ATRICURE INC (ATRC) Institutional Ownership Changes & 13F Activity
ATRICURE INC (ATRC). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Point72 Asset Management, L.P., Alliancebernstein L.P., Divisadero Street Capital Management, Lp, Aqr Capital Management Llc, and Hrt Financial Lp.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Manufacturers Life Insurance Company, The | Buy | +2,461 | +10.9% | 24,985 | $699.08K | Q2 2026 | Sep 09, 2026 |
| Parkside Financial Bank & Trust | Sell | -34 | -17.5% | 160 | $4.48K | Q2 2026 | Sep 04, 2026 |
| Citadel Advisors Llc | Buy | +89,992 | +103.0% | 177,339 | $4.96M | Q2 2026 | Sep 02, 2026 |
| First Eagle U.S. Value | Buy | +35,500 | +13.5% | 297,643 | $8.33M | Q2 2026 | Aug 24, 2026 |
| California State Teachers Retirement System | Sell | -1,515 | -2.5% | 58,432 | $1.63M | Q2 2026 | Aug 24, 2026 |
| Assenagon Asset Management S.A. | Buy | +62,334 | — | 62,334 | $1.74M | Q2 2026 | Aug 21, 2026 |
| Mercer Global Advisors Inc | Buy | +13,561 | — | 13,561 | $379.44K | Q2 2026 | Aug 19, 2026 |
| Grandeur Peak Global Advisors, Llc | Buy | +205,497 | +53.8% | 587,399 | $16.44M | Q2 2026 | Aug 17, 2026 |
| Caitlin John, Llc | Buy | +39 | — | 39 | $1.09K | Q2 2026 | Aug 17, 2026 |
| Point72 Asset Management, L.P. | Buy | +604,380 | — | 604,380 | $16.91M | Q2 2026 | Aug 14, 2026 |
| Alliancebernstein L.P. | Sell | -490,507 | -15.1% | 2,768,365 | $78.98M | Q2 2026 | Aug 14, 2026 |
| Divisadero Street Capital Management, Lp | Sell | -359,024 | -31.0% | 800,931 | $22.41M | Q2 2026 | Aug 14, 2026 |
| Aqr Capital Management Llc | Buy | +357,741 | +191.9% | 544,123 | $15.22M | Q2 2026 | Aug 14, 2026 |
| Hrt Financial Lp | Buy | +232,665 | +346.9% | 299,736 | $8.39M | Q2 2026 | Aug 14, 2026 |
| Two Sigma Investments, Lp | Sell | -225,208 | -30.0% | 525,795 | $14.71M | Q2 2026 | Aug 14, 2026 |
| Hood River Capital Management Llc | Sell | -212,246 | -6.8% | 2,905,299 | $81.29M | Q2 2026 | Aug 14, 2026 |
| Meros Investment Management, Lp | Buy | +170,000 | — | 170,000 | $4.76M | Q2 2026 | Aug 14, 2026 |
| First Light Asset Management, Llc | Sell | -161,683 | -22.2% | 567,838 | $15.89M | Q2 2026 | Aug 14, 2026 |
| Osterweis Capital Management Inc | Buy | +151,710 | +43.4% | 501,355 | $14.03M | Q2 2026 | Aug 14, 2026 |
| Topline Capital Management, Llc | Buy | +138,490 | — | 138,490 | $3.87M | Q2 2026 | Aug 14, 2026 |
| D. E. Shaw & Co., Inc. | Buy | +136,235 | +240.7% | 192,824 | $5.40M | Q2 2026 | Aug 14, 2026 |
| Trexquant Investment Lp | Sell | -116,310 | -81.3% | 26,784 | $749.42K | Q2 2026 | Aug 14, 2026 |
| Wellington Management Group Llp | Buy | +113,048 | +3.3% | 3,495,603 | $97.81M | Q2 2026 | Aug 14, 2026 |
| Qube Research & Technologies Ltd | Buy | +106,033 | +23.3% | 560,824 | $15.69M | Q2 2026 | Aug 14, 2026 |
| Bank Of America Corp | Buy | +105,809 | +13.8% | 874,370 | $24.46M | Q2 2026 | Aug 14, 2026 |
| Ameriprise Financial Inc | Buy | +94,897 | — | 94,897 | $2.66M | Q2 2026 | Aug 14, 2026 |
| Exoduspoint Capital Management, Lp | Buy | +86,356 | — | 86,356 | $2.42M | Q2 2026 | Aug 14, 2026 |
| Invesco Ltd. | Buy | +84,847 | — | 84,847 | $2.37M | Q2 2026 | Aug 14, 2026 |
| Susquehanna Portfolio Strategies, Llc | Buy | +80,089 | — | 80,089 | $2.24M | Q2 2026 | Aug 14, 2026 |
| Nomura Asset Management International Inc. | Sell | -70,648 | -3.9% | 1,734,279 | $48.52M | Q2 2026 | Aug 14, 2026 |
Frequently asked questions about ATRC activity
Which institutional owners are buying ATRC?
Institutional owners buying ATRC include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in ATRC activity?
"Buy" means an investor increased their reported position in ATRC compared to the prior reporting period. This reflects growing exposure to ATRICURE INC (ATRC) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in ATRC increasing?
Institutional interest in ATRC can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.
Related ATRC Institutional Insights
- ATRC Overview
- ATRC 13F Institutional Holders
- ATRC Top Institutional Shareholders
- Healthcare Sector Institutional Ownership
- Healthcare Sector Portfolio Overlap
- Institutional Portfolio Overlap & Shared Holdings
- Most Bought Healthcare Stocks By Institutional Investors
- Most Sold Healthcare Stocks By Institutional Investors
- ATRC Insider Trading & SEC Form 4 Activity
- ATRC Articles
- Top Institutional Investor Stock Rankings