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AtriCure

223 hedge funds and large institutions have $1.46B invested in AtriCure in 2026 Q1 according to their latest regulatory filings, with 36 funds opening new positions, 82 increasing their positions, 66 reducing their positions, and 41 closing their positions.

New
Increased
Maintained
Reduced
Closed

96% more call options, than puts

Call options by funds: $280K | Put options by funds: $143K

24% more repeat investments, than reductions

Existing positions increased: 82 | Existing positions reduced: 66

2.4% more ownership

Funds ownership: 98%100.41% (+2.4%)

5% less funds holding

Funds holding: 234223 (-11)

12% less first-time investments, than exits

New positions opened: 36 | Existing positions closed: 41

24% less capital invested

Capital invested by funds: $1.93B → $1.46B (-$465M)

33% less funds holding in top 10

Funds holding in top 10: 32 (-1)

Holders
223
Holders Change
-11
Holders Change %
-4.7%
% of All Funds
2.75%
Holding in Top 10
2
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-33.33%
% of All Funds
0.02%
New
36
Increased
82
Reduced
66
Closed
41
Calls
$280K
Puts
$143K
Net Calls
+$137K
Net Calls Change
-$402K
Name Holding Trade Value Shares
Change
Change in
Stake
JP Morgan Chase
51
JP Morgan Chase
New York
$4.84M -$285K -8,337 -5%
State of Wisconsin Investment Board
52
State of Wisconsin Investment Board
Wisconsin
$4.77M +$108K +3,155 +2%
Adage Capital Partners
53
Adage Capital Partners
Massachusetts
$4.28M +$1.36M +39,790 +36%
TI
54
Trexquant Investment
Connecticut
$4.08M +$2.23M +65,427 +84%
Bank of New York Mellon
55
Bank of New York Mellon
New York
$3.73M -$168K -4,922 -4%
PCMI
56
Paradigm Capital Management Inc
New York
$3.51M
Allianz Asset Management
57
Allianz Asset Management
Germany
$3.49M +$148K +4,342 +4%
SIA
58
Sit Investment Associates
Minnesota
$3.23M +$185K +5,425 +5%
SSA
59
Schonfeld Strategic Advisors
New York
$2.9M +$3.47M +101,682 New
Swiss National Bank
60
Swiss National Bank
Switzerland
$2.8M
Voloridge Investment Management
61
Voloridge Investment Management
Florida
$2.77M -$4.2M -123,108 -56%
Acadian Asset Management
62
Acadian Asset Management
Massachusetts
$2.53M +$204K +5,969 +7%
Citadel Advisors
63
Citadel Advisors
Florida
$2.49M -$5.3M -155,394 -64%
Man Group
64
Man Group
United Kingdom
$2.43M +$2.31M +67,715 +389%
HWM
65
HighMark Wealth Management
Minnesota
$2.39M
Invesco
66
Invesco
Georgia
$2.21M +$98.3K +2,881 +4%
EIA
67
Emerald Investment Advisers
Pennsylvania
$2.04M +$2.44M +71,492 New
RP
68
Riverwater Partners
Wisconsin
$2.01M +$348K +10,184 +17%
Wells Fargo
69
Wells Fargo
California
$1.97M -$1.11M -32,402 -32%
HF
70
HRT Financial
New York
$1.91M +$2.29M +67,071 New
RhumbLine Advisers
71
RhumbLine Advisers
Massachusetts
$1.89M -$36.3K -1,064 -2%
UBS Group
72
UBS Group
Switzerland
$1.88M -$1.3M -38,195 -37%
Principal Financial Group
73
Principal Financial Group
Iowa
$1.83M +$688K +20,156 +46%
T. Rowe Price Associates
74
T. Rowe Price Associates
Maryland
$1.72M +$331K +9,708 +19%
California State Teachers Retirement System (CalSTRS)
75
California State Teachers Retirement System (CalSTRS)
California
$1.71M +$511K +14,987 +33%