AtriCure
ATRC
224 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.
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
2.43% more ownership
Funds ownership: 97.99% → 100.42% (+2.4%)
4% less funds holding
Funds holding: 233 → 224 (-9)
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: 3 → 2 (-1)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
DSCM
Divisadero Street Capital Management
Miami,
Florida
|
+$39.6M |
| 2 |
Goldman Sachs
New York
|
+$26.7M |
| 3 |
Marshall Wace
London,
United Kingdom
|
+$18.9M |
| 4 |
Morgan Stanley
New York
|
+$12.7M |
| 5 |
Two Sigma Investments
New York
|
+$12.6M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Wellington Management Group
Boston,
Massachusetts
|
-$18.3M |
| 2 |
DCM
Defilade Capital Management
Emeryville,
California
|
-$15.7M |
| 3 |
FLAM
First Light Asset Management
Edina,
Minnesota
|
-$15.2M |
| 4 |
Point72 Asset Management
Stamford,
Connecticut
|
-$11M |
| 5 |
AllianceBernstein
Nashville,
Tennessee
|
-$10.4M |
ATRC Hedge Fund Activity: Q1 2026 in Review
224 of the 8,187 institutional investors tracked by Wall St. Rank reported a position in AtriCure (ATRC) for Q1 2026, worth a combined $1.46B — down 24% from $1.93B a quarter earlier.
Sellers outnumbered buyers: 41 funds closed out of ATRC and 36 opened new positions — a net loss of 5 holders — while 66 trimmed existing stakes and 82 added.
The largest buyer was Divisadero Street Capital Management, opening a new position worth an estimated $39.6M. The largest seller was Wellington Management Group, cutting an estimated $18.3M.
- 224 institutional investors held AtriCure (ATRC) as of Q1 2026, down from 233 in Q4 2025.
- Funds reported $1.46B of AtriCure stock for Q1 2026, down 24% quarter-over-quarter.
- 36 funds opened new AtriCure positions in Q1 2026 and 41 closed out, a net change of -5 holders.
- The largest AtriCure buyer in Q1 2026 was Divisadero Street Capital Management, an estimated $39.6M added.
- The largest AtriCure seller in Q1 2026 was Wellington Management Group, an estimated $18.3M sold.
Based on aggregated 13F filings for Q1 2026.