Security record
IRTC
iRhythm Technologies, Inc. · Healthcare · Medical - Devices
105Tracked holders
-5Δ holders
23.67MShares held
$2.82BReported value
+4New positions
−8Exits
Momentum inputs (comparable managers):
holder breadth -4.5% ·
share flow -6.9% ·
net new positions -3.8%
— formula
Broad distribution — falling shares and fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2026
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 105 | -5 | 23.67M | $2.82B | +4 | −8 |
| 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 | — |
| Q2 2025 | 17 | +4 | 9.71M | $1.50B | +4 | — |
| 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 | — | 2.43M | $261.78M | — | — |
Who holds it · Q2 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 2.99M | +8.9% | $355.15M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 2.99M | +8.9% | $355.15M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 2.99M | +8.9% | $355.15M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 2.99M | +8.9% | $355.15M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 2.99M | +8.9% | $355.15M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 2.99M | +8.9% | $355.15M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 2.99M | +8.9% | $355.15M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 2.99M | +8.9% | $355.15M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 2.99M | +8.9% | $355.15M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 2.99M | +8.9% | $355.15M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 2.99M | +8.9% | $355.15M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 2.99M | +8.9% | $355.15M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 2.99M | +8.9% | $355.15M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 2.99M | +8.9% | $355.15M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 2.99M | +8.9% | $355.15M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 16 | BlackRock ✦ (passive) | 2.99M | +8.9% | $355.15M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 17 | Artisan Partners Limited Partnership | 1.66M | +14.4% | $197.49M | 0.3% | ▲ Add | 3 | SEC ↗ |
| 18 | Vanguard Capital Management Llc | 1.46M | +1.2% | $174.05M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 19 | Millennium Management ✦ | 1.41M | -12.5% | $167.30M | 0.1% | ▼ Trim | 9 | SEC ↗ |
| 20 | Fidelity (FMR) ✦ | 1.19M | -12.5% | $141.79M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 21 | Fidelity (FMR) ✦ | 1.19M | -12.5% | $141.79M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 22 | Fidelity (FMR) ✦ | 1.19M | -12.5% | $141.79M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 23 | Fidelity (FMR) ✦ | 1.19M | -12.5% | $141.79M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 24 | UBS AM, a distinct business unit of… | 944.52K | -9.8% | $112.35M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 25 | UBS AM, a distinct business unit of… | 944.52K | -9.8% | $112.35M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 26 | UBS AM, a distinct business unit of… | 944.52K | -9.8% | $112.35M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 27 | UBS AM, a distinct business unit of… | 944.52K | -9.8% | $112.35M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 28 | UBS AM, a distinct business unit of… | 944.52K | -9.8% | $112.35M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 29 | UBS AM, a distinct business unit of… | 944.52K | -9.8% | $112.35M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 30 | UBS AM, a distinct business unit of… | 944.52K | -9.8% | $112.35M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 31 | UBS AM, a distinct business unit of… | 944.52K | -9.8% | $112.35M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 32 | UBS AM, a distinct business unit of… | 944.52K | -9.8% | $112.35M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 33 | Geode Capital Management ✦ (passive) | 881.90K | +7.9% | $104.92M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 34 | Geode Capital Management ✦ (passive) | 881.90K | +7.9% | $104.92M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 35 | BNP Paribas Asset Management… | 866.53K | +13.7% | $103.07M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 36 | BNP Paribas Asset Management… | 866.53K | +13.7% | $103.07M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 37 | State Street Global Advisors ✦ (passive) | 856.52K | +8.7% | $101.88M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 38 | Holocene Advisors, LP | 783.64K | -37.2% | $93.21M | 0.2% | ▼ Trim | 3 | SEC ↗ |
| 39 | JPMorgan Chase ✦ | 766.22K | +7.2% | $90.92M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 40 | JPMorgan Chase ✦ | 766.22K | +7.2% | $90.92M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 41 | JPMorgan Chase ✦ | 766.22K | +7.2% | $90.92M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 42 | JPMorgan Chase ✦ | 766.22K | +7.2% | $90.92M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 43 | JPMorgan Chase ✦ | 766.22K | +7.2% | $90.92M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 44 | JPMorgan Chase ✦ | 766.22K | +7.2% | $90.92M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 45 | D. E. Shaw & Co. ✦ | 629.69K | +13.6% | $74.90M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 46 | Manufacturers Life Insurance… | 561.25K | +43.7% | $66.76M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 47 | Blair William & Co/Il | 524.69K | -16.5% | $62.41M | 0.2% | ▼ Trim | 3 | SEC ↗ |
| 48 | Bank Of America Corp /De/ | 465.72K | +7.7% | $55.40M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 49 | Bank Of America Corp /De/ | 465.72K | +7.7% | $55.40M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 50 | Bank Of America Corp /De/ | 465.72K | +7.7% | $55.40M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 51 | Bank Of America Corp /De/ | 465.72K | +7.7% | $55.40M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 52 | Bank Of America Corp /De/ | 465.72K | +7.7% | $55.40M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 53 | Arrowstreet Capital ✦ | 450.87K | -22.6% | $53.63M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 54 | Schroder Investment Management Group | 448.26K | +80.9% | $53.08M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 55 | Goldman Sachs Group ✦ | 362.35K | +4.0% | $43.10M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 56 | Goldman Sachs Group ✦ | 362.35K | +4.0% | $43.10M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 57 | Goldman Sachs Group ✦ | 362.35K | +4.0% | $43.10M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 58 | Goldman Sachs Group ✦ | 362.35K | +4.0% | $43.10M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 59 | Loomis Sayles & Co L P | 347.96K | -5.4% | $41.39M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 60 | Loomis Sayles & Co L P | 347.96K | -5.4% | $41.39M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 61 | Capital Research Global Investors | 335.21K | -34.2% | $39.87M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 62 | Allspring Global Investments… | 300.06K | -35.8% | $37.37M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 63 | Allspring Global Investments… | 300.06K | -35.8% | $37.37M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 64 | Allspring Global Investments… | 300.06K | -35.8% | $37.37M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 65 | Northern Trust Corp | 308.00K | +8.0% | $36.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 66 | Northern Trust Corp | 308.00K | +8.0% | $36.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 67 | Northern Trust Corp | 308.00K | +8.0% | $36.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 68 | Northern Trust Corp | 308.00K | +8.0% | $36.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 69 | Northern Trust Corp | 308.00K | +8.0% | $36.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 70 | Charles Schwab Investment… | 298.30K | +5.8% | $35.48M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 71 | Ameriprise Financial Inc | 292.51K | +23.5% | $34.79M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 72 | Ameriprise Financial Inc | 292.51K | +23.5% | $34.79M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 73 | Ameriprise Financial Inc | 292.51K | +23.5% | $34.79M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 74 | Jane Street Group, Llc | 275.26K | +143.9% | $32.74M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 75 | Jane Street Group, Llc | 275.26K | +143.9% | $32.74M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 76 | Point72 Asset Management ✦ | 273.16K | -54.4% | $32.49M | 0.1% | ▼ Trim | 6 | SEC ↗ |
| 77 | Qube Research & Technologies Ltd | 271.62K | +19.7% | $32.31M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 78 | Citigroup Inc | 249.40K | +7.4% | $29.67M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 79 | Citigroup Inc | 249.40K | +7.4% | $29.67M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 80 | Citigroup Inc | 249.40K | +7.4% | $29.67M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 81 | Deutsche Bank Ag\ | 238.19K | +10.4% | $28.33M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 82 | Deutsche Bank Ag\ | 238.19K | +10.4% | $28.33M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 83 | Deutsche Bank Ag\ | 238.19K | +10.4% | $28.33M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 84 | Deutsche Bank Ag\ | 238.19K | +10.4% | $28.33M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 85 | Barclays Plc | 191.80K | +1.8% | $22.81M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 86 | Barclays Plc | 191.80K | +1.8% | $22.81M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 87 | Bamco Inc /Ny/ | 181.43K | -1.3% | $21.58M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 88 | Sei Investments Co | 178.76K | -10.1% | $21.26M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 89 | Sei Investments Co | 178.76K | -10.1% | $21.26M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 90 | Massachusetts Financial Services Co… | 166.00K | -0.4% | $19.75M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 91 | Massachusetts Financial Services Co… | 166.00K | -0.4% | $19.75M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 92 | Norges Bank ✦ (passive) | 148.07K | New | $17.61M | 0.0% | New | 1 | SEC ↗ |
| 93 | Morgan Stanley ✦ | 148.00K | -37.8% | $17.60M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 94 | Morgan Stanley ✦ | 148.00K | -37.8% | $17.60M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 95 | Morgan Stanley ✦ | 148.00K | -37.8% | $17.60M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 96 | Morgan Stanley ✦ | 148.00K | -37.8% | $17.60M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 97 | Morgan Stanley ✦ | 148.00K | -37.8% | $17.60M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 98 | Morgan Stanley ✦ | 148.00K | -37.8% | $17.60M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 99 | Morgan Stanley ✦ | 148.00K | -37.8% | $17.60M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 100 | Raymond James Financial Inc | 135.26K | -6.8% | $16.09M | 0.0% | ▼ Trim | 3 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Norges Bank | $17.61M | 0.0% |
Exited
| Mackenzie Financial Corp | $43.84M | was 0.1% |
| Two Sigma Investments | $6.21M | was 0.0% |
| Corient Private Wealth LP | $1.81M | was 0.0% |
| Adage Capital Partners | $978,268 | was 0.0% |
| Truist Financial Corp | $319,716 | was 0.0% |
| Walleye Trading LLC | $96,894 | was 0.0% |
| LMR Partners LLP | $54,643 | was 0.0% |
| Northwestern Mutual Wealth… | $8,497 | 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
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: Q2 2026 ·
Methodology ·
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