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iRhythm Holdings, Inc.
$113.26 +0.71 (+0.63%) At close · Jul 15
Market Cap
$3.77B
Shares
32,862,408

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 304
Total Value: $3,969,113,137
Total Shares: 33,630,516
Showing 1–100 of 314 holdings by value · page 1 of 4

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 304 13F filers
Top Holder
8.1%
Jun 2023 → Mar 2026 · range 8.1% – 36.3%
of institutional value
Top 5
26.5%
Jun 2023 → Mar 2026 · range 26.5% – 56.2%
of institutional value
Top 10
42.0%
Jun 2023 → Mar 2026 · range 42.0% – 63.9%
of institutional value
HHI
264
Jun 2023 → Mar 2026 · range 264 – 1,452
Broadly held
Showing 100 of 314
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
Mega BlackRock, Inc. $323,552,412 8.15% 2,741,505
Large RTW INVESTMENTS, LP $196,916,370 4.96% 1,668,500
Mega MILLENNIUM MANAGEMENT LLC $189,777,812 4.78% 1,608,014
Large Artisan Partners Limited Partnership $171,236,044 4.31% 1,450,907
Mega VANGUARD CAPITAL MANAGEMENT LLC $170,622,694 4.30% 1,445,710
Mega FMR LLC $160,733,679 4.05% 1,361,919
Large Holocene Advisors, LP $147,366,617 3.71% 1,248,658
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $123,620,280 3.11% 1,047,452
Mega GEODE CAPITAL MANAGEMENT, LLC $96,435,321 2.43% 817,110
Mega STATE STREET CORP $93,035,402 2.34% 788,302
Large BNP PARIBAS ASSET MANAGEMENT Holding S.A. $89,938,556 2.27% 762,062
Mid EVENTIDE ASSET MANAGEMENT, LLC $89,792,566 2.26% 760,825
Mega JPMORGAN CHASE & CO $84,372,024 2.13% 714,896
Large FULLER & THALER ASSET MANAGEMENT, INC. $79,627,857 2.01% 674,698
Large BLAIR WILLIAM & CO/IL $74,161,997 1.87% 628,385
Mid BRAIDWELL LP $72,014,859 1.81% 610,192
Large Point72 Asset Management, L.P. $70,741,778 1.78% 599,405
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $68,791,379 1.73% 582,879
Mid Stephens Investment Management Group LLC $66,271,770 1.67% 561,530
Mega D. E. Shaw & Co., Inc. $65,414,473 1.65% 554,266
Mega Capital Research Global Investors $60,141,811 1.52% 509,590
Large Allspring Global Investments Holdings, LLC $55,128,675 1.39% 467,113
Mega BANK OF AMERICA CORP /DE/ Bank $51,048,251 1.29% 432,539
Large Polar Capital Holdings Plc $49,758,648 1.25% 421,612
Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE Insurance $46,095,897 1.16% 390,577
Large MACKENZIE FINANCIAL CORP $43,841,479 1.10% 371,475
Large LOOMIS SAYLES & CO L P $43,418,849 1.09% 367,894
Mega GOLDMAN SACHS GROUP INC $41,137,404 1.04% 348,563
Small Ophir Asset Management Pty Ltd $39,631,942 1.00% 335,807
Mega Invesco Ltd. $35,105,282 0.88% 297,452
Mega NORTHERN TRUST CORP Bank $33,645,848 0.85% 285,086
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $33,269,483 0.84% 281,897
Large FRED ALGER MANAGEMENT, LLC $33,050,319 0.83% 280,040
Mid Rock Springs Capital Management LP $30,891,735 0.78% 261,750
Mega SCHRODER INVESTMENT MANAGEMENT GROUP $29,238,982 0.74% 247,746
Mega MORGAN STANLEY $28,065,035 0.71% 237,799
Mega AMERIPRISE FINANCIAL INC $27,945,483 0.70% 236,786
Mega CITIGROUP INC $27,395,155 0.69% 232,123
Large Qube Research & Technologies Ltd $26,776,849 0.67% 226,884
Mega VANGUARD FIDUCIARY TRUST CO Bank $26,400,955 0.67% 223,699
Mega DEUTSCHE BANK AG\ Bank $25,463,757 0.64% 215,758
Large SEI INVESTMENTS CO $23,474,649 0.59% 198,904
Large Balyasny Asset Management L.P. $22,946,510 0.58% 194,429
Mega BARCLAYS PLC $22,228,476 0.56% 188,345
Large BAMCO INC /NY/ $21,703,878 0.55% 183,900
Mid NEXT CENTURY GROWTH INVESTORS LLC $19,981,494 0.50% 169,306
Mid First Light Asset Management, LLC $19,841,050 0.50% 168,116
Mega MASSACHUSETTS FINANCIAL SERVICES CO /MA/ $19,666,497 0.50% 166,637
Mid OBERWEIS ASSET MANAGEMENT INC/ $18,411,592 0.46% 156,004
Large FEDERATED HERMES, INC. $17,639,150 0.44% 149,459
Mega RAYMOND JAMES FINANCIAL INC $17,127,415 0.43% 145,123
Mega JENNISON ASSOCIATES LLC $16,173,460 0.41% 137,040
Mega FRANKLIN RESOURCES INC $14,346,272 0.36% 121,558
Mega CITADEL ADVISORS LLC $13,407,071 0.34% 113,600
Mega JANE STREET GROUP, LLC $13,320,209 0.34% 112,864
Mega Nuveen, LLC $13,186,610 0.33% 111,732
Large Trexquant Investment LP $13,136,924 0.33% 111,311
Large WCM INVESTMENT MANAGEMENT, LLC $12,755,365 0.32% 108,078
Mega Bank of New York Mellon Corp Bank $12,721,254 0.32% 107,789
Mid PERCEPTIVE ADVISORS LLC $12,395,168 0.31% 105,026
Large NEW YORK STATE COMMON RETIREMENT FUND Pension $12,108,143 0.31% 102,594
Mid SEGALL BRYANT & HAMILL, LLC $11,777,923 0.30% 99,796
Mid Granahan Investment Management, LLC $11,332,516 0.29% 96,022
Mega UBS Group AG $10,846,391 0.27% 91,903
Mid TimesSquare Capital Management, LLC $10,698,749 0.27% 90,652
Mega WELLINGTON MANAGEMENT GROUP LLP $10,676,089 0.27% 90,460
Large Man Group plc $10,410,544 0.26% 88,210
Large Schonfeld Strategic Advisors LLC $10,401,456 0.26% 88,133
Large M&G PLC $10,039,017 0.25% 85,062
Mid C WorldWide Group Holding A/S $9,441,600 0.24% 80,000
Mid Susquehanna Portfolio Strategies, LLC $8,964,917 0.23% 75,961
Large Thrivent Financial for Lutherans $8,870,618 0.22% 75,162
Mid FRONTIER CAPITAL MANAGEMENT CO LLC $8,078,941 0.20% 68,454
Mid PEREGRINE CAPITAL MANAGEMENT LLC $7,774,567 0.20% 65,875
Mega Swiss National Bank Bank $7,517,874 0.19% 63,700
Mega MILLENNIUM MANAGEMENT LLC $7,376,250 0.19% 62,500
Large SILVERCREST ASSET MANAGEMENT GROUP LLC $7,279,591 0.18% 61,681
Mega CANADA PENSION PLAN INVESTMENT BOARD Pension $6,939,576 0.17% 58,800
Large RENAISSANCE TECHNOLOGIES LLC $6,349,476 0.16% 53,800
Mega PRINCIPAL FINANCIAL GROUP INC $6,311,236 0.16% 53,476
Mega TWO SIGMA INVESTMENTS, LP $6,207,852 0.16% 52,600
Mega Legal & General Group Plc $6,086,172 0.15% 51,569
Mega Amundi $5,850,840 0.15% 49,575
Mid Engineers Gate Manager LP $5,814,727 0.15% 49,269
Large STATE OF WISCONSIN INVESTMENT BOARD $5,670,861 0.14% 48,050
Mega FIRST TRUST ADVISORS LP $5,616,453 0.14% 47,589
Mid Jump Financial, LLC $5,309,011 0.13% 44,984
Large Connor, Clark & Lunn Investment Management Ltd. $4,997,674 0.13% 42,346
Mid Campbell & CO Investment Adviser LLC $4,817,340 0.12% 40,818
Small Parkman Healthcare Partners LLC $4,735,552 0.12% 40,125
Mega RHUMBLINE ADVISERS $4,652,584 0.12% 39,422
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $4,404,978 0.11% 37,324
Mega ALLIANCEBERNSTEIN L.P. $4,284,007 0.11% 36,299
Mega PRICE T ROWE ASSOCIATES INC /MD/ $4,211,779 0.11% 35,687
Mid Hillsdale Investment Management Inc. $4,124,799 0.10% 34,950
Small SIRIOS CAPITAL MANAGEMENT L P $4,100,486 0.10% 34,744
Mega AQR CAPITAL MANAGEMENT LLC $4,082,310 0.10% 34,590
Large Verition Fund Management LLC $4,079,361 0.10% 34,565
Mega ENVESTNET ASSET MANAGEMENT INC $3,792,454 0.10% 32,134
Small KCM Capital Inc $3,540,600 0.09% 30,000
Key facts CIK 1388658 CUSIP 450056106 13F (30d) 16 filings 15 filers Visit website Investor relations

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