Simplex Trading’s AtriCure ATRC Stock Holding History

Simplex Trading’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
2026 Q1	$143K	Buy	+5,000	New	+$171K	﹤0.01%	4684
2024 Q2	–	Sell	-8,000	Closed	-$243K	–	8737
2024 Q1	$243K	Buy	8,000 +7,900	+7,900%	+$265K	﹤0.01%	4632
2023 Q4	$3K	Buy	+100	New	+$3.72K	﹤0.01%	8050
2022 Q4	–	Sell	-2,100	Closed	-$82K	–	9169
2022 Q3	$82K	Buy	+2,100	New	+$96.1K	﹤0.01%	5781
2021 Q4	–	Sell	-200	Closed	-$16K	–	10436
2021 Q3	$16K	Hold	200	–	–	﹤0.01%	8601
2021 Q2	$15K	Buy	200 +198	+9,900%	+$14.4K	﹤0.01%	8811
2021 Q1	$13K	Buy	+2	New	+$123	﹤0.01%	7737
2020 Q3	–	Sell	-5	Closed	-$22K	–	7759
2020 Q2	$22K	Buy	5 +2	+67%	+$87	﹤0.01%	6133
2020 Q1	$10K	Sell	3 -4	-57%	-$144	﹤0.01%	6452
2019 Q4	$22K	Sell	7 -146	-95%	-$4.16K	﹤0.01%	5864
2019 Q3	$381K	Buy	153 +150	+5,000%	+$4.28K	﹤0.01%	2899
2019 Q2	$8K	Sell	3 -2	-40%	-$58	﹤0.01%	6210
2019 Q1	$13K	Buy	+5	New	+$152	﹤0.01%	5977

Other funds holding ATRC

AllianceBernstein Nashville, Tennessee $309B AUM 23.92% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

HRCM

Hood River Capital Management Palm Beach Gardens, Florida $9.98B AUM 145.42% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

NAMI

Nomura Asset Management International Philadelphia, Pennsylvania $58.4B AUM

Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return

Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Simplex Trading's ATRC Position: Q1 2026 in Review

Simplex Trading opened a new position in AtriCure (ATRC) in Q1 2026: 2,512 shares worth $71.7K. The stake represents ﹤0.01% of the portfolio and ranks #5469 among its holdings. This is a return to the name: Simplex Trading previously reported a position in ATRC as recently as Q3 2024.

Simplex Trading first reported a position in ATRC in Q2 2017 and has held it in 18 quarters since. The position peaked at $121K in Q1 2024. 223 funds tracked by Wall St. Rank hold ATRC as of Q1 2026.

Simplex Trading held 2,512 shares of AtriCure worth $71.7K as of Q1 2026.
AtriCure was a new Simplex Trading position in Q1 2026.
AtriCure made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #5469 holding.
Simplex Trading first reported a position in AtriCure in Q2 2017 and has held it in 18 quarters since.
Simplex Trading's AtriCure position peaked at $121K in Q1 2024.
223 funds tracked by Wall St. Rank held AtriCure as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.