeline
Sumitomo Mitsui Trust Group, Inc.in group Sumitomo Mitsui Trust Group, …437,713$46.7M0.03%-63,56913F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA416,487$44.4M0.01%-106,61413F-HRTimelineGroup
Palo Alto Investors LP413,980$44.1M6.1%-1,28913F-HR/ATimeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP408,388$43.5M0.01%+7,48813F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS400,765$42.7M0.02%-203,83513F-HRTimelineGroup
Eagle Health Investments LP384,130$41M6.79%+159,85913F-HRTimeline
Mitsubishi UFJ Trust & Banking Corpgroup of 2 filers holding380,671$40.6M+41,240Timeline
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC378,816$40.4M0.03%+108,11613F-HRTimelineGroup
Prosight Management, LP375,609$40M6.9%new13F-HRTimeline
Invesco Ltd.in group Invesco Ltd.368,261$39.3M<0.01%-6,144,62813F-HRTimelineGroup
GATEWAY INVESTMENT ADVISERS LLC365,000$38.9M0.38%013F-HRTimeline
Rock Springs Capital Management LP362,150$38.6M1.88%+47,85013F-HRTimeline
ENVESTNET ASSET MANAGEMENT INCgroup of 2 filers holding339,171$36.2M+37,152Timeline
NOMURA ASSET MANAGEMENT CO LTDgroup of 3 filers holding324,280$34.6M-928,164Timeline
VICTORY CAPITAL MANAGEMENT INC306,651$32.7M0.02%-89,59413F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…304,798$32.5M0.03%+1,61613F-HR/ATimeline
NEW YORK STATE COMMON RETIREMENT FUND304,236$32.4M0.04%+10,69013F-HRTimeline
SCHRODER INVESTMENT MANAGEMENT GROUP298,372$31.8M0.02%+178,41413F-HRTimeline
Defilade Capital Management, L.P.281,838$30M4.02%+86,92913F-HRTimeline
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC279,961$29.9M0.01%+163,50513F-HRTimelineGroup
RHUMBLINE ADVISERS272,715$29.1M0.02%+10013F-HRTimeline
First Turn Management, LLC263,851$28.1M3.01%+15,37613F-HRTimeline
C WorldWide Group Holding A/Sin group C WorldWide Group Holding A/S261,110$27.8M0.67%+100,00013F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN259,852$27.7M<0.01%-337,53213F-HRTimelineGroup
California Public Employees Retirement …250,350$26.7M0.02%-94,26213F-HRTimeline
Vestal Point Capital, LP250,000$26.7M0.62%new13F-HRTimeline
TD Asset Management Inc240,182$25.6M0.02%+76,75813F-HRTimeline
Caption Management, LLC236,000$25.2M0.89%new13F-HRTimeline
Trails Edge Capital Partners, LP230,331$24.6M3.9%new13F-HRTimeline
ADAR1 Capital Management, LLCin group ADAR1 Capital Management, LLC228,520$24.4M1.15%+193,12813F-HRTimelineGroup
Assenagon Asset Management S.A.218,270$23.3M0.03%+155,01113F-HR/ATimeline
DNB Asset Management ASin group DNB Asset Management AS213,259$22.7M0.06%+160,08913F-HRTimelineGroup
Connor, Clark & Lunn Investment Managem…212,676$22.7M0.04%+166,44613F-HRTimeline
Longaeva Partners L.P.201,226$21.5M0.62%new13F-HRTimeline
USS Investment Management Ltd196,253$20.9M0.08%new13F-HRTimeline
TUDOR INVESTMENT CORP ET AL195,391$20.8M0.09%new13F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC193,528$20.6M0.01%+182,12713F-HRTimelineGroup
Holocene Advisors, LP192,879$20.6M0.05%new13F-HRTimeline
Alyeska Investment Group, L.P.in group Alyeska Investment Group, L.P.190,264$20.3M0.05%+142,14213F-HRTimelineGroup
Handelsbanken Fonder AB189,581$20.2M0.06%+122,10013F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC185,643$19.8M0.01%-90,08813F-HRTimelineGroup
STATE BOARD OF ADMINISTRATION OF FLORID…181,194$19.3M0.03%+78913F-HRTimeline
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP170,888$18.2M0.01%-58,67513F-HRTimelineGroup
TREMBLANT CAPITAL GROUPin group TREMBLANT CAPITAL GROUP170,670$18.2M0.52%-2,96713F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC170,266$18.2M0.01%-63,03813F-HRTimelineGroup
SEB Asset Management AB168,187$17.9M0.07%+2,61113F-HRTimeline
Cinctive Capital Management LP161,996$17.3M0.69%+88,93313F-HRTimeline
Sofinnova Investments, Inc.158,398$16.9M0.9%-187,67713F-HRTimeline
Trexquant Investment LP156,553$16.7M0.1%new13F-HRTimeline
Woodline Partners LP152,618$16.3M0.05%+4,16513F-HRTimeline
Rhenman & Partners Asset Management AB151,960$16.2M1.53%-7,80013F-HRTimeline
EULAV Asset Management150,000$16M0.51%+58,00013F-HRTimeline
Eversept Partners, LP149,209$15.9M0.87%new13F-HRTimeline
CAPITAL FUND MANAGEMENT S.A.148,976$15.9M0.11%new13F-HRTimeline
AVIVA PLCin group AVIVA PLC144,131$15.4M0.02%+22,05713F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…140,219$14.9M0.01%-28,94313F-HRTimelineGroup
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC139,861$14.9M0.01%-103,84513F-HRTimelineGroup
MARSICO CAPITAL MANAGEMENT LLC129,531$13.8M0.36%new13F-HRTimeline
Swedbank ABin group Swedbank AB129,518$13.8M0.01%+46,65313F-HRTimelineGroup
LPL Financial LLC128,553$13.7M<0.01%-9,72813F-HRTimeline
Engineers Gate Manager LP126,044$13.4M0.17%-32,74813F-HRTimeline
STOREBRAND ASSET MANAGEMENT AS124,848$13.3M0.03%+34,02213F-HRTimeline
Jones Hill Capital LP122,375$13M2.77%new13F-HRTimeline
NOVO HOLDINGS A/S120,723$12.9M0.75%new13F-HRTimeline
DANSKE BANK A/S119,820$12.8M0.03%+8,76213F-HRTimeline
SPHERA FUNDS MANAGEMENT LTD.in group SPHERA FUNDS MANAGEMENT LTD.118,800$12.7M1.81%new13F-HRTimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD118,057$12.6M0.03%+3,71113F-HRTimeline
Jain Global LLC111,204$11.9M0.14%new13F-HRTimeline
Hudson Bay Capital Management LPin group Hudson Bay Capital Management…109,352$11.7M0.05%new13F-HRTimelineGroup
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …104,470$11.1M0.02%-15,87813F-HRTimelineGroup
Schonfeld Strategic Advisors LLC104,378$11.1M0.06%+48,32213F-HRTimeline
CenterBook Partners LP103,151$11M0.54%+67,91913F-HRTimeline
Nykredit A/Sin group Nykredit A/S103,144$11M0.03%13F-HRTimelineGroup
Y-Intercept (Hong Kong) Ltd101,908$10.9M0.22%new13F-HRTimeline
TANG CAPITAL MANAGEMENT LLCin group TANG CAPITAL MANAGEMENT LLC100,000$10.7M0.48%-160,00013F-HRTimelineGroup
Kynam Capital Management, LP100,000$10.7M0.59%new13F-HRTimeline
VAN ECK ASSOCIATES CORPin group VAN ECK ASSOCIATES CORP99,048$10.6M0.01%-5,24213F-HRTimelineGroup
J. Safra Sarasin Holding AGin group J. Safra Sarasin Holding AG95,602$10.4M0.15%+2,42113F-HRTimelineGroup
Treasurer of the State of North Carolina91,367$9.74M0.03%+1,72013F-HRTimeline
Soleus Capital Management, L.P.90,250$9.62M0.33%+80,00013F-HRTimeline
CANADA PENSION PLAN INVESTMENT BOARD89,500$9.54M0.01%+49,60013F-HRTimeline
M&G PLCin group M&G PLC88,008$9.42M0.05%-10,21313F-HRTimelineGroup
KLP KAPITALFORVALTNING AS86,700$9.24M0.03%+12,70013F-HRTimeline
FRED ALGER MANAGEMENT, LLCin group FRED ALGER MANAGEMENT, LLC82,325$8.78M0.03%-43,44113F-HRTimelineGroup
Asset Management One Co., Ltd.79,510$8.48M0.02%-2,87113F-HRTimeline
IMC-Chicago, LLC76,126$8.12M0.07%+71,65413F-HRTimeline
Tidal Investments LLCin group Tidal Investments LLC75,832$8.09M0.02%+14,05613F-HRTimelineGroup
DekaBank Deutsche Girozentrale50,000$8.02M0.01%013F-HRTimeline
Cormorant Asset Management, LP75,000$8M0.41%-115,00013F-HRTimeline
NATIXIS ADVISORS, LLCin group Natixis Investment Managers73,607$7.85M0.01%+30,67313F-HRTimelineGroup
Jump Financial, LLCin group Jump Financial, LLC73,500$7.84M0.07%new13F-HRTimelineGroup
SG Americas Securities, LLC73,088$7.79M<0.01%-64,06113F-HRTimeline
DZ BANK AG Deutsche Zentral Genossensch…in group DZ BANK AG Deutsche Zentral G…70,693$7.54M0.01%+10,51813F-HRTimelineGroup
ExodusPoint Capital Management, LP69,500$7.41M0.07%-78,63313F-HRTimeline
WORLDQUANT MILLENNIUM ADVISORS LLC69,199$7.38M0.03%new13F-HRTimeline
FJARDE AP-FONDEN /FOURTH SWEDISH NATION…68,450$7.3M0.03%+10013F-HRTimeline
State of New Jersey Common Pension Fund…in group State of New Jersey Common Pe…68,049$7.26M0.02%-4,83913F-HRTimelineGroup
Creative Planningin group Creative Planning67,762$7.22M<0.01%-4,43813F-HRTimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP68,803$7.11M<0.01%+27,39713F-HRTimelineGroup
Elmind Capital, LP65,000$6.93M1.74%new13F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …64,582$6.89M0.01%-8,11413F-HRTimelineGroup
Lansforsakringar Fondforvaltning AB (pu…63,437$6.76M0.03%-5,05213F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…61,152$6.52M0.02%+20113F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM60,340$6.43M0.03%+2,38913F-HRTimeline
MACKENZIE FINANCIAL CORP60,217$6.42M0.01%+36,44613F-HRTimeline
Axxion S.A.60,000$6.4M0.46%13F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd59,663$6.36M0.08%+55,00113F-HRTimelineGroup
Atle Fund Management AB58,378$6.22M1.67%-39,06013F-HRTimeline
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co57,376$6.11M0.01%+3,48613F-HRTimelineGroup
MCRAE CAPITAL MANAGEMENT INC56,836$6.06M1.19%+21,69113F-HRTimeline
KENNEDY CAPITAL MANAGEMENT LLC55,990$5.97M0.11%+21,46413F-HRTimeline
Resona Asset Management Co.,Ltd.in group Resona Asset Management Co.,L…56,132$5.97M0.03%-4,79813F-HRTimelineGroup
Cullen/Frost Bankers, Inc.in group Cullen/Frost Bankers, Inc.54,740$5.84M0.06%-83813F-HRTimelineGroup
Zurcher Kantonalbank (Zurich Cantonalba…54,644$5.83M0.01%-97,72213F-HRTimeline
IFM Investors Pty Ltd53,953$5.75M0.04%+11,21313F-HRTimeline
Man Group plcin group Man Group plc52,857$5.64M0.01%-73,98313F-HRTimelineGroup
Illinois Municipal Retirement Fund52,668$5.62M0.06%new13F-HRTimeline
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP52,163$5.56M<0.01%-23,53913F-HRTimelineGroup
Ishara Investments LP51,250$5.46M4.01%new13F-HRTimeline
Redmile Group, LLCin group Redmile Group, LLC51,234$5.46M0.37%new13F-HRTimelineGroup
EFG International AGin group EFG International AG50,941$5.43M0.1%+10,39913F-HRTimelineGroup