AtriCure, Inc. - Common Shares (ATRC) Institutional Ownership

13F Institutional Holders and Ownership History from Q1 2014 to Q4 2025

Type / Class
Equity / Common Shares
Symbol
ATRC on Nasdaq
Shares outstanding
49,768,891
Price per share
$39.56
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares
48,135,947
Total reported value
$1,696,520,088
% of total 13F portfolios
0%
Share change
-761,460
Value change
-$26,346,964
Number of holders
217
Price from insider filings
$39.56
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of AtriCure, Inc. - Common Shares (ATRC) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
WELLINGTON MANAGEMENT GROUP LLP 8% $130,072,945 3,969,269 Wellington Management Group LLP 30 Jun 2025
BlackRock, Inc. 7.8% $136,165,391 3,862,837 BlackRock, Inc. 30 Sep 2025
Hood River Capital Management LLC 6% $92,360,662 2,923,731 Hood River Capital Management LLC 31 Dec 2024
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% $67,538,251 -$20,621,794 2,137,963 -23% Champlain Investment Partners, LLC 31 Mar 2025

As of 30 Sep 2025, 217 institutional investors reported holding 48,135,947 shares of AtriCure, Inc. - Common Shares (ATRC). This represents 97% of the company’s total 49,768,891 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of AtriCure, Inc. - Common Shares (ATRC) together control 76% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
VANGUARD GROUP INC 9.7% 4,840,894 -1.3% 0% $170,641,514
WELLINGTON MANAGEMENT GROUP LLP 8.6% 4,292,087 +8.1% 0.03% $151,296,066
BlackRock, Inc. 8% 3,997,109 -0.63% 0% $140,898,109
ALLIANCEBERNSTEIN L.P. 7.2% 3,558,592 -0.42% 0.04% $125,440,368
Hood River Capital Management LLC 6.1% 3,045,587 -0.51% 1.3% $107,356,942
MACQUARIE GROUP LTD 4.6% 2,289,369 -8.5% 0.09% $80,700,000
Champlain Investment Partners, LLC 4% 1,978,213 -1.9% 0.53% $69,732,008
STATE STREET CORP 2.5% 1,264,293 -0.74% 0% $44,566,328
NEUBERGER BERMAN GROUP LLC 2.4% 1,191,111 +0.12% 0.03% $41,971,938
GEODE CAPITAL MANAGEMENT, LLC 2.4% 1,191,055 +0.79% 0% $41,991,227
First Light Asset Management, LLC 1.8% 890,362 -12% 3% $31,385,261
GW&K Investment Management, LLC 1.7% 861,035 -15% 0.27% $30,352,000
DIMENSIONAL FUND ADVISORS LP 1.7% 850,556 +3.7% 0.01% $29,980,418
KENNEDY CAPITAL MANAGEMENT LLC 1.7% 836,916 +36% 0.65% $29,501,289
GOLDMAN SACHS GROUP INC 1.6% 777,308 +4.3% 0% $27,400,107
BNP PARIBAS ASSET MANAGEMENT Holding S.A. 1.5% 767,138 +1.5% 0.07% $27,042,000
BANK OF AMERICA CORP /DE/ 1.5% 724,955 +2.1% 0% $25,554,657
Voya Investment Management LLC 1.4% 707,062 -0.47% 0.02% $24,923,937
UBS AM, A DISTINCT BUSINESS UNIT OF UBS ASSET MANAGEMENT AMERICAS LLC 1.2% 593,339 -51% 0% $20,915,200
DAFNA Capital Management LLC 1.2% 592,273 0% 5.2% $20,877,623
MARSHALL WACE, LLP 1.1% 559,172 -44% 0.02% $19,710,813
Nuveen, LLC 1.1% 556,575 -41% 0.01% $19,619,269
NORTHERN TRUST CORP 0.93% 462,090 -0.68% 0% $16,288,674
TWO SIGMA INVESTMENTS, LP 0.91% 452,875 +9.9% 0.02% $15,963,844
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.86% 427,897 +5% 0% $15,083,369

Institutional Holders of AtriCure, Inc. - Common Shares (ATRC) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 89,905 $3,568,664 +$927,087 $39.56 7
2025 Q3 48,135,947 $1,696,520,088 -$26,346,964 $35.25 217
2025 Q2 48,899,026 $1,601,933,467 -$39,427,112 $32.77 197
2025 Q1 50,269,592 $1,621,968,888 +$127,818,405 $32.26 217
2024 Q4 46,438,738 $1,419,941,785 -$82,909,831 $30.56 208
2024 Q3 49,065,221 $1,375,527,723 -$14,646,252 $28.04 196
2024 Q2 50,645,215 $1,153,226,696 +$23,036,241 $22.77 195
2024 Q1 49,064,726 $1,492,297,344 +$42,366,252 $30.42 216
2023 Q4 828,407 $29,599,645 +$57,069 $35.69 3
2023 Q3 44,791,267 $1,960,423,215 +$16,666,284 $43.80 221
2023 Q2 44,315,392 $2,185,051,123 +$3,134,404 $49.36 215
2023 Q1 44,432,783 $1,841,704,875 -$9,005,310 $41.45 217
2022 Q4 44,140,356 $1,958,365,362 +$16,471,317 $44.38 204
2022 Q3 43,139,269 $1,685,072,204 -$38,547,267 $39.10 198
2022 Q2 44,335,612 $1,807,128,541 -$1,854,101 $40.86 195
2022 Q1 43,459,360 $2,853,397,812 -$3,981,447 $65.67 203
2021 Q4 43,047,872 $2,992,497,086 +$48,469,726 $69.53 206
2021 Q3 43,335,662 $3,014,624,884 -$56,737,103 $69.55 206
2021 Q2 43,015,811 $3,412,218,655 -$12,689,040 $79.33 206
2021 Q1 43,217,429 $2,829,676,135 +$81,160,030 $65.52 183
2020 Q4 44,006,668 $2,449,179,355 +$92,761,072 $55.67 190
2020 Q3 42,516,867 $1,696,433,209 +$16,989,816 $39.90 177
2020 Q2 41,853,806 $1,880,998,353 +$275,096,679 $44.95 181
2020 Q1 36,026,602 $1,210,038,214 +$38,311,765 $33.59 150
2019 Q4 34,891,374 $1,134,285,411 +$6,247,035 $32.51 135
2019 Q3 34,965,089 $871,760,197 +$13,947,318 $24.94 136
2019 Q2 34,307,158 $1,024,694,844 +$23,051,191 $29.84 137
2019 Q1 34,458,935 $923,056,939 -$1,491,082 $26.79 156
2018 Q4 34,436,867 $1,053,096,551 +$86,604,772 $30.60 145
2018 Q3 31,486,078 $1,102,867,845 +$24,118,509 $35.03 126
2018 Q2 30,819,604 $833,657,253 +$6,638,845 $27.05 106
2018 Q1 30,428,940 $624,409,807 +$6,365,390 $20.52 106
2017 Q4 29,533,609 $538,703,395 +$1,672,078 $18.24 106
2017 Q3 29,683,626 $664,013,260 +$28,309,868 $22.37 114
2017 Q2 28,173,961 $683,211,428 -$25,680,366 $24.25 106
2017 Q1 29,274,269 $560,358,844 +$61,639,239 $19.15 99
2016 Q4 28,132,992 $550,550,714 +$39,513,365 $19.57 100
2016 Q3 26,389,549 $417,429,910 +$29,131,181 $15.82 101
2016 Q2 25,645,722 $362,366,046 -$6,756,859 $14.13 100
2016 Q1 25,602,093 $430,884,990 -$26,888,634 $16.83 112
2015 Q4 26,812,438 $601,390,870 +$3,785,878 $22.44 116
2015 Q3 27,006,984 $591,696,477 -$880,940 $21.91 120
2015 Q2 26,724,884 $658,488,962 +$20,149,136 $24.64 110
2015 Q1 26,263,775 $538,090,096 +$27,762,906 $20.49 109
2014 Q4 24,598,473 $490,978,607 +$35,223,513 $19.96 102
2014 Q3 23,018,743 $338,831,923 +$6,423,835 $14.72 109
2014 Q2 22,642,371 $415,142,569 +$16,712,425 $18.38 110
2014 Q1 22,218,123 $417,693,024 +$117,711,115 $18.81 114