Security record · archived quarter
IRTC
iRhythm Technologies, Inc. · Healthcare · Medical - Devices
110Tracked holders
-1Δ holders
25.32MShares held
$4.49BReported value
+2New positions
−2Exits
Momentum inputs (comparable managers):
holder breadth -0.9% ·
share flow +2.5% ·
net new positions 0.0%
· formula
Concentrated accumulation: rising shares among fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 2025
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 2 | 0 | 20.77K | $2.36M | n/a | n/a |
| Q2 2026 | 104 | -6 | 23.67M | $2.82B | +4 | −9 |
| Q1 2026 | 112 | +1 | 25.32M | $2.99B | +11 | −11 |
| Q4 2025 | 110 | -1 | 25.32M | $4.49B | +2 | −2 |
| Q3 2025 | 21 | +1 | 12.24M | $2.10B | +1 | n/a |
| Q2 2025 | 17 | +4 | 9.71M | $1.50B | +4 | n/a |
| Q1 2025 | 10 | +1 | 2.81M | $294.19M | +2 | −1 |
| Q4 2024 | 9 | -1 | 2.41M | $217.31M | +2 | −3 |
| Q3 2024 | 9 | +1 | 1.67M | $124.10M | +2 | −1 |
| Q2 2024 | 8 | n/a | 2.43M | $261.78M | n/a | n/a |
Who holds it · Q4 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | The Vanguard Group ✦ (passive) | 3.31M | +2.2% | $587.42M | 0.0% | ▲ Add | 3 | SEC ↗ ×5 |
| 2 | BlackRock ✦ (passive) | 2.81M | -2.1% | $499.31M | 0.0% | ▼ Trim | 3 | SEC ↗ ×17 |
| 3 | Artisan Partners Limited Partnership | 1.51M | n/a | $268.29M | 0.4% | n/c | 1 | SEC ↗ |
| 4 | Capital Research Global Investors | 1.18M | n/a | $210.22M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | Geode Capital Management ✦ (passive) | 858.40K | +8.6% | $152.34M | 0.0% | ▲ Add | 7 | SEC ↗ ×2 |
| 6 | UBS AM, a distinct business unit of… | 829.86K | n/a | $147.25M | 0.0% | n/c | 1 | SEC ↗ ×9 |
| 7 | Millennium Management ✦ | 826.38K | +197.4% | $146.63M | 0.1% | ▲ Add | 7 | SEC ↗ |
| 8 | State Street Global Advisors ✦ (passive) | 764.84K | -9.8% | $135.71M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 9 | JPMorgan Chase ✦ | 758.59K | -13.7% | $134.60M | 0.0% | ▼ Trim | 2 | SEC ↗ ×6 |
| 10 | Blair William & Co/Il | 718.80K | n/a | $127.54M | 0.3% | n/c | 1 | SEC ↗ |
| 11 | Holocene Advisors, LP | 683.57K | n/a | $121.29M | 0.3% | n/c | 1 | SEC ↗ |
| 12 | Fidelity (FMR) ✦ | 628.77K | +0.8% | $111.57M | 0.0% | ▲ Add | 3 | SEC ↗ ×4 |
| 13 | Arrowstreet Capital ✦ | 606.97K | +12.2% | $107.70M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 14 | BNP Paribas Asset Management… | 583.01K | n/a | $103.45M | 0.1% | n/c | 1 | SEC ↗ ×2 |
| 15 | T. Rowe Price ✦ | 502.12K | +47.8% | $89.10M | 0.0% | ▲ Add | 7 | SEC ↗ ×2 |
| 16 | Invesco Ltd. | 498.38K | n/a | $88.43M | 0.0% | n/c | 1 | SEC ↗ ×7 |
| 17 | Wellington Management ✦ | 408.26K | -3.4% | $72.44M | 0.0% | ▼ Trim | 7 | SEC ↗ ×4 |
| 18 | Allspring Global Investments… | 407.41K | n/a | $71.39M | 0.1% | n/c | 1 | SEC ↗ ×3 |
| 19 | Loomis Sayles & Co L P | 392.08K | n/a | $69.57M | 0.1% | n/c | 1 | SEC ↗ ×2 |
| 20 | D. E. Shaw & Co. ✦ | 360.67K | +7.0% | $64.00M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 21 | Bank Of America Corp /De/ | 354.77K | n/a | $62.95M | 0.0% | n/c | 1 | SEC ↗ ×7 |
| 22 | Mackenzie Financial Corp | 347.30K | n/a | $61.90M | 0.1% | n/c | 1 | SEC ↗ |
| 23 | Goldman Sachs Group ✦ | 329.13K | +1.8% | $58.40M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 24 | Charles Schwab Investment… | 286.12K | n/a | $50.77M | 0.0% | n/c | 1 | SEC ↗ |
| 25 | Northern Trust Corp | 279.07K | n/a | $49.52M | 0.0% | n/c | 1 | SEC ↗ ×6 |
| 26 | Assenagon Asset Management S.A. | 225.21K | n/a | $39.96M | 0.1% | n/c | 1 | SEC ↗ |
| 27 | Point72 Asset Management ✦ | 219.47K | -37.0% | $38.94M | 0.1% | ▼ Trim | 4 | SEC ↗ |
| 28 | Sei Investments Co | 203.35K | n/a | $36.08M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 29 | Manufacturers Life Insurance… | 196.07K | n/a | $34.79M | 0.0% | n/c | 1 | SEC ↗ |
| 30 | Barclays Plc | 193.97K | n/a | $34.42M | 0.0% | n/c | 1 | SEC ↗ ×4 |
| 31 | Jane Street Group, Llc | 192.39K | n/a | $34.14M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 32 | Citigroup Inc | 190.34K | n/a | $33.77M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 33 | Deutsche Bank Ag\ | 187.66K | n/a | $33.30M | 0.0% | n/c | 1 | SEC ↗ ×4 |
| 34 | Morgan Stanley ✦ | 169.99K | +9.8% | $30.16M | 0.0% | ▲ Add | 2 | SEC ↗ ×10 |
| 35 | Balyasny Asset Management L.P. | 167.27K | n/a | $29.68M | 0.1% | n/c | 1 | SEC ↗ |
| 36 | Raymond James Financial Inc | 153.81K | n/a | $27.43M | 0.0% | n/c | 1 | SEC ↗ ×4 |
| 37 | UBS Group AG | 153.22K | n/a | $27.19M | 0.0% | n/c | 1 | SEC ↗ ×4 |
| 38 | Massachusetts Financial Services Co… | 150.28K | n/a | $26.67M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 39 | Qube Research & Technologies Ltd | 144.61K | n/a | $25.66M | 0.0% | n/c | 1 | SEC ↗ |
| 40 | Jennison Associates Llc | 139.06K | n/a | $24.67M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 41 | Nuveen, LLC | 133.68K | n/a | $23.72M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 42 | New York State Common Retirement… | 129.73K | n/a | $23.02M | 0.0% | n/c | 1 | SEC ↗ |
| 43 | Adage Capital Partners ✦ | 125.00K | +150.0% | $22.18M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 44 | Ameriprise Financial Inc | 123.62K | n/a | $21.94M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 45 | Franklin Resources Inc | 118.58K | n/a | $21.04M | 0.0% | n/c | 1 | SEC ↗ ×6 |
| 46 | Bank of New York Mellon Corp | 112.12K | n/a | $19.89M | 0.0% | n/c | 1 | SEC ↗ ×9 |
| 47 | Federated Hermes, Inc. | 106.41K | n/a | $18.88M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 48 | Renaissance Technologies ✦ | 103.90K | -14.4% | $18.44M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 49 | Squarepoint Ops LLC | 93.71K | n/a | $16.63M | 0.0% | n/c | 1 | SEC ↗ |
| 50 | Wcm Investment Management, Llc | 73.29K | n/a | $13.09M | 0.0% | n/c | 1 | SEC ↗ |
| 51 | Bnp Paribas Financial Markets | 73.65K | n/a | $13.07M | 0.0% | n/c | 1 | SEC ↗ |
| 52 | Principal Financial Group Inc | 69.42K | n/a | $12.32M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 53 | Swiss National Bank | 63.40K | n/a | $11.25M | 0.0% | n/c | 1 | SEC ↗ |
| 54 | First Trust Advisors Lp | 60.80K | n/a | $10.79M | 0.0% | n/c | 1 | SEC ↗ |
| 55 | Norges Bank ✦ (passive) | 56.24K | New | $9.98M | 0.0% | New | 1 | SEC ↗ |
| 56 | Man Group plc | 56.20K | n/a | $9.97M | 0.0% | n/c | 1 | SEC ↗ |
| 57 | Legal & General Group Plc | 52.07K | n/a | $9.24M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 58 | State Of Wisconsin Investment Board | 51.15K | n/a | $9.08M | 0.0% | n/c | 1 | SEC ↗ |
| 59 | Wells Fargo & Company/Mn | 45.29K | n/a | $8.04M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 60 | Victory Capital Management Inc | 43.22K | n/a | $7.67M | 0.0% | n/c | 1 | SEC ↗ |
| 61 | Connor, Clark & Lunn Investment… | 42.12K | n/a | $7.47M | 0.0% | n/c | 1 | SEC ↗ |
| 62 | Rhumbline Advisers | 40.61K | n/a | $7.21M | 0.0% | n/c | 1 | SEC ↗ |
| 63 | Prudential Financial Inc | 40.42K | n/a | $7.17M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 64 | AQR Capital Management ✦ | 40.16K | +27.8% | $7.13M | 0.0% | ▲ Add | 5 | SEC ↗ ×6 |
| 65 | Nomura Asset Management… | 39.75K | n/a | $7.05M | 0.0% | n/c | 1 | SEC ↗ |
| 66 | Universal- Beteiligungs- und… | 38.53K | n/a | $6.84M | 0.0% | n/c | 1 | SEC ↗ |
| 67 | Alliancebernstein L.P. | 37.49K | n/a | $6.65M | 0.0% | n/c | 1 | SEC ↗ |
| 68 | Hsbc Holdings Plc | 34.05K | n/a | $6.09M | 0.0% | n/c | 1 | SEC ↗ ×4 |
| 69 | Ensign Peak Advisors, Inc | 33.94K | n/a | $6.02M | 0.0% | n/c | 1 | SEC ↗ |
| 70 | Amundi | 33.41K | n/a | $5.93M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 71 | Neuberger Berman Group LLC | 31.20K | n/a | $5.54M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 72 | California State Teachers… | 30.56K | n/a | $5.42M | 0.0% | n/c | 1 | SEC ↗ |
| 73 | Canada Pension Plan Investment Board | 30.10K | n/a | $5.34M | 0.0% | n/c | 1 | SEC ↗ |
| 74 | Russell Investments Group, Ltd. | 30.02K | n/a | $5.33M | 0.0% | n/c | 1 | SEC ↗ ×6 |
| 75 | MIRAE ASSET GLOBAL ETFS HOLDINGS… | 25.80K | n/a | $4.58M | 0.0% | n/c | 1 | SEC ↗ |
| 76 | Envestnet Asset Management Inc | 23.20K | n/a | $4.12M | 0.0% | n/c | 1 | SEC ↗ |
| 77 | Creative Planning | 14.15K | n/a | $2.51M | 0.0% | n/c | 1 | SEC ↗ |
| 78 | Janus Henderson Group Plc | 13.86K | n/a | $2.46M | 0.0% | n/c | 1 | SEC ↗ |
| 79 | Royal Bank Of Canada | 11.98K | n/a | $2.13M | 0.0% | n/c | 1 | SEC ↗ ×5 |
| 80 | Bridgewater Associates ✦ | 11.35K | New | $2.01M | 0.0% | New | 1 | SEC ↗ |
| 81 | Voya Investment Management Llc | 9.47K | n/a | $1.68M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 82 | Zurcher Kantonalbank (Zurich… | 9.05K | n/a | $1.61M | 0.0% | n/c | 1 | SEC ↗ |
| 83 | State Board Of Administration Of… | 8.58K | n/a | $1.52M | 0.0% | n/c | 1 | SEC ↗ |
| 84 | Baird Financial Group, Inc. | 6.50K | n/a | $1.15M | 0.0% | n/c | 1 | SEC ↗ |
| 85 | ProShare Advisors LLC | 5.94K | n/a | $1.05M | 0.0% | n/c | 1 | SEC ↗ |
| 86 | Captrust Financial Advisors | 5.80K | n/a | $1.03M | 0.0% | n/c | 1 | SEC ↗ |
| 87 | Pictet Asset Management Holding SA | 4.91K | n/a | $871,585 | 0.0% | n/c | 1 | SEC ↗ |
| 88 | Susquehanna International Group, Llp | 4.76K | n/a | $844,437 | 0.0% | n/c | 1 | SEC ↗ |
| 89 | Truist Financial Corp | 3.60K | n/a | $638,251 | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 90 | Marshall Wace ✦ | 3.56K | +182.2% | $632,396 | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 91 | Pnc Financial Services Group, Inc. | 3.31K | n/a | $586,617 | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 92 | LPL Financial LLC | 3.27K | n/a | $581,116 | 0.0% | n/c | 1 | SEC ↗ |
| 93 | Mariner, LLC | 2.98K | n/a | $527,628 | 0.0% | n/c | 1 | SEC ↗ |
| 94 | Mitsubishi UFJ Asset Management… | 2.75K | n/a | $481,855 | 0.0% | n/c | 1 | SEC ↗ |
| 95 | Allianz Asset Management GmbH | 2.50K | n/a | $443,600 | 0.0% | n/c | 1 | SEC ↗ |
| 96 | Sumitomo Mitsui Trust Group, Inc. | 2.35K | n/a | $416,984 | 0.0% | n/c | 1 | SEC ↗ |
| 97 | Gotham Asset Management ✦ | 2.02K | -90.5% | $357,896 | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 98 | Corient Private Wealth LP | 1.76K | n/a | $313,078 | 0.0% | n/c | 1 | SEC ↗ |
| 99 | Osaic Holdings, Inc. | 1.65K | n/a | $292,563 | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 100 | Bank Of Montreal /Can/ | 1.48K | n/a | $262,967 | 0.0% | n/c | 1 | SEC ↗ ×3 |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| Norges Bank | $9.98M | 0.0% |
| Bridgewater Associates | $2.01M | 0.0% |
Exited
| Citadel Advisors | $1.53M | was 0.0% |
| Two Sigma Investments | $361,179 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 300 holders, 34.72M shares, $4.07B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold: shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Aug 10
Blackford Quentin S.
Officer, Director · 26.86K sh · $3.35M
Aug 10
Murphy Patrick Michael
Officer · 7.09K sh · $884,156
Aug 10
Patterson Chad
Officer · 7.09K sh · $884,170
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
Oct 13
SC 13G/A: MILLENNIUM MANAGEMENT LLC
Aug 14
SC 13G/A: RTW INVESTMENTS, LP
Aug 13
SC 13G: Artisan Partners Limited Partnership
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q4 2025 ·
Methodology ·
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