IRHYTHM TECHNOLOGIES INC

Ticker: IRTC CUSIP: 450056106 Class: EQTY

Note: Option positions (PUT/CALL) are excluded.

InstitutionSharesValue ($000)
VANGUARD GROUP INC3,310,519$587,418
BlackRock, Inc.2,813,989$499,314
SANDS CAPITAL MANAGEMENT, LLC1,699,645$301,585
Artisan Partners Limited Partnership1,511,992$268,288
Capital Research Global Investors1,184,746$210,221
RTW INVESTMENTS, LP1,181,990$209,732
GEODE CAPITAL MANAGEMENT, LLC858,405$152,337
UBS ASSET MANAGEMENT AMERICAS INC829,862$147,251
MILLENNIUM MANAGEMENT LLC826,376$146,632
STATE STREET CORP764,839$135,713
JPMORGAN CHASE & CO758,587$134,604
BLAIR WILLIAM & CO/IL718,797$127,543
EVENTIDE ASSET MANAGEMENT, LLC692,486$122,880
Holocene Advisors, LP683,568$121,292
FULLER & THALER ASSET MANAGEMENT, INC.639,423$113,459
FMR LLC628,766$111,568
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP606,969$107,701
BNP Paribas Investment Partners S.A.583,014$103
Stephens Investment Management Group LLC519,325$92,149
PRICE T ROWE ASSOCIATES INC /MD/502,120$89
Invesco Ltd.498,385$88,433
WELLINGTON MANAGEMENT GROUP LLP408,256$72,441
Allspring Global Investments Holdings, LLC407,409$71,386
LOOMIS SAYLES & CO L P392,077$69,570
D. E. Shaw & Co., Inc.360,669$63,997
BANK OF AMERICA CORP /DE/354,770$62,950
MACKENZIE FINANCIAL CORP347,304$61,896
GOLDMAN SACHS GROUP INC329,135$58,402
WESTFIELD CAPITAL MANAGEMENT CO LP325,063$57,679
BESSEMER GROUP INC321,984$57
FRED ALGER MANAGEMENT, LLC310,582$55,110
Polar Capital Holdings Plc308,100$54,669
CHARLES SCHWAB INVESTMENT MANAGEMENT INC286,124$50,770
NORTHERN TRUST CORP279,070$49,518
LORD, ABBETT & CO. LLC277,212$49
DRIEHAUS CAPITAL MANAGEMENT LLC267,968$47,548
Rock Springs Capital Management LP235,000$41,698
Assenagon Asset Management S.A.225,205$39,960
Point72 Asset Management, L.P.219,468$38,942
BRAIDWELL LP217,345$38,566
SEI INVESTMENTS CO203,355$36,083
MANUFACTURERS LIFE INSURANCE COMPANY, THE196,075$34,792
BARCLAYS PLC193,975$34,419
JANE STREET GROUP, LLC192,391$34,138
CITIGROUP INC190,335$33,773
DEUTSCHE BANK AG\187,661$33,299
NEXT CENTURY GROWTH INVESTORS LLC172,838$30,668
MORGAN STANLEY169,991$30,163
BALYASNY ASSET MANAGEMENT L.P.167,274$29,681
SCHRODER INVESTMENT MANAGEMENT GROUP162,053$28,938
First Light Asset Management, LLC153,871$27,303
RAYMOND JAMES FINANCIAL INC153,806$27,426
UBS Group AG153,218$27,187
MASSACHUSETTS FINANCIAL SERVICES CO /MA/150,284$26,666
Qube Research & Technologies Ltd144,614$25,660
JENNISON ASSOCIATES LLC139,059$24,675
Nuveen, LLC133,675$23,719
Integral Health Asset Management, LLC130,000$23,067
NEW YORK STATE COMMON RETIREMENT FUND129,732$23,020
Ophir Asset Management Pty Ltd127,697$22,659
Walleye Capital LLC127,596$22,641
ADAGE CAPITAL PARTNERS GP, L.L.C.125,000$22,180
AMERIPRISE FINANCIAL INC123,621$21,935
OBERWEIS ASSET MANAGEMENT INC/119,700$21,240
FRANKLIN RESOURCES INC118,578$21,040
Bank of New York Mellon Corp112,119$19,894
SEGALL BRYANT & HAMILL, LLC111,697$19,820
PERCEPTIVE ADVISORS LLC108,000$19,164
FEDERATED HERMES, INC.106,407$18,881
RENAISSANCE TECHNOLOGIES LLC103,900$18,436
Squarepoint Ops LLC93,708$16,628
M&G PLC84,138$14,892
C WorldWide Group Holding A/S80,000$14
Trexquant Investment LP78,653$13,956
Engineers Gate Manager LP77,119$13,684
BNP PARIBAS ARBITRAGE, SA73,651$13,069
WCM INVESTMENT MANAGEMENT, LLC73,292$13,088
FRONTIER CAPITAL MANAGEMENT CO LLC71,048$12,607
PRINCIPAL FINANCIAL GROUP INC69,421$12,318
Swiss National Bank63,400$11,250
Freestone Grove Partners LP63,140$11,204
FIRST TRUST ADVISORS LP60,802$10,789
TimesSquare Capital Management, LLC59,822$10,615
PEREGRINE CAPITAL MANAGEMENT LLC56,868$10,091
NORGES BANK56,237$9,979
Man Group plc56,202$9,972
Jain Global LLC54,844$9,732
Legal & General Group Plc52,070$9,239
STATE OF WISCONSIN INVESTMENT BOARD51,153$9,077
CASTLEARK MANAGEMENT LLC50,193$8,906
SILVERCREST ASSET MANAGEMENT GROUP LLC47,898$8,499
WELLS FARGO & COMPANY/MN45,286$8,036
VICTORY CAPITAL MANAGEMENT INC43,215$7,668
Connor, Clark & Lunn Investment Management Ltd.42,118$7,473
STEADFAST CAPITAL MANAGEMENT LP41,000$7,275
RHUMBLINE ADVISERS40,610$7,206
PRUDENTIAL FINANCIAL INC40,424$7,173
AQR CAPITAL MANAGEMENT LLC40,165$7,127
NOMURA ASSET MANAGEMENT INTERNATIONAL INC.39,747$7,053
Universal- Beteiligungs- und Servicegesellschaft mbH38,534$6,837
233 other institutions1,340,025$219,066
Total (333 institutions)35,179,849$5,910,612