Security record
ATRC
AtriCure, Inc. · Healthcare · Medical - Instruments & Supplies
102Tracked holders
+5Δ holders
36.09MShares held
$1.01BReported value
+10New positions
−5Exits
Momentum inputs (comparable managers):
holder breadth +5.2% ·
share flow +3.0% ·
net new positions +4.9%
— formula
Broad accumulation — rising shares across more 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 | 102 | +5 | 36.09M | $1.01B | +10 | −5 |
| Q1 2026 | 100 | +5 | 35.01M | $1.03B | +10 | −6 |
| Q4 2025 | 96 | +1 | 36.16M | $1.43B | +2 | — |
| Q3 2025 | 17 | -1 | 19.38M | $683.04M | — | −2 |
| Q2 2025 | 16 | -1 | 18.32M | $600.37M | — | −1 |
| Q1 2025 | 14 | 0 | 6.98M | $225.02M | +1 | −1 |
| Q4 2024 | 14 | +1 | 5.72M | $174.87M | +2 | −1 |
| Q3 2024 | 12 | -1 | 4.89M | $137.07M | — | −1 |
| Q2 2024 | 13 | — | 5.61M | $127.65M | — | — |
Who holds it · Q2 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 4.47M | +10.7% | $125.20M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 4.47M | +10.7% | $125.20M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 4.47M | +10.7% | $125.20M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 4.47M | +10.7% | $125.20M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 4.47M | +10.7% | $125.20M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 4.47M | +10.7% | $125.20M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 4.47M | +10.7% | $125.20M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 4.47M | +10.7% | $125.20M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 4.47M | +10.7% | $125.20M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 4.47M | +10.7% | $125.20M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 4.47M | +10.7% | $125.20M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 4.47M | +10.7% | $125.20M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 4.47M | +10.7% | $125.20M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 4.47M | +10.7% | $125.20M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 4.47M | +10.7% | $125.20M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 16 | Wellington Management ✦ | 3.50M | +3.3% | $97.81M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 17 | Wellington Management ✦ | 3.50M | +3.3% | $97.81M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 18 | Wellington Management ✦ | 3.50M | +3.3% | $97.81M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 19 | Wellington Management ✦ | 3.50M | +3.3% | $97.81M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 20 | Wellington Management ✦ | 3.50M | +3.3% | $97.81M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 21 | Wellington Management ✦ | 3.50M | +3.3% | $97.81M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 22 | Alliancebernstein L.P. | 2.77M | -15.1% | $78.98M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 23 | Vanguard Capital Management Llc | 2.19M | +1.6% | $61.29M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 24 | Nomura Asset Management… | 1.73M | -3.9% | $48.52M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 25 | Goldman Sachs Group ✦ | 1.60M | -4.2% | $44.71M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 26 | Goldman Sachs Group ✦ | 1.60M | -4.2% | $44.71M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 27 | Goldman Sachs Group ✦ | 1.60M | -4.2% | $44.71M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 28 | Goldman Sachs Group ✦ | 1.60M | -4.2% | $44.71M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 29 | State Street Global Advisors ✦ (passive) | 1.39M | +6.7% | $38.94M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 30 | Marshall Wace ✦ | 1.33M | -9.1% | $37.32M | 0.0% | ▼ Trim | 9 | SEC ↗ |
| 31 | Marshall Wace ✦ | 1.33M | -9.1% | $37.32M | 0.0% | ▼ Trim | 9 | SEC ↗ |
| 32 | Marshall Wace ✦ | 1.33M | -9.1% | $37.32M | 0.0% | ▼ Trim | 9 | SEC ↗ |
| 33 | Marshall Wace ✦ | 1.33M | -9.1% | $37.32M | 0.0% | ▼ Trim | 9 | SEC ↗ |
| 34 | Geode Capital Management ✦ (passive) | 1.32M | +7.6% | $36.93M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 35 | Geode Capital Management ✦ (passive) | 1.32M | +7.6% | $36.93M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 36 | Arrowstreet Capital ✦ | 1.30M | +366.8% | $36.27M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 37 | Dimensional Fund Advisors Lp | 1.04M | +4.6% | $29.22M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 38 | Dimensional Fund Advisors Lp | 1.04M | +4.6% | $29.22M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 39 | Dimensional Fund Advisors Lp | 1.04M | +4.6% | $29.22M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 40 | Dimensional Fund Advisors Lp | 1.04M | +4.6% | $29.22M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 41 | Dimensional Fund Advisors Lp | 1.04M | +4.6% | $29.22M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 42 | Neuberger Berman Group LLC | 947.98K | -9.7% | $26.58M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 43 | Neuberger Berman Group LLC | 947.98K | -9.7% | $26.58M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 44 | BNP Paribas Asset Management… | 897.42K | -15.4% | $25.11M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 45 | BNP Paribas Asset Management… | 897.42K | -15.4% | $25.11M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 46 | Bank Of America Corp /De/ | 874.37K | +13.8% | $24.46M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 47 | Bank Of America Corp /De/ | 874.37K | +13.8% | $24.46M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 48 | Bank Of America Corp /De/ | 874.37K | +13.8% | $24.46M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 49 | Bank Of America Corp /De/ | 874.37K | +13.8% | $24.46M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 50 | Point72 Asset Management ✦ | 604.38K | New | $16.91M | 0.0% | New | 1 | SEC ↗ |
| 51 | Massachusetts Financial Services Co… | 580.62K | -0.8% | $16.25M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 52 | Massachusetts Financial Services Co… | 580.62K | -0.8% | $16.25M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 53 | Qube Research & Technologies Ltd | 560.82K | +23.3% | $15.69M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 54 | AQR Capital Management ✦ | 544.12K | +191.9% | $15.22M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 55 | AQR Capital Management ✦ | 544.12K | +191.9% | $15.22M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 56 | AQR Capital Management ✦ | 544.12K | +191.9% | $15.22M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 57 | AQR Capital Management ✦ | 544.12K | +191.9% | $15.22M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 58 | AQR Capital Management ✦ | 544.12K | +191.9% | $15.22M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 59 | AQR Capital Management ✦ | 544.12K | +191.9% | $15.22M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 60 | AQR Capital Management ✦ | 544.12K | +191.9% | $15.22M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 61 | Two Sigma Investments ✦ | 525.79K | -30.0% | $14.71M | 0.0% | ▼ Trim | 9 | SEC ↗ |
| 62 | Fidelity (FMR) ✦ | 506.36K | +50.3% | $14.17M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 63 | Fidelity (FMR) ✦ | 506.36K | +50.3% | $14.17M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 64 | Fidelity (FMR) ✦ | 506.36K | +50.3% | $14.17M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 65 | Northern Trust Corp | 482.04K | +7.2% | $13.49M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 66 | Northern Trust Corp | 482.04K | +7.2% | $13.49M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 67 | Northern Trust Corp | 482.04K | +7.2% | $13.49M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 68 | Northern Trust Corp | 482.04K | +7.2% | $13.49M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 69 | Northern Trust Corp | 482.04K | +7.2% | $13.49M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 70 | Northern Trust Corp | 482.04K | +7.2% | $13.49M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 71 | Morgan Stanley ✦ | 457.80K | -36.3% | $12.81M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 72 | Morgan Stanley ✦ | 457.80K | -36.3% | $12.81M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 73 | Morgan Stanley ✦ | 457.80K | -36.3% | $12.81M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 74 | Morgan Stanley ✦ | 457.80K | -36.3% | $12.81M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 75 | Morgan Stanley ✦ | 457.80K | -36.3% | $12.81M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 76 | Morgan Stanley ✦ | 457.80K | -36.3% | $12.81M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 77 | Morgan Stanley ✦ | 457.80K | -36.3% | $12.81M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 78 | Charles Schwab Investment… | 423.11K | -1.6% | $11.84M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 79 | Norges Bank ✦ (passive) | 374.36K | New | $10.47M | 0.0% | New | 1 | SEC ↗ |
| 80 | Nuveen, LLC | 365.82K | +8.6% | $10.24M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 81 | Nuveen, LLC | 365.82K | +8.6% | $10.24M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 82 | Nuveen, LLC | 365.82K | +8.6% | $10.24M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 83 | Wcm Investment Management, Llc | 351.08K | -2.4% | $10.08M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 84 | Connor, Clark & Lunn Investment… | 335.54K | -2.9% | $9.39M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 85 | Connor, Clark & Lunn Investment… | 335.54K | -2.9% | $9.39M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 86 | Hrt Financial Lp | 299.74K | +346.9% | $8.39M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 87 | Sei Investments Co | 281.31K | +7.9% | $7.87M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 88 | Sei Investments Co | 281.31K | +7.9% | $7.87M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 89 | Raymond James Financial Inc | 266.06K | +22.7% | $7.44M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 90 | Raymond James Financial Inc | 266.06K | +22.7% | $7.44M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 91 | Raymond James Financial Inc | 266.06K | +22.7% | $7.44M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 92 | Amundi | 264.85K | +17.2% | $7.41M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 93 | Amundi | 264.85K | +17.2% | $7.41M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 94 | Amundi | 264.85K | +17.2% | $7.41M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 95 | Renaissance Technologies ✦ | 234.10K | -24.2% | $6.55M | 0.0% | ▼ Trim | 9 | SEC ↗ |
| 96 | Universal- Beteiligungs- und… | 226.34K | +5.0% | $6.33M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 97 | D. E. Shaw & Co. ✦ | 192.82K | +240.7% | $5.40M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 98 | Citadel Advisors ✦ | 177.34K | +103.0% | $4.96M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 99 | JPMorgan Chase ✦ | 160.39K | -6.3% | $4.67M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 100 | JPMorgan Chase ✦ | 160.39K | -6.3% | $4.67M | 0.0% | ▼ Trim | 4 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Point72 Asset Management | $16.91M | 0.0% |
| Norges Bank | $10.47M | 0.0% |
Exited
| First Eagle Investment… | $7.48M | was 0.0% |
| Millennium Management | $5.13M | was 0.0% |
| Lazard Asset Management Llc | $1.54M | was 0.0% |
| Balyasny Asset Management L.P. | $493,540 | was 0.0% |
| ProShare Advisors LLC | $200,081 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 221 holders, 49.84M shares, $1.41B 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.
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 ·
Get this via the API