Latest Period
Q2 2026
Security Snapshot
AtriCure, Inc. - Common Stock (ATRC) Institutional Ownership
CUSIP: 04963C209
13F Institutional Holders and Ownership History from Q1 2014 to Q2 2026
Institutions Reporting
251
Shares (Excl. Options)
52,474,876
Price
$27.98
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- Security type / class
- Equity / Common Stock
- Symbol
- ATRC on Nasdaq
- All holders as of 30 Jun 2026
- Q2 2026
- Total 13F shares
- 52,474,876
- Total 13F value
- $1,470,742,828
- Portfolio coverage rank
- 0%
- Share change
- +2,472,025
- Value change
- +$68,844,248
- Number of holders
- 251
- Shares outstanding
- 50,333,909
- SEC-reported price per share
- $34.51
- Insider filing price
- $34.51
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- ATRC - AtriCure, Inc. - Common Stock is tracked under CUSIP 04963C209.
- 251 institutions reported positions in Q2 2026.
- 8 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 221 to 251 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $1,462,602,403 to $1,470,742,828.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 251 institutions filings for Q2 2026.
Security key
04963C209
Latest holder period
Q2 2026
13F holders
251
13D/G owners
8
CIK / CUSIP context first
Open Q2 2026 holders
ATRC full holder history
AtriCure, Inc. SEC filings
AtriCure, Inc. company facts
AtriCure, Inc. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 04963C209:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
8
Security
ATRC
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 7.8% | $136,165,391 | 3,862,837 | BlackRock, Inc. | 30 Sep 2025 | |||
| WELLINGTON MANAGEMENT GROUP LLP | 6.8% | -15% | $96,504,294 | -$16,738,950 | 3,382,555 | -15% | Wellington Management Group LLP | 31 Mar 2026 |
| Hood River Capital Management LLC | 6.2% | +3.8% | $122,501,931 | +$6,839,133 | 3,096,611 | +5.9% | Hood River Capital Management LLC | 31 Dec 2025 |
| ALLIANCEBERNSTEIN L.P. | 5.5% | $89,667,342 | 2,768,365 | AllianceBernstein L.P. | 30 Jun 2026 | |||
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5.5% | $78,305,863 | 2,744,685 | Vanguard Portfolio Management | 31 Mar 2026 | |||
| VANGUARD CAPITAL MANAGEMENT LLC | 5.1% | $72,265,491 | 2,532,965 | Vanguard Capital Management | 31 Mar 2026 | |||
| MACQUARIE GROUP LTD | 4.6% | -9.2% | $80,700,257 | -$7,537,719 | 2,289,369 | -8.5% | Macquarie Group Limited | 30 Sep 2025 |
| Champlain Investment Partners, LLC | 4.4% | -22% | $71,407,964 | -$21,803,353 | 2,137,963 | -23% | Champlain Investment Partners, LLC | 31 Mar 2025 |
As of 30 Jun 2026, 251 institutional investors reported holding 52,474,876 shares of AtriCure, Inc. - Common Stock (ATRC). This represents 104% of the company’s total 50,333,909 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
75%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 8.9% | 4,474,548 | +11% | 0% | $125,197,854 |
| WELLINGTON MANAGEMENT GROUP LLP | 6.9% | 3,495,603 | +3.3% | 0.02% | $97,806,972 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 6.2% | 3,127,195 | +16% | 0% | $87,498,916 |
| Hood River Capital Management LLC | 5.8% | 2,905,299 | -6.8% | 0.59% | $81,290,266 |
| ALLIANCEBERNSTEIN L.P. | 5.5% | 2,768,365 | -15% | 0.03% | $78,981,453 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.4% | 2,190,413 | +1.6% | 0% | $61,287,756 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 3.4% | 1,734,279 | -3.9% | 0.07% | $48,525,000 |
| GOLDMAN SACHS GROUP INC | 3.2% | 1,597,988 | -4.1% | 0% | $44,711,719 |
| STATE STREET CORP | 2.8% | 1,389,989 | +6.7% | 0% | $38,935,240 |
| MARSHALL WACE, LLP | 2.7% | 1,333,904 | -9.1% | 0.03% | $37,322,635 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.6% | 1,319,687 | +7.6% | 0% | $36,932,309 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 2.6% | 1,296,209 | +367% | 0.02% | $36,267,928 |
| DIMENSIONAL FUND ADVISORS LP | 2.1% | 1,044,034 | +4.6% | 0.01% | $29,215,881 |
| GW&K Investment Management, LLC | 1.9% | 949,516 | -1.4% | 0.21% | $26,567,000 |
| NEUBERGER BERMAN GROUP LLC | 1.9% | 947,982 | -9.7% | 0.02% | $26,579,656 |
| Champlain Investment Partners, LLC | 1.9% | 938,567 | -3.4% | 0.67% | $26,261,105 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 1.8% | 897,419 | -15% | 0.03% | $25,109,784 |
| BANK OF AMERICA CORP /DE/ | 1.7% | 874,370 | +14% | 0% | $24,464,872 |
| KENNEDY CAPITAL MANAGEMENT LLC | 1.7% | 857,787 | +2.8% | 0.42% | $24,000,880 |
| Divisadero Street Capital Management, LP | 1.6% | 800,931 | -31% | 0.52% | $22,410,049 |
| Point72 Asset Management, L.P. | 1.2% | 604,380 | 0.03% | $16,910,552 | |
| DAFNA Capital Management LLC | 1.2% | 597,431 | 0% | 3.2% | $16,716,119 |
| Grandeur Peak Global Advisors, LLC | 1.2% | 587,399 | +54% | 3.8% | $16,435,424 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 1.2% | 580,621 | -0.81% | 0.01% | $16,245,776 |
| First Light Asset Management, LLC | 1.1% | 567,838 | -22% | 0.97% | $15,888,107 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
50
Latest
Q2 2026
Rows shown
1-25 of 50
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 52,474,876 | $1,470,742,828 | +$68,844,248 | $27.98 | 251 |
| 2026 Q1 | 50,013,372 | $1,462,602,403 | -$2,007,691 | $28.53 | 221 |
| 2025 Q4 | 48,743,756 | $1,928,695,662 | -$52,107,022 | $39.56 | 234 |
| 2025 Q3 | 48,137,442 | $1,696,572,476 | -$26,346,560 | $35.25 | 219 |
| 2025 Q2 | 48,899,026 | $1,601,933,467 | -$39,427,096 | $32.77 | 197 |
| 2025 Q1 | 50,269,592 | $1,621,969,076 | +$127,818,413 | $32.26 | 217 |
| 2024 Q4 | 46,483,344 | $1,421,304,781 | -$87,630,696 | $30.56 | 209 |
| 2024 Q3 | 49,264,286 | $1,381,109,066 | -$12,223,311 | $28.04 | 198 |
| 2024 Q2 | 50,723,505 | $1,155,009,424 | +$19,813,566 | $22.77 | 194 |
| 2024 Q1 | 49,351,679 | $1,501,026,424 | +$67,021,576 | $30.42 | 218 |
| 2023 Q4 | 47,164,039 | $1,683,028,664 | +$48,077,369 | $35.69 | 230 |
| 2023 Q3 | 45,425,624 | $1,988,207,852 | +$14,251,801 | $43.80 | 224 |
| 2023 Q2 | 45,005,948 | $2,219,137,443 | +$14,004,669 | $49.36 | 219 |
| 2023 Q1 | 44,806,862 | $1,857,210,760 | -$5,467,106 | $41.45 | 219 |
| 2022 Q4 | 44,912,321 | $1,992,625,452 | +$11,085,452 | $44.38 | 207 |
| 2022 Q3 | 44,732,086 | $1,747,349,909 | -$40,042,063 | $39.10 | 201 |
| 2022 Q2 | 44,464,969 | $1,816,797,154 | +$5,915,882 | $40.86 | 196 |
| 2022 Q1 | 44,016,086 | $2,889,958,812 | -$4,881,515 | $65.67 | 206 |
| 2021 Q4 | 44,091,364 | $3,064,833,086 | +$50,071,000 | $69.53 | 211 |
| 2021 Q3 | 43,335,200 | $3,014,938,884 | -$67,863,474 | $69.55 | 206 |
| 2021 Q2 | 44,284,173 | $3,513,197,655 | -$20,715,510 | $79.33 | 206 |
| 2021 Q1 | 44,587,200 | $2,919,424,135 | +$101,599,138 | $65.52 | 184 |
| 2020 Q4 | 44,006,691 | $2,449,180,355 | +$92,888,778 | $55.67 | 191 |
| 2020 Q3 | 42,560,668 | $1,698,181,209 | +$16,788,166 | $39.90 | 178 |
| 2020 Q2 | 41,949,121 | $1,885,283,353 | +$271,715,763 | $44.95 | 184 |