MASON, OH
ATRICURE, INC.ATRC— Latest position per institution from SEC 13F filings
15
Institutional holders
45.34M
Total shares held
1.25B
Estimated value
2.27M
Avg. position size
VANGUARD GROUP INC
CIK 102909
Shares
4.90M
Value
193.99M
Filed
Dec 31, 2025
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
4.62M
Value
105.10M
Filed
Jun 30, 2024
BLACKROCK, INC.
CIK 2012383
Shares
4.47M
Value
125.20M
Filed
Jun 30, 2026
WELLINGTON MANAGEMENT GROUP LLP
CIK 902219
Shares
3.50M
Value
97.81M
Filed
Jun 30, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
3.13M
Value
87.50M
Filed
Jun 30, 2026
HOOD RIVER CAPITAL MANAGEMENT LLC
CIK 1578177
Shares
2.91M
Value
81.29M
Filed
Jun 30, 2026
ALLIANCEBERNSTEIN L.P.
CIK 1109448
Shares
2.77M
Value
78.98M
Filed
Jun 30, 2026
MACQUARIE GROUP LTD
CIK 1418333
Shares
2.29M
Value
80.70M
Filed
Sep 30, 2025
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
2.19M
Value
61.29M
Filed
Jun 30, 2026
NOMURA ASSET MANAGEMENT INTERNATIONAL INC.
CIK 921739
Shares
1.73M
Value
48.52M
Filed
Jun 30, 2026
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM
CIK 1081019
Shares
1.63M
Value
58.43K
Filed
Jun 30, 2026
GOLDMAN SACHS GROUP INC
CIK 886982
Shares
1.60M
Value
44.71M
Filed
Jun 30, 2026
STATE STREET CORP
CIK 93751
Shares
1.39M
Value
38.94M
Filed
Jun 30, 2026
MARSHALL WACE, LLP
CIK 1318757
Shares
1.33M
Value
37.32M
Filed
Jun 30, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
1.32M
Value
36.93M
Filed
Jun 30, 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 1164508
Shares
1.30M
Value
36.27M
Filed
Jun 30, 2026
T. ROWE PRICE INVESTMENT MANAGEMENT, INC.
CIK 1897612
Shares
1.20M
Value
53.20K
Filed
Dec 31, 2022
DIMENSIONAL FUND ADVISORS LP
CIK 354204
Shares
1.04M
Value
29.22M
Filed
Jun 30, 2026
NUVEEN ASSET MANAGEMENT, LLC
CIK 1521019
Shares
1.04M
Value
31.70M
Filed
Dec 31, 2024
CREDIT SUISSE AG/
CIK 824468
Shares
984.96K
Value
29.96M
Filed
Mar 31, 2024
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | 102909 | 4.90M | 193.99M | Dec 31, 2025 |
| 2 | BLACKROCK FINANCE, INC. | 1364742 | 4.62M | 105.10M | Jun 30, 2024 |
| 3 | BLACKROCK, INC. | 2012383 | 4.47M | 125.20M | Jun 30, 2026 |
| 4 | WELLINGTON MANAGEMENT GROUP LLP | 902219 | 3.50M | 97.81M | Jun 30, 2026 |
| 5 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 3.13M | 87.50M | Jun 30, 2026 |
| 6 | HOOD RIVER CAPITAL MANAGEMENT LLC | 1578177 | 2.91M | 81.29M | Jun 30, 2026 |
| 7 | ALLIANCEBERNSTEIN L.P. | 1109448 | 2.77M | 78.98M | Jun 30, 2026 |
| 8 | MACQUARIE GROUP LTD | 1418333 | 2.29M | 80.70M | Sep 30, 2025 |
| 9 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 2.19M | 61.29M | Jun 30, 2026 |
| 10 | NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 921739 | 1.73M | 48.52M | Jun 30, 2026 |
| 11 | CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | 1081019 | 1.63M | 58.43K | Jun 30, 2026 |
| 12 | GOLDMAN SACHS GROUP INC | 886982 | 1.60M | 44.71M | Jun 30, 2026 |
| 13 | STATE STREET CORP | 93751 | 1.39M | 38.94M | Jun 30, 2026 |
| 14 | MARSHALL WACE, LLP | 1318757 | 1.33M | 37.32M | Jun 30, 2026 |
| 15 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 1.32M | 36.93M | Jun 30, 2026 |
| 16 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 1164508 | 1.30M | 36.27M | Jun 30, 2026 |
| 17 | T. ROWE PRICE INVESTMENT MANAGEMENT, INC. | 1897612 | 1.20M | 53.20K | Dec 31, 2022 |
| 18 | DIMENSIONAL FUND ADVISORS LP | 354204 | 1.04M | 29.22M | Jun 30, 2026 |
| 19 | NUVEEN ASSET MANAGEMENT, LLC | 1521019 | 1.04M | 31.70M | Dec 31, 2024 |
| 20 | CREDIT SUISSE AG/ | 824468 | 984.96K | 29.96M | Mar 31, 2024 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.