AtriCure
ATRC
233 hedge funds and large institutions have $1.93B invested in AtriCure in 2025 Q4 according to their latest regulatory filings, with 36 funds opening new positions, 90 increasing their positions, 74 reducing their positions, and 22 closing their positions.
200% more funds holding in top 10
Funds holding in top 10: 1 → 3 (+2)
72% more call options, than puts
Call options by funds: $1.29M | Put options by funds: $747K
64% more first-time investments, than exits
New positions opened: 36 | Existing positions closed: 22
22% more repeat investments, than reductions
Existing positions increased: 90 | Existing positions reduced: 74
14% more capital invested
Capital invested by funds: $1.7B → $1.93B (+$231M)
4% more funds holding
Funds holding: 223 → 233 (+10)
1.11% more ownership
Funds ownership: 96.88% → 97.99% (+1.1%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Marshall Wace
London,
United Kingdom
|
+$13M |
| 2 |
FLAM
First Light Asset Management
Edina,
Minnesota
|
+$10.5M |
| 3 |
Point72 Asset Management
Stamford,
Connecticut
|
+$10.2M |
| 4 |
GPGA
Grandeur Peak Global Advisors
Salt Lake City,
Utah
|
+$9.15M |
| 5 |
Citadel Advisors
Miami,
Florida
|
+$7.23M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Macquarie Group
Sydney, NSW 2000,
Australia
|
-$80.7M |
| 2 |
CIP
Champlain Investment Partners
Burlington,
Vermont
|
-$29.5M |
| 3 |
Wellington Management Group
Boston,
Massachusetts
|
-$13.7M |
| 4 |
Nuveen
Charlotte,
North Carolina
|
-$8.08M |
| 5 |
Millennium Management
New York
|
-$6.95M |
ATRC Hedge Fund Activity: Q4 2025 in Review
233 of the 8,267 institutional investors tracked by Wall St. Rank reported a position in AtriCure (ATRC) for Q4 2025, worth a combined $1.93B — up 14% from $1.7B a quarter earlier.
Buyers outnumbered sellers: 36 funds opened new ATRC positions and 22 closed out — a net gain of 14 holders — while 90 added to existing stakes and 74 trimmed.
The largest buyer was Marshall Wace, adding an estimated $13M. The largest seller was Macquarie Group, exiting entirely with an estimated $80.7M sold.
- 233 institutional investors held AtriCure (ATRC) as of Q4 2025, up from 223 in Q3 2025.
- Funds reported $1.93B of AtriCure stock for Q4 2025, up 14% quarter-over-quarter.
- 36 funds opened new AtriCure positions in Q4 2025 and 22 closed out, a net change of +14 holders.
- The largest AtriCure buyer in Q4 2025 was Marshall Wace, an estimated $13M added.
- The largest AtriCure seller in Q4 2025 was Macquarie Group, an estimated $80.7M sold.
Based on aggregated 13F filings for Q4 2025.