Funds holding IRhythm Holdings Inc
315 funds declare a position · 59 ETFs and 256 other funds · 1.6B $· 71.7M SEK· 1.3M € · US4500561067
Each line carries its report date.
| Rank | Fund | Shares | Value | Weight | |
|---|---|---|---|---|---|
| 1 | VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS | 1,027,902 | 121.3M $ | 0.01 % | as of Mar 31, 2026 · Original filing |
| 2 | iShares Russell 2000 ETF iShares Trust | 779,271 | 92M $ | 0.13 % | as of Mar 31, 2026 · Original filing |
| 3 | VANGUARD SMALL-CAP INDEX FUND VANGUARD INDEX FUNDS | 742,897 | 87.7M $ | 0.05 % | as of Mar 31, 2026 · Original filing |
| 4 | Eventide Gilead Fund MUTUAL FUND SERIES TRUST | 464,252 | 54.8M $ | 2.04 % | as of Mar 31, 2026 · Original filing |
| 5 | SMALLCAP World Fund Inc SMALLCAP World Fund Inc | 463,814 | 54.7M $ | 0.07 % | as of Mar 31, 2026 · Original filing |
| 6 | VANGUARD EXPLORER FUND VANGUARD EXPLORER FUND | 458,646 | 59.2M $ | 0.27 % | as of Apr 30, 2026 · Original filing |
| 7 | FULLERTHALER BEHAVIORAL SMALL-CAP GROWTH Capitol Series Trust | 432,100 | 51M $ | 1.21 % | as of Mar 31, 2026 · Original filing |
| 8 | VANGUARD SMALL-CAP GROWTH INDEX FUND VANGUARD INDEX FUNDS | 415,359 | 49M $ | 0.13 % | as of Mar 31, 2026 · Original filing |
| 9 | Select Medical Technology and Devices Portfolio Fidelity Select Portfolios | 368,000 | 49.2M $ | 1.35 % | as of Feb 28, 2026 · Original filing |
| 10 | VANGUARD EXTENDED MARKET INDEX FUND VANGUARD INDEX FUNDS | 359,874 | 42.5M $ | 0.05 % | as of Mar 31, 2026 · Original filing |
| 11 | Bridge Builder Small/Mid Cap Growth Fund Bridge Builder Trust | 353,723 | 41.7M $ | 0.45 % | as of Mar 31, 2026 · Original filing |
| 12 | Artisan Mid Cap Fund Artisan Partners Funds Inc. | 335,747 | 39.6M $ | 1.34 % | as of Mar 31, 2026 · Original filing |
| 13 | Invesco Discovery Fund AIM Counselor Series Trust (Invesco Counselor Series Trust) | 326,976 | 43.7M $ | 0.66 % | as of Feb 28, 2026 · Original filing |
| 14 | Fidelity Small Cap Index Fund Fidelity Salem Street Trust | 315,166 | 40.7M $ | 0.13 % | as of Apr 30, 2026 · Original filing |
| 15 | Eventide Healthcare & Life Sciences Fund MUTUAL FUND SERIES TRUST | 277,739 | 32.8M $ | 2.06 % | as of Mar 31, 2026 · Original filing |
| 16 | iShares Russell 2000 Growth ETF iShares Trust | 260,640 | 30.8M $ | 0.25 % | as of Mar 31, 2026 · Original filing |
| 17 | JPMorgan Mid Cap Growth Fund JPMorgan Trust II | 224,092 | 26.4M $ | 0.23 % | as of Mar 31, 2026 · Original filing |
| 18 | Columbia Acorn Fund COLUMBIA ACORN TRUST | 169,788 | 20M $ | 0.89 % | as of Mar 31, 2026 · Original filing |
| 19 | Fidelity Extended Market Index Fund Fidelity Concord Street Trust | 169,003 | 22.6M $ | 0.06 % | as of Feb 28, 2026 · Original filing |
| 20 | VANGUARD RUSSELL 2000 INDEX FUND VANGUARD SCOTTSDALE FUNDS | 158,010 | 21.1M $ | 0.14 % | as of Feb 28, 2026 · Original filing |
| 21 | Schwab U.S. Small-Cap ETF SCHWAB STRATEGIC TRUST | 156,760 | 21M $ | 0.10 % | as of Feb 28, 2026 · Original filing |
| 22 | JPMorgan Small Cap Growth Fund JPMorgan Trust II | 148,244 | 17.5M $ | 0.80 % | as of Mar 31, 2026 · Original filing |
| 23 | Loomis Sayles Small Cap Growth Fund LOOMIS SAYLES FUNDS II | 142,860 | 16.9M $ | 0.88 % | as of Mar 31, 2026 · Original filing |
| 24 | iShares U.S. Medical Devices ETF iShares Trust | 138,828 | 16.4M $ | 0.52 % | as of Mar 31, 2026 · Original filing |
| 25 | Allspring SMID Cap Growth Fund ALLSPRING FUNDS TRUST | 134,779 | 15.9M $ | 1.97 % | as of Mar 31, 2026 · Original filing |
| 26 | BARON DISCOVERY FUND BARON INVESTMENT FUNDS TRUST (f/k/a BARON ASSET FUND) | 130,000 | 15.3M $ | 0.94 % | as of Mar 31, 2026 · Original filing |
| 27 | VANGUARD STRATEGIC EQUITY FUND VANGUARD HORIZON FUNDS | 122,864 | 14.5M $ | 0.14 % | as of Mar 31, 2026 · Original filing |
| 28 | ALGER SMALL CAP FOCUS FUND ALGER FUNDS | 118,092 | 15.3M $ | 1.93 % | as of Apr 30, 2026 · Original filing |
| 29 | MFS New Discovery Fund MFS SERIES TRUST I | 110,994 | 14.8M $ | 0.71 % | as of Feb 28, 2026 · Original filing |
| 30 | JNL Multi-Manager Small Cap Growth Fund JNL Series Trust | 107,434 | 12.7M $ | 0.64 % | as of Mar 31, 2026 · Original filing |
| 31 | VANGUARD HEALTH CARE INDEX FUND VANGUARD WORLD FUND | 96,472 | 12.9M $ | 0.06 % | as of Feb 28, 2026 · Original filing |
| 32 | Fidelity Advisor Health Care Fund Fidelity Advisor Series VII | 85,000 | 11M $ | 0.38 % | as of Apr 30, 2026 · Original filing |
| 33 | Fidelity Enhanced Small Cap ETF Fidelity Covington Trust | 80,562 | 9.5M $ | 0.23 % | as of Mar 31, 2026 · Original filing |
| 34 | Fidelity Small Cap Growth Fund Fidelity Securities Fund | 79,354 | 10.2M $ | 0.12 % | as of Apr 30, 2026 · Original filing |
| 35 | Artisan Small Cap Fund Artisan Partners Funds Inc. | 76,148 | 9M $ | 1.01 % | as of Mar 31, 2026 · Original filing |
| 36 | Schwab Small-Cap Index Fund SCHWAB CAPITAL TRUST | 69,837 | 9M $ | 0.12 % | as of Apr 30, 2026 · Original filing |
| 37 | Fidelity Advisor Small Cap Fund Fidelity Advisor Series I | 68,400 | 9.1M $ | 0.41 % | as of Feb 28, 2026 · Original filing |
| 38 | VIP Contrafund Portfolio Variable Insurance Products Fund II | 67,500 | 8M $ | 0.03 % | as of Mar 31, 2026 · Original filing |
| 39 | NVIT Allspring Discovery Fund Nationwide Variable Insurance Trust | 66,353 | 7.8M $ | 1.98 % | as of Mar 31, 2026 · Original filing |
| 40 | BlackRock Advantage Small Cap Core Fund BlackRock Funds | 65,972 | 8.8M $ | 0.19 % | as of Feb 27, 2026 · Original filing |
| 41 | Putnam Small Cap Growth Fund Putnam Funds Trust | 63,747 | 7.5M $ | 0.28 % | as of Mar 31, 2026 · Original filing |
| 42 | JNL/JPMorgan MidCap Growth Fund JNL Series Trust | 61,631 | 7.3M $ | 0.23 % | as of Mar 31, 2026 · Original filing |
| 43 | Fidelity Total Market Index Fund Fidelity Concord Street Trust | 60,053 | 8M $ | 0.01 % | as of Feb 28, 2026 · Original filing |
| 44 | Master Small Cap Index Series Quantitative Master Series LLC | 52,338 | 6.2M $ | 0.13 % | as of Mar 31, 2026 · Original filing |
| 45 | VANGUARD STRATEGIC SMALL-CAP EQUITY FUND VANGUARD HORIZON FUNDS | 51,781 | 6.1M $ | 0.25 % | as of Mar 31, 2026 · Original filing |
| 46 | Principal U.S. Small-Cap ETF Principal Exchange-Traded Funds | 51,115 | 6M $ | 0.34 % | as of Mar 31, 2026 · Original filing |
| 47 | JPMorgan Small Cap Blend Fund JPMorgan Trust I | 47,859 | 5.6M $ | 0.39 % | as of Mar 31, 2026 · Original filing |
| 48 | Fidelity Series Total Market Index Fund Fidelity Concord Street Trust | 47,624 | 6.4M $ | 0.01 % | as of Feb 28, 2026 · Original filing |
| 49 | Global Small Capitalization Fund AMERICAN FUNDS INSURANCE SERIES | 45,776 | 5.4M $ | 0.19 % | as of Mar 31, 2026 · Original filing |
| 50 | Allspring VT Small Cap Growth Fund Allspring VARIABLE TRUST | 45,131 | 5.3M $ | 2.02 % | as of Mar 31, 2026 · Original filing |
| 51 | Federated Hermes Kaufmann Small Cap Fund Federated Hermes Equity Funds | 43,200 | 5.6M $ | 0.19 % | as of Apr 30, 2026 · Original filing |
| 52 | iShares Core S&P Total U.S. Stock Market ETF iShares Trust | 41,690 | 4.9M $ | 0.01 % | as of Mar 31, 2026 · Original filing |
| 53 | American Beacon Stephens Small Cap Growth Fund AMERICAN BEACON FUNDS | 41,477 | 4.9M $ | 1.11 % | as of Mar 31, 2026 · Original filing |
| 54 | College Retirement Equities Fund - Total Global Stock Account College Retirement Equities Fund | 41,364 | 4.9M $ | 0.00 % | as of Mar 31, 2026 · Original filing |
| 55 | Federated Hermes MDT Small Cap Core Fund Federated Hermes MDT Series | 40,934 | 5.3M $ | 0.28 % | as of Apr 30, 2026 · Original filing |
| 56 | MFS New Discovery Series MFS VARIABLE INSURANCE TRUST | 39,989 | 4.7M $ | 0.67 % | as of Mar 31, 2026 · Original filing |
| 57 | Fidelity Small Cap Growth K6 Fund Fidelity Securities Fund | 39,980 | 5.2M $ | 0.12 % | as of Apr 30, 2026 · Original filing |
| 58 | ALGER WEATHERBIE SPECIALIZED GROWTH FUND ALGER FUNDS | 38,430 | 5M $ | 1.77 % | as of Apr 30, 2026 · Original filing |
| 59 | Nuveen Small Cap Blend Index Fund TIAA-CREF Funds | 38,265 | 4.9M $ | 0.13 % | as of Apr 30, 2026 · Original filing |
| 60 | Fidelity Series Small Cap Core Fund Fidelity Concord Street Trust | 37,398 | 4.8M $ | 0.30 % | as of Apr 30, 2026 · Original filing |
| 61 | Allspring Emerging Growth Fund ALLSPRING FUNDS TRUST | 36,200 | 4.7M $ | 1.44 % | as of Apr 30, 2026 · Original filing |
| 62 | EQ/2000 Managed Volatility Portfolio EQ Advisors Trust | 33,301 | 3.9M $ | 0.12 % | as of Mar 31, 2026 · Original filing |
| 63 | Columbia Variable Portfolio - Acorn Fund COLUMBIA FUNDS VARIABLE SERIES TRUST | 32,689 | 3.9M $ | 0.89 % | as of Mar 31, 2026 · Original filing |
| 64 | JPMorgan Mid Cap Equity Fund JPMorgan Trust I | 31,070 | 3.7M $ | 0.07 % | as of Mar 31, 2026 · Original filing |
| 65 | Allspring Small Company Growth Fund ALLSPRING FUNDS TRUST | 30,172 | 3.9M $ | 0.76 % | as of Apr 30, 2026 · Original filing |
| 66 | Small-Cap Growth Portfolio PACIFIC SELECT FUND | 30,043 | 3.5M $ | 0.80 % | as of Mar 31, 2026 · Original filing |
| 67 | Carillon Eagle Small Cap Growth Fund Carillon Series Trust | 29,868 | 3.5M $ | 0.87 % | as of Mar 31, 2026 · Original filing |
| 68 | State Street(R) SPDR(R) S&P Kensho New Economies Composite ETF SPDR SERIES TRUST | 29,867 | 3.5M $ | 0.15 % | as of Mar 31, 2026 · Original filing |
| 69 | HealthInvest Sustainable Healthcare Atle Fund Management AB | 29,692 | 33.2M SEK | 1.04 % | as of Mar 31, 2026 · Original filing |
| 70 | VANGUARD RUSSELL 2000 GROWTH INDEX FUND VANGUARD SCOTTSDALE FUNDS | 29,234 | 3.9M $ | 0.27 % | as of Feb 28, 2026 · Original filing |
| 71 | Small Cap Growth Stock Portfolio NORTHWESTERN MUTUAL SERIES FUND INC | 28,380 | 3.3M $ | 0.46 % | as of Mar 31, 2026 · Original filing |
| 72 | HUSSMAN STRATEGIC MARKET CYCLE FUND Hussman Investment Trust | 28,000 | 3.3M $ | 0.84 % | as of Mar 31, 2026 · Original filing |
| 73 | Goldman Sachs Small Cap Growth Fund Goldman Sachs Trust | 27,914 | 3.7M $ | 0.88 % | as of Feb 28, 2026 · Original filing |
| 74 | SMALL COMPANY GROWTH PORTFOLIO VANGUARD VARIABLE INSURANCE FUNDS | 26,861 | 3.2M $ | 0.23 % | as of Mar 31, 2026 · Original filing |
| 75 | Nuveen Equity Index Fund TIAA-CREF Funds | 25,226 | 3.3M $ | 0.01 % | as of Apr 30, 2026 · Original filing |
| 76 | VIP Health Care Portfolio Variable Insurance Products Fund IV | 25,000 | 3M $ | 0.29 % | as of Mar 31, 2026 · Original filing |
| 77 | Fidelity Small Cap Growth Index Fund Fidelity Salem Street Trust | 24,244 | 2.9M $ | 0.25 % | as of Mar 31, 2026 · Original filing |
| 78 | VANGUARD TOTAL WORLD STOCK INDEX FUND VANGUARD INTERNATIONAL EQUITY INDEX FUNDS | 23,935 | 3.1M $ | 0.00 % | as of Apr 30, 2026 · Original filing |
| 79 | HealthInvest Small & Mid Cap Healthcare Atle Fund Management AB | 23,347 | 26.1M SEK | 2.62 % | as of Mar 31, 2026 · Original filing |
| 80 | Loomis Sayles Small Cap Growth Portfolio Brighthouse Funds Trust II | 23,042 | 2.7M $ | 0.86 % | as of Mar 31, 2026 · Original filing |
| 81 | Federated Hermes MDT Small Cap Growth Fund Federated Hermes MDT Series | 22,103 | 2.9M $ | 0.38 % | as of Apr 30, 2026 · Original filing |
| 82 | Multi-Manager Small Cap Equity Strategies Fund COLUMBIA FUNDS SERIES TRUST I | 22,015 | 2.9M $ | 0.24 % | as of Feb 28, 2026 · Original filing |
| 83 | Fidelity Small-Mid Multifactor ETF Fidelity Covington Trust | 21,973 | 2.8M $ | 0.12 % | as of Apr 30, 2026 · Original filing |
| 84 | DWS Large Cap Focus Growth Fund DEUTSCHE DWS INVESTMENT TRUST | 21,800 | 2.8M $ | 0.72 % | as of Apr 30, 2026 · Original filing |
| 85 | Strategic Advisers Fidelity U.S. Total Stock Fund Fidelity Rutland Square Trust II | 21,650 | 2.9M $ | 0.00 % | as of Feb 28, 2026 · Original filing |
| 86 | Allspring VT Discovery SMID Cap Growth Fund Allspring VARIABLE TRUST | 21,582 | 2.5M $ | 1.97 % | as of Mar 31, 2026 · Original filing |
| 87 | LVIP SSGA Small-Cap Index Fund LINCOLN VARIABLE INSURANCE PRODUCTS TRUST | 21,450 | 2.5M $ | 0.13 % | as of Mar 31, 2026 · Original filing |
| 88 | Optimum Small-Mid Cap Growth Fund Optimum Fund Trust | 21,238 | 2.5M $ | 0.33 % | as of Mar 31, 2026 · Original filing |
| 89 | HARTFORD SMALL CAP GROWTH HLS FUND HARTFORD SERIES FUND INC | 20,427 | 2.4M $ | 0.46 % | as of Mar 31, 2026 · Original filing |
| 90 | AST Small-Cap Equity Portfolio Advanced Series Trust | 19,900 | 2.3M $ | 0.13 % | as of Mar 31, 2026 · Original filing |
| 91 | MOA SMALL CAP GROWTH FUND MoA Funds Corp | 19,785 | 2.3M $ | 0.56 % | as of Mar 31, 2026 · Original filing |
| 92 | State Street(R) SPDR(R) S&P(R) Health Care Equipment ETF SPDR SERIES TRUST | 19,657 | 2.3M $ | 1.72 % | as of Mar 31, 2026 · Original filing |
| 93 | Fidelity Nasdaq Composite Index Fund Fidelity Concord Street Trust | 19,537 | 2.6M $ | 0.01 % | as of Feb 28, 2026 · Original filing |
| 94 | Schwab Total Stock Market Index Fund SCHWAB CAPITAL TRUST | 19,106 | 2.5M $ | 0.01 % | as of Apr 30, 2026 · Original filing |
| 95 | Mid Cap Growth Stock Portfolio NORTHWESTERN MUTUAL SERIES FUND INC | 19,037 | 2.2M $ | 0.23 % | as of Mar 31, 2026 · Original filing |
| 96 | FundX Future Fund Opportunities ETF FundX Investment Trust | 18,878 | 2.2M $ | 1.13 % | as of Mar 31, 2026 · Original filing |
| 97 | Victory RS Small Cap Growth Fund Victory Portfolios | 18,550 | 2.2M $ | 0.66 % | as of Mar 31, 2026 · Original filing |
| 98 | Schwab U.S. Broad Market ETF SCHWAB STRATEGIC TRUST | 18,379 | 2.5M $ | 0.01 % | as of Feb 28, 2026 · Original filing |
| 99 | Neuberger Small Cap Growth Fund NEUBERGER BERMAN EQUITY FUNDS | 18,043 | 2.4M $ | 0.50 % | as of Feb 28, 2026 · Original filing |
| 100 | VANGUARD BALANCED INDEX FUND VANGUARD VALLEY FORGE FUNDS | 18,017 | 2.1M $ | 0.00 % | as of Mar 31, 2026 · Original filing |
Institutional managers
296 managers declare this company to the SEC (Form 13F). These positions are not counted in the totals above: a manager and its own funds file separately.
| Manager | Shares | Value | |
|---|---|---|---|
| BlackRock, Inc. | 2,741,505 | 323.6M $ | as of Mar 31, 2026 |
| RTW INVESTMENTS, LP | 1,668,500 | 196.9M $ | as of Mar 31, 2026 |
| MILLENNIUM MANAGEMENT LLC | 1,608,014 | 189.8M $ | as of Mar 31, 2026 |
| Artisan Partners Limited Partnership | 1,450,907 | 171.2M $ | as of Mar 31, 2026 |
| FMR LLC | 1,361,919 | 160.7M $ | as of Mar 31, 2026 |
| Holocene Advisors, LP | 1,248,658 | 147.4M $ | as of Mar 31, 2026 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 1,047,452 | 123.6M $ | as of Mar 31, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | 817,110 | 96.5M $ | as of Mar 31, 2026 |
| STATE STREET CORP | 788,302 | 93M $ | as of Mar 31, 2026 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 762,062 | 89.9M $ | as of Mar 31, 2026 |
| EVENTIDE ASSET MANAGEMENT, LLC | 760,825 | 89.8M $ | as of Mar 31, 2026 |
| JPMORGAN CHASE & CO | 714,896 | 81.6M $ | as of Mar 31, 2026 |
| FULLER & THALER ASSET MANAGEMENT, INC. | 674,698 | 79.6M $ | as of Mar 31, 2026 |
| BLAIR WILLIAM & CO/IL | 628,385 | 74.2M $ | as of Mar 31, 2026 |
| BRAIDWELL LP | 610,192 | 72M $ | as of Mar 31, 2026 |
| Point72 Asset Management, L.P. | 599,405 | 70.7M $ | as of Mar 31, 2026 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 582,879 | 68.8M $ | as of Mar 31, 2026 |
| Stephens Investment Management Group LLC | 561,530 | 66.3M $ | as of Mar 31, 2026 |
| D. E. Shaw & Co., Inc. | 554,266 | 65.4M $ | as of Mar 31, 2026 |
| Capital Research Global Investors | 509,590 | 60.1M $ | as of Mar 31, 2026 |
| Allspring Global Investments Holdings, LLC | 467,113 | 55.2M $ | as of Mar 31, 2026 |
| BANK OF AMERICA CORP /DE/ | 432,539 | 51M $ | as of Mar 31, 2026 |
| Polar Capital Holdings Plc | 421,612 | 49.8M $ | as of Mar 31, 2026 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | 390,577 | 46.1M $ | as of Mar 31, 2026 |
| MACKENZIE FINANCIAL CORP | 371,475 | 43.8M $ | as of Mar 31, 2026 |