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AtriCure

201 hedge funds and large institutions have $1.6B invested in AtriCure in 2025 Q2 according to their latest regulatory filings, with 17 funds opening new positions, 78 increasing their positions, 72 reducing their positions, and 35 closing their positions.

New
Increased
Maintained
Reduced
Closed

8% more repeat investments, than reductions

Existing positions increased: 78 | Existing positions reduced: 72

0% more funds holding in top 10

Funds holding in top 10: 22 (0)

1% less capital invested

Capital invested by funds: $1.62B → $1.6B (-$21.9M)

4.19% less ownership

Funds ownership: 103%98.81% (-4.2%)

9% less funds holding

Funds holding: 221201 (-20)

51% less first-time investments, than exits

New positions opened: 17 | Existing positions closed: 35

Holders
201
Holders Change
-20
Holders Change %
-9.05%
% of All Funds
2.65%
Holding in Top 10
2
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
0.03%
New
17
Increased
78
Reduced
72
Closed
35
Calls
$1.1M
Puts
Net Calls
+$1.1M
Net Calls Change
+$194K
Name Holding Trade Value Shares
Change
Change in
Stake
Two Sigma Investments
26
Two Sigma Investments
New York
$13.5M -$8.32M -256,012 -38%
Charles Schwab
27
Charles Schwab
California
$13.4M +$473K +14,561 +4%
Renaissance Technologies
28
Renaissance Technologies
New York
$12.4M +$2.27M +69,800 +23%
Millennium Management
29
Millennium Management
New York
$11.8M -$8.56M -263,258 -42%
WCM Investment Management
30
WCM Investment Management
California
$10.6M +$4.36M +134,146 +69%
OCM
31
Osterweis Capital Management
California
$10.3M +$648K +19,925 +7%
Adage Capital Partners
32
Adage Capital Partners
Massachusetts
$9.01M
Fidelity Investments
33
Fidelity Investments
Massachusetts
$8.86M -$23.5M -722,673 -73%
Voloridge Investment Management
34
Voloridge Investment Management
Florida
$8.84M -$3.88M -119,248 -31%
Connor, Clark & Lunn Investment Management (CC&L)
35
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
$8.66M +$1.33M +40,775 +18%
Raymond James Financial
36
Raymond James Financial
Florida
$8.28M +$165K +5,087 +2%
Morgan Stanley
37
Morgan Stanley
New York
$8.26M -$4.38M -134,854 -35%
Amundi
38
Amundi
France
$7.59M -$430K -13,241 -5%
State of Wisconsin Investment Board
39
State of Wisconsin Investment Board
Wisconsin
$7.33M -$43.2K -1,329 -0.6%
PAM
40
Panagora Asset Management
Massachusetts
$7.05M +$14.5K +446 +0.2%
JP Morgan Chase
41
JP Morgan Chase
New York
$6.83M -$1.5M -46,195 -18%
Acadian Asset Management
42
Acadian Asset Management
Massachusetts
$6.69M +$287K +8,841 +5%
Universal-Beteiligungs- und Servicegesellschaft
43
Universal-Beteiligungs- und Servicegesellschaft
Germany
$6.59M +$3.59M +110,521 +122%
NC
44
Nicholas Company
Wisconsin
$6.31M +$492K +15,135 +9%
Squarepoint
45
Squarepoint
New York
$6.13M +$2.39M +73,468 +65%
SEI Investments
46
SEI Investments
Pennsylvania
$5.95M +$779K +23,983 +15%
ACM
47
Advisors Capital Management
New Jersey
$5.54M +$352K +10,846 +7%
Bank of New York Mellon
48
Bank of New York Mellon
New York
$4.98M -$3.29M -101,178 -40%
Citadel Advisors
49
Citadel Advisors
Florida
$4.42M -$1.78M -54,748 -29%
First Trust Advisors
50
First Trust Advisors
Illinois
$4.35M +$4.32M +132,842 New

ATRC Hedge Fund Activity: Q2 2025 in Review

201 of the 7,595 institutional investors tracked by Wall St. Rank reported a position in AtriCure (ATRC) for Q2 2025, worth a combined $1.6B — down 1.3% from $1.62B a quarter earlier.

Sellers outnumbered buyers: 35 funds closed out of ATRC and 17 opened new positions — a net loss of 18 holders — while 72 trimmed existing stakes and 78 added.

The largest buyer was Wellington Management Group, adding an estimated $106M. The largest seller was UBS AM, cutting an estimated $32.3M.

  • 201 institutional investors held AtriCure (ATRC) as of Q2 2025, down from 221 in Q1 2025.
  • Funds reported $1.6B of AtriCure stock for Q2 2025, down 1.3% quarter-over-quarter.
  • 17 funds opened new AtriCure positions in Q2 2025 and 35 closed out, a net change of -18 holders.
  • The largest AtriCure buyer in Q2 2025 was Wellington Management Group, an estimated $106M added.
  • The largest AtriCure seller in Q2 2025 was UBS AM, an estimated $32.3M sold.

Based on aggregated 13F filings for Q2 2025.