SecurityIRTC / iRhythm Technologies, Inc. (450056106)
President and CEOKing Kevin M
Institutional Owners146
Institutional Shares23,393,854 - 97.68%
Common Shares Outstanding23,948,686 shares (as of 2018-06-30)
Institutional Value$ 2,410,196,000 USD

Institutional Stock Ownership and Shareholders

IRTC / iRhythm Technologies, Inc. Institutional Ownership

iRhythm Technologies, Inc. (NASDAQ:IRTC) has 146 institutional investors and shareholders that have filed 13D/G or 13F forms with the Securities Exchange Commission (SEC). These institutions hold a total of 23,393,854 shares. Largest shareholders include Capital Research Global Investors, BlackRock Inc., Franklin Resources Inc, Vanguard Group Inc, Alliancebernstein L.p., Wells Fargo & Company/mn, Columbia Wanger Asset Management Llc, Ameriprise Financial Inc, JP Morgan Chase & Co, and Millennium Management Llc.
iRhythm Technologies, Inc. (NASDAQ:IRTC) ownership structure shows current positions in the company by institutions and funds, as well as latest changes in position size. Major shareholders can include individual investors, mutual funds, hedge funds, or institutions. The Schedule 13D indicates that the investor holds more than 5% of the company and intends to actively pursue a change in business strategy. Schedule 13G indicates a passive investment of over 5%. Green rows indicate new positions. Red rows indicate closed positions. Click the link icon to see the full transaction history.

File DateFormInvestor Opt Prev
Shares
Current
Shares
Change
(Percent)
Prev Value
($1000)
Current Value
($1000)
Change
(Percent)
2018-08-14 13F-HR DRIEHAUS CAPITAL MANAGEMENT LLC 261,729 233,262 -10.88 16,476 18,925 14.86
2018-10-05 13F-HR BAROMETER CAPITAL MANAGEMENT INC. 90,495 81,345 -10.11 7,342 7,700 4.88
2018-08-13 13F-HR OPPENHEIMER FUNDS INC 299,280 344,730 15.19 18,841 27,968 48.44
2018-08-10 13F-HR Shell Asset Management Co 15,063 15,063 0.00 948 1,222 28.90
2018-08-13 13F-HR LAZARD ASSET MANAGEMENT LLC 18,675 18,675 0.00 1,175 1,515 28.94
2018-08-13 13F-HR Advisor Group, Inc. 0 90 0 7
2018-08-14 13F-HR BANK OF AMERICA CORP /DE/ 6,600 4,755 -27.95 416 386 -7.21
2018-08-10 13F-HR GREAT WEST LIFE ASSURANCE CO /CAN/ 900 1,979 119.89 57 161 182.46
2018-08-14 13F-HR MACQUARIE GROUP LTD 10,850 0 -100.00 683 0 -100.00
2018-08-06 13F-HR Zurcher Kantonalbank (Zurich Cantonalbank) 1,380 1,380 0.00 87 112 28.74
2018-08-14 13F-HR LORD, ABBETT & CO. LLC 262,595 337,782 28.63 16,530 27,404 65.78
2018-08-14 13F-HR Weiss Multi-Strategy Advisers LLC 21,200 21,139 -0.29 1,335 1,715 28.46
2018-05-11 13F-HR CITIGROUP INC Call 5,300 334
2018-08-14 13F-HR Voya Investment Management LLC 6,452 8,941 38.58 406 725 78.57
2018-08-03 13F-HR FRONTIER CAPITAL MANAGEMENT CO LLC 12,770 1,036
2018-08-03 13F-HR SEI INVESTMENTS CO 1,140 13,308 1,067.37 71 1,079 1,419.72
2018-10-05 13F-HR OPTIMUM INVESTMENT ADVISORS 600 600 0.00 49 57 16.33
2017-02-10 13F-HR BlackRock Fund Advisors 227,657 6,830
2018-08-14 13F-HR Partner Investment Management, L.P. 5,287 429
2018-08-14 13F-HR GOLDMAN SACHS GROUP INC 169,316 18,949 -88.81 10,658 1,538 -85.57
2018-08-13 13F-HR ALLIANCEBERNSTEIN L.P. 927,168 850,517 -8.27 58,365 69,002 18.22
2018-08-14 13F-HR UBS ASSET MANAGEMENT AMERICAS INC 3,500 6,000 71.43 220,325 486,780 120.94
2018-08-20 13F-HR MASSMUTUAL TRUST CO FSB/ADV 100 100 0.00 6,295 8,113 28.88
2018-08-02 13F-HR FIRST TRUST ADVISORS LP 45,378 49,435 8.94 2,857 4,011 40.39
2018-07-18 13F-HR AMALGAMATED BANK 3,640 295
2018-07-26 13F-HR FIRST MERCANTILE TRUST CO 5,892 5,558 -5.67 371 451 21.56
2018-08-13 13F-HR Mitsubishi UFJ Securities Holdings Co., Ltd. 1,730 140
2018-08-14 13F-HR Alambic Investment Management, L.P. 3,300 0 -100.00 208 0 -100.00
2018-08-14 13F-HR TimesSquare Capital Management, LLC 681,120 499,390 -26.68 42,877 40,516 -5.51
2018-07-25 13F-HR BNP PARIBAS ARBITRAGE, SA 2,944 863 -70.69 185,325 70,015 -62.22
2018-08-14 13F-HR Marshall Wace LLP 7,200 0 -100.00 453 0 -100.00
2018-08-14 13F-HR GEODE CAPITAL MANAGEMENT, LLC 160,648 214,537 33.54 10,112 17,405 72.12
2018-08-13 13F-HR Renaissance Technologies LLC 405,300 25,514
2018-08-14 13F-HR MENTA CAPITAL LLC 0 7,349 0 596
2018-08-14 13F-HR ADVISORY RESEARCH INC 56,348 55,121 -2.18 3,547 4,472 26.08
2018-08-10 13F-HR PNC FINANCIAL SERVICES GROUP, INC. 385 498 29.35 24 40 66.67
2018-08-14 13F-HR SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC Put 80,000 6,490
2018-08-14 13F-HR MANUFACTURERS LIFE INSURANCE COMPANY, THE 10,823 17,585 62.48 681 1,427 109.54
2018-07-24 13F-HR COLUMBUS CIRCLE INVESTORS 125,165 113,884 -9.01 7,879 9,239 17.26
2018-08-14 13F-HR NEXT CENTURY GROWTH INVESTORS LLC 310,194 160,444 -48.28 19,526 13,016 -33.34
2018-08-13 13F-HR Neuberger Berman Group LLC 17,500 0 -100.00 1,102 0 -100.00
2018-08-13 13F-HR WOLVERINE TRADING, LLC Put 10,700 10,700 0.00 674 674 0.00
2018-08-03 13F-HR EAM Investors, LLC 68,886 55,028 -20.12 4,336 4,464 2.95
2018-08-08 13F-HR Pier Capital, LLC 94,168 92,019 -2.28 5,928 7,466 25.94
2018-07-31 13F-HR LOS ANGELES CAPITAL MANAGEMENT & EQUITY RESEARCH INC 25,970 2,107
2018-08-14 13F-HR TEACHERS ADVISORS INC 45,241 150,619 232.93 2,848 12,220 329.07
2018-08-14 13F-HR SPRINGBOK CAPITAL MANAGEMENT, LLC 2,129 0 -100.00 134 0 -100.00
2018-08-06 13F-HR STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 6,491 9,161 41.13 409 743 81.66
2018-08-14 13F-HR Lazarus Management Co LLC 5,035 408
2018-07-11 13F-HR Xact Kapitalforvaltning AB 3,800 308
2018-08-14 13F-HR PERCEPTIVE ADVISORS LLC 419,706 308,006 -26.61 26,420 24,989 -5.42
2018-08-08 13F-HR AMERICAN INTERNATIONAL GROUP INC 9,117 15,481 69.80 574 1,256 118.82
2018-08-07 13F-HR EAGLE ASSET MANAGEMENT INC 116,382 96,804 -16.82 7,326 7,853 7.19
2018-08-08 13F-HR US BANCORP \DE\ 756 828 9.52 47 68 44.68
2018-08-02 13F-HR JENNISON ASSOCIATES LLC 112,037 117,299 4.70 7,053 9,516 34.92
2018-08-14 13F-HR PRICE T ROWE ASSOCIATES INC /MD/ 109,637 84,182 -23.22 6,902 6,830 -1.04
2018-07-31 13F-HR GILDER GAGNON HOWE & CO LLC 133,610 127,793 -4.35 8,411 10,368 23.27
2018-08-03 13F-HR THOMPSON DAVIS & CO., INC. 150 12
2018-08-10 13F-HR EATON VANCE MANAGEMENT 44,912 44,912 0.00 2,827 3,644 28.90
2018-08-10 13F-HR NEW YORK STATE COMMON RETIREMENT FUND 108,786 119,086 9.47 6,848 9,661 41.08
2018-08-10 13F-HR FIL Ltd 370,238 346,401 -6.44 23,306 28,104 20.59
2018-08-07 13F-HR ROTHSCHILD ASSET MANAGEMENT INC 29,686 27,586 -7.07 1,869 2,238 19.74
2018-08-14 13F-HR TWO SIGMA ADVISERS, LP 27,500 63,200 129.82 1,731 5,127 196.19
2018-08-14 13F-HR AMERIPRISE FINANCIAL INC 756,646 781,484 3.28 47,630 63,402 33.11
2018-08-14 13F-HR Cubist Systematic Strategies, LLC 0 1,243 0 101
2018-08-02 13F-HR Atlantic Trust Group, LLC 2,500 2,750 10.00 157 223 42.04
2018-08-14 13F-HR Crow Point Partners, LLC 2,597 212
2018-08-13 13F-HR OSTERWEIS CAPITAL MANAGEMENT INC 40,400 60,545 49.86 2,543 4,912 93.16
2018-08-09 13F-HR BlackRock Inc. 1,621,618 2,111,203 30.19 102,081 171,283 67.79
2018-08-10 13F-HR BRANDYWINE MANAGERS, LLC 3,212 3,212 0.00 202 261 29.21
2018-08-14 13F-HR VANGUARD GROUP INC 761,642 877,034 15.15 47,944 71,154 48.41
2018-08-14 13F-HR UBS Group AG 9,868 9,789 -0.80 621 794 27.86
2018-07-30 13F-HR MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 183,769 119,997 -34.70 11,568 9,735 -15.85
2018-08-14 13F-HR Squarepoint Ops LLC 8,957 0 -100.00 564 0 -100.00
2018-08-09 13F-HR Mutual of America Capital Management LLC 42,297 42,997 1.65 2,663 3,488 30.98
2018-07-30 13F-HR SIMPLEX TRADING, LLC 357 0 -100.00 22 0 -100.00
2018-08-14 13F-HR TWO SIGMA INVESTMENTS LLC 35,302 117,412 232.59 2,222 9,526 328.71
2018-08-14 13F-HR BROWN CAPITAL MANAGEMENT LLC 680,922 705,822 3.66 42,864 57,263 33.59
2017-02-10 13F-HR BlackRock Institutional Trust Company, N.A. 31,456 944
2018-08-14 13F-HR Nuveen Asset Management, LLC 17,514 14,358 -18.02 1,103 1,165 5.62
2018-07-30 13F-HR Aperio Group, LLC 8,616 7,152 -16.99 542 580 7.01
2018-07-18 13F-HR Fny Investment Advisers, Llc 40 3
2018-08-14 13F-HR JP Morgan Chase & Co 624,595 739,362 18.37 39,318 59,984 52.56
2018-08-08 13F-HR SCHWAB CHARLES INVESTMENT MANAGEMENT INC 86,928 108,175 24.44 5,473 8,777 60.37
2018-07-18 13F-HR BOSTON ADVISORS LLC 3,387 3,515 3.78 213 285 33.80
2018-08-14 13F-HR MILLENNIUM MANAGEMENT LLC 620,500 726,837 17.14 39,060 58,968 50.97
2018-08-08 13F-HR Russell Investments Group, Ltd. 25,339 9,867 -61.06 1,595 800 -49.84
2018-08-14 13F-HR CLOUGH CAPITAL PARTNERS L P 20,400 15,400 -24.51 1,284 1,249 -2.73
2018-08-13 13F-HR TOCQUEVILLE ASSET MANAGEMENT L.P. 3,500 3,500 0.00 220 284 29.09
2017-05-16 13F-HR JANUS CAPITAL MANAGEMENT LLC 100,359 0 -100.00 3,011 0 -100.00
2018-08-13 13F-HR WOLVERINE TRADING, LLC 11,043 11,043 0.00 695 695 0.00
2018-07-19 13F-HR SIT INVESTMENT ASSOCIATES INC 11,300 11,300 0.00 711 917 28.97
2018-02-13 13F-HR COLUMBIA WANGER ASSET MANAGEMENT LLC 1,140,075 808,522 -29.08 59,147 45,318 -23.38
2018-07-30 13F-HR SHAKER INVESTMENTS LLC/OH 23,318 23,298 -0.09 1,468 1,890 28.75
2018-08-10 13F-HR CITIGROUP INC 57,675 3,699 -93.59 3,630 300 -91.74
2018-08-14 13F-HR Invesco Ltd. 30,712 0 -100.00 1,933 0 -100.00
2018-08-14 13F-HR FRANKLIN RESOURCES INC 1,065,716 1,087,171 2.01 67,087 88,202 31.47
2018-08-14 13F-HR Paloma Partners Management Co 10,175 0 -100.00 640 0 -100.00
2018-08-13 13F-HR ASCEND CAPITAL, LLC 85,270 0 -100.00 5,367 0 -100.00
2018-08-10 13F-HR Cutler Group LP 300 0 -100.00 18 0 -100.00
2018-08-14 13F-HR Adage Capital Partners GP LLC 148,519 200,000 34.66 9,349 16,226 73.56
2018-08-13 13F-HR Lebenthal Lisanti Capital Growth, LLC 39,120 31,735 -18.88 2,463 2,575 4.55
2018-08-14 13F-HR SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC 270,000 130,000 -51.85 16,997 10,547 -37.95
2018-08-14 13F-HR SUSQUEHANNA INTERNATIONAL GROUP, LLP Put 15,300 4,800 -68.63 963 389 -59.61
2018-08-14 13F-HR STATE STREET CORP 319,628 505,314 58.09 20,118 40,994 103.77
2018-08-14 13F-HR PEAK6 Investments, L.P. Put 2,900 235
2018-05-11 13F-HR CITIGROUP INC 58,485 57,675 -1.38 3,278 3,630 10.74
2018-10-15 13F-HR Winslow, Evans & Crocker, Inc. 296 28
2018-08-14 13F-HR Dynamic Technology Lab Private Ltd 8,084 0 -100.00 509 0 -100.00
2018-08-14 13F-HR ROYAL BANK OF CANADA 187,888 124,453 -33.76 11,827 10,097 -14.63
2018-08-14 13F-HR Rock Springs Capital Management LP 477,500 480,000 0.52 30,059 38,942 29.55
2018-08-07 13F-HR Trexquant Investment LP 12,302 0 -100.00 774 0 -100.00
2018-08-14 13F-HR AQR CAPITAL MANAGEMENT LLC 4,844 8,191 69.10 305 665 118.03
2018-08-14 13F-HR Polar Capital LLP 322,489 262,011 -18.75 20,300 21,257 4.71
2018-07-27 13F-HR PIEDMONT INVESTMENT ADVISORS LLC 413 34
2018-08-13 13F-HR SECTORAL ASSET MANAGEMENT INC 157,600 144,700 -8.19 9,921 11,740 18.33
2018-08-14 13F-HR PEAK6 Investments, L.P. Call 14,100 1,144
2018-08-07 13F-HR Bellevue Group AG 33,400 45,921 37.49 2,103 3,726 77.18
2018-08-10 13F-HR CITIGROUP INC Call 5,300 0 -100.00 334 0 -100.00
2018-08-14 13F-HR D. E. Shaw & Co., Inc. 25,262 0 -100.00 1,590 0 -100.00
2018-08-09 13F-HR Swiss National Bank 15,800 30,000 89.87 995 2,434 144.62
2018-08-14 13F-HR BALYASNY ASSET MANAGEMENT LLC 70,934 144,588 103.83 4,465 11,730 162.71
2018-08-10 13F-HR Employees Retirement System of Texas 26,000 20,000 -23.08 1,637 1,623 -0.86
2018-08-14 13F-HR Tower Research Capital LLC (TRC) 1,122 0 -100.00 71 0 -100.00
2018-07-27 13F-HR RB Capital Management, LLC 3,000 243
2017-02-10 13F-HR BlackRock Advisors LLC 97,905 2,937
2018-08-14 13F-HR Redmile Group, LLC 729,874 401,303 -45.02 45,946 32,558 -29.14
2018-08-08 13F-HR SOUTH TEXAS MONEY MANAGEMENT LTD 4,805 390
2018-08-10 13F-HR Legal & General Group Plc 2,527 3,718 47.13 159 302 89.94
2018-08-07 13F-HR Quantitative Systematic Strategies LLC 3,538 0 -100.00 223 0 -100.00
2018-08-15 13F-HR CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 49,264 38,408 -22.04 3,101 3,116 0.48
2018-08-14 13F-HR A.R.T. Advisors, LLC 10,421 0 -100.00 656 0 -100.00
2018-08-13 13F-HR Ameritas Investment Partners, Inc. 1,183 1,981 67.46 74 161 117.57
2018-08-14 13F-HR CREDIT SUISSE AG/ 21,555 20,891 -3.08 1,357 1,695 24.91
2018-08-13 13F-HR GROUP ONE TRADING, L.P. Put 1,000 100 -90.00 63 8 -87.30
2018-09-18 13F-HR/A NORTHERN TRUST CORP 190,626 284,282 49.13 12,000 23,062 92.18
2018-08-14 13F-HR CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 21,721 36,368 67.43 1,367 2,951 115.87
2018-08-13 13F-HR PRINCIPAL FINANCIAL GROUP INC 4,086 18,156 344.35 257 1,473 473.15
2018-08-06 13F-HR RHUMBLINE ADVISERS 13,668 22,999 68.27 860 1,866 116.98
2018-08-13 13F-HR Allianz Asset Management AG 2,547 207
2018-08-14 13F-HR Point72 Asia (Hong Kong) Ltd 731 0 -100.00 46 0 -100.00
2018-08-14 13F-HR Partner Fund Management, L.P. 490,430 39,789
2018-08-14 13F-HR FIFTH THIRD BANCORP 118 118 0.00 7 10 42.86
2018-08-14 13F-HR Point72 Asset Management, L.P. 552,859 342,106 -38.12 34,802 27,755 -20.25
2018-08-14 13F-HR/A CITADEL ADVISORS LLC 167,807 293,829 75.10 10,563 23,838 125.67
2018-08-02 13F-HR VICTORY CAPITAL MANAGEMENT INC 200,745 209,425 4.32 12,637 16,991 34.45
2018-08-14 13F-HR Schonfeld Strategic Advisors LLC 27,791 0 -100.00 1,750 0 -100.00
2018-08-10 13F-HR BLUESTEIN R H & CO 4,500 45,600 913.33 283 3,700 1,207.42
2018-08-20 13F-HR Winton Capital Group Ltd 14,071 5,880 -58.21 886 477 -46.16
2018-08-13 13F-HR PARAMETRIC PORTFOLIO ASSOCIATES LLC 42,364 41,666 -1.65 2,667 3,380 26.73
2018-08-13 13F-HR OXFORD ASSET MANAGEMENT 2,865 232
2018-08-13 13F-HR RAYMOND JAMES & ASSOCIATES 3,169 257
2018-08-14 13F-HR BARCLAYS PLC 11,681 7,701 -34.07 735 625 -14.97
2018-08-13 13F-HR GROUP ONE TRADING, L.P. 237 2,237 843.88 15 181 1,106.67
2018-09-27 13F-HR/A UNITED SERVICES AUTOMOBILE ASSOCIATION 2,986 242
2018-08-14 13F-HR/A CITADEL ADVISORS LLC Put 3,900 316
2018-08-14 13F-HR WADDELL & REED FINANCIAL INC 477,298 462,358 -3.13 30,046 37,511 24.85
2018-08-14 13F-HR PEAK6 Investments, L.P. 4,842 0 -100.00 305 0 -100.00
2018-08-14 13F-HR LOOMIS SAYLES & CO L P 355,997 358,228 0.63 22,410 29,063 29.69
2018-08-01 13F-HR WELLS FARGO & COMPANY/MN 696,746 826,252 18.59 43,860 67,033 52.83
2017-02-10 13F-HR BlackRock Group LTD 93,160 2,795
2018-08-14 13F-HR/A CITADEL ADVISORS LLC Call 7,100 576
2018-08-13 13F-HR Quantbot Technologies LP 284 5,968 2,001.41 17 484 2,747.06
2018-08-14 13F-HR DEUTSCHE BANK AG\ 167,135 168,597 0.87 10,520 13,675 29.99
2018-08-10 13F-HR FEDERATED INVESTORS INC /PA/ 100,000 100,000 0.00 6,295 8,113 28.88
2018-08-13 13F-HR ProShare Advisors LLC 3,131 254
2018-08-14 13F-HR SUSQUEHANNA INTERNATIONAL GROUP, LLP Call 61,500 100,900 64.07 3,871 8,186 111.47
2018-08-07 13F-HR SG Americas Securities, LLC 1,782 1,522 -14.59 112 123 9.82
2018-08-14 13F-HR TIAA CREF INVESTMENT MANAGEMENT LLC 61,882 134,191 116.85 3,895 10,887 179.51
2018-08-14 13F-HR MORGAN STANLEY 57,061 227,710 299.06 3,592 18,474 414.31
2018-08-14 13F-HR Marshall Wace North America L.P. 0 82,081 0 6,659
2017-02-10 13F-HR BlackRock Investment Management, LLC 25,195 756
2018-10-12 13F-HR BANK OF MONTREAL /CAN/ 1,339 166 -87.60 109 16 -85.32
2018-08-08 13F-HR Private Capital Group, Llc 216 0 -100.00 14 0 -100.00
2018-07-27 13F-HR/A WHITTIER TRUST CO 20 20 0.00 1 2 100.00
2018-08-14 13F-HR ELLINGTON MANAGEMENT GROUP LLC 12,100 0 -100.00 762 0 -100.00
2018-08-06 13F-HR TEACHER RETIREMENT SYSTEM OF TEXAS 3,495 284
2018-08-14 13F-HR Capital Research Global Investors 2,439,180 2,439,180 0.00 153,546 197,891 28.88
2018-08-10 13F-HR Pacad Investment Ltd. 1,400 0 -100.00 85 0 -100.00
2018-08-03 13F-HR Eam Global Investors Llc 28,419 19,125 -32.70 1,789 1,552 -13.25

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CUSIP: 450056106