Calamos Advisors
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Calamos Advisors’s AtriCure ATRC Stock Holding History

Calamos Advisors’s Portfolio ATRC Stock Details ATRC Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q3 		– Sell
-12,126
Closed -$397K – 929
2025
Q2 		$397K Sell
12,126
-94,506
-89% -$3.07M ﹤0.01% 770
2025
Q1 		$3.44M Sell
106,632
-4,039
-4% -$150K 0.02% 552
2024
Q4 		$3.38M Buy
110,671
+24,147
+28% +$777K 0.01% 554
2024
Q3 		$2.43M Buy
+86,524
New +$2.13M 0.01% 595

Other funds holding ATRC

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
AllianceBernstein
AllianceBernstein Nashville, Tennessee $309B AUM 23.92% 1-Year Est. Return
HRCM
Hood River Capital Management Palm Beach Gardens, Florida $9.98B AUM 145.42% 1-Year Est. Return
Macquarie Group
Macquarie Group Sydney, NSW 2000, Australia $16.8B AUM 27.39% 1-Year Est. Return
CIP
Champlain Investment Partners Burlington, Vermont $7.88B AUM 6.82% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Neuberger Berman Group
Neuberger Berman Group New York $131B AUM 28.36% 1-Year Est. Return

Calamos Advisors's ATRC Position: Q3 2025 in Review

Calamos Advisors sold out of AtriCure (ATRC) in Q3 2025, closing a stake of 12,126 shares — an estimated $397K sold.

Calamos Advisors first reported a position in ATRC in Q3 2024 and held it in 4 quarters. The position peaked at $3.44M in Q1 2025. 223 funds tracked by Wall St. Rank hold ATRC as of Q3 2025.

  • Calamos Advisors reported no remaining AtriCure position as of Q3 2025 after selling out during the quarter.
  • Calamos Advisors sold 12,126 AtriCure shares in Q3 2025, an estimated $397K.
  • Calamos Advisors first reported a position in AtriCure in Q3 2024 and held it in 4 quarters.
  • Calamos Advisors's AtriCure position peaked at $3.44M in Q1 2025.
  • 223 funds tracked by Wall St. Rank held AtriCure as of Q3 2025.

Based on Calamos Advisors's 13F filing for Q3 2025, filed 20 Oct 2025.