IRHYTHM TECHNOLOGIES INC COM is a security (CUSIP 450056106) tracked across SEC portfolio filings. 312 institutional managers reported $4.3B on Form 13F as of 2026-06-30; 33 registered fund positions totaling $252.6M via N-PORT as of 2026-05-31.
Showing 15 of 312 managers by value.
| Manager | Location | Value | Shares |
|---|---|---|---|
| VANGUARD GROUP INC | Valley Forge, PA | $587.4M | 3,310,519 |
| BlackRock, Inc. | New York, NY | $323.6M | 2,741,505 |
| MILLENNIUM MANAGEMENT LLC | NEW YORK, NY | $197.2M | 1,608,014 |
| RTW INVESTMENTS, LP | NEW YORK, NY | $196.9M | 1,668,500 |
| Artisan Partners Limited Partnership | Milwaukee, WI | $171.2M | 1,450,907 |
| FMR LLC | BOSTON, MA | $160.7M | 1,361,919 |
| Holocene Advisors, LP | New York, NY | $147.4M | 1,248,658 |
| UBS ASSET MANAGEMENT AMERICAS INC | CHICAGO, IL | $123.6M | 1,047,452 |
| GEODE CAPITAL MANAGEMENT, LLC | BOSTON, MA | $96.5M | 817,110 |
| STATE STREET CORP | BOSTON, MA | $93.0M | 788,302 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | Paris, I0 | $89.9M | 762,062 |
| EVENTIDE ASSET MANAGEMENT, LLC | Boston, MA | $89.8M | 760,825 |
| Stephens Investment Management Group LLC | LITTLE ROCK, AR | $82.5M | 693,437 |
| JPMORGAN CHASE & CO | NEW YORK, NY | $81.6M | 714,896 |
| FULLER & THALER ASSET MANAGEMENT, INC. | San Mateo, CA | $79.6M | 674,698 |
Showing 15 of 33 fund positions by value.
| Fund | Registrant | Value | % of fund |
|---|---|---|---|
| VANGUARD EXPLORER FUND | VANGUARD EXPLORER FUND | $59.2M | 27.21% |
| SMALLCAP World Fund Inc | SMALLCAP World Fund Inc | $54.7M | 6.75% |
| VANGUARD EXTENDED MARKET INDEX FUND | VANGUARD INDEX FUNDS | $42.5M | 5.21% |
| Columbia Acorn Fund | COLUMBIA ACORN TRUST | $20.0M | 89.24% |
| VANGUARD RUSSELL 2000 INDEX FUND | VANGUARD SCOTTSDALE FUNDS | $18.7M | 10.64% |
| VANGUARD STRATEGIC EQUITY FUND | VANGUARD HORIZON FUNDS | $14.5M | 14.33% |
| Fidelity Advisor Health Care Fund | Fidelity Advisor Series VII | $11.0M | 38.03% |
| Master Small Cap Index Series | Quantitative Master Series LLC | $6.2M | 12.81% |
| HARTFORD SMALL CAP GROWTH HLS FUND | HARTFORD HLS SERIES FUND II INC | $5.7M | 74.42% |
| Liberty All-Star Growth Fund | LIBERTY ALL STAR GROWTH FUND INC. | $3.9M | 114.99% |
| Small Cap Growth Fund | VALIC Co II | $3.0M | 101.36% |
| Optimum Small-Mid Cap Growth Fund | Optimum Fund Trust | $2.5M | 33.05% |
| VANGUARD BALANCED INDEX FUND | VANGUARD VALLEY FORGE FUNDS | $2.1M | 0.36% |
| Embark Small Cap Equity Fund | Harbor Funds II | $2.0M | 35.11% |
| VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND | VANGUARD INSTITUTIONAL INDEX FUNDS | $1.8M | 0.60% |