ATRC Insider Trading Activity

Transactions disclosed by company insiders to the SEC on Form 4, most recent first.

InsiderRoleDateSharesValue
Prange Karen Director 2026-08-05 3,564 $138,283
Yuen Maggie Director 2026-08-05 3,500 $134,470
CARREL MICHAEL H President, CEO, & Director 2026-07-30 700 $0
CARREL MICHAEL H President, CEO, & Director 2026-07-30 4,000 $0
Noznesky Justin J Chief Mktg & Strategy Officer 2026-07-29 6,182 $239,862
WEHRWEIN SVEN Director 2026-07-28 25,000 $498,750
WEHRWEIN SVEN Director 2026-07-28 25,000 $946,000
Doraiswamy Vinayak Chief Scientific Officer 2026-07-28 6,000 $233,280

How Institutional Funds Moved on ATRC

Position changes disclosed in SEC Form 13F filings. These report a quarterly snapshot, not exact trade dates.

FundChangeQuarter
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP ARROWSTREET CAPITAL, LIMITED PARTNERSHIP increased this position by 358% ($7,922,267 -> $36,267,928). 2026-06-30
BNP PARIBAS ASSET MANAGEMENT Holding S.A. BNP PARIBAS ASSET MANAGEMENT Holding S.A. reduced this position by 100% ($30,232,357 -> $27,113). 2026-06-30
ALLIANCEBERNSTEIN L.P. ALLIANCEBERNSTEIN L.P. reduced this position by 39% ($128,920,976 -> $78,981,453). 2026-06-30
Point72 Asset Management, L.P. Point72 Asset Management, L.P. opened a new position worth $16,910,552. 2026-06-30
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ MASSACHUSETTS FINANCIAL SERVICES CO /MA/ increased this position by 2681% ($564,666 -> $15,703,076). 2026-06-30
AQR CAPITAL MANAGEMENT LLC AQR CAPITAL MANAGEMENT LLC increased this position by 89986% ($16,719 -> $15,061,449). 2026-06-30
RENAISSANCE TECHNOLOGIES LLC RENAISSANCE TECHNOLOGIES LLC reduced this position by 26% ($8,807,211 -> $6,550,118). 2026-06-30
Sixth Street Partners Management Company, L.P. Sixth Street Partners Management Company, L.P. opened a new position worth $11,838,506. 2026-06-30

Which Funds Hold ATRC

Largest reported positions as of 2026-06-30.

FundValueShares
VANGUARD PORTFOLIO MANAGEMENT LLC $87,498,916 3,127,195
Hood River Capital Management LLC $81,290,266 2,905,299
ALLIANCEBERNSTEIN L.P. $78,981,453 2,768,365
WELLINGTON MANAGEMENT GROUP LLP $64,533,296 2,306,408
VANGUARD CAPITAL MANAGEMENT LLC $61,287,756 2,190,413
NOMURA ASSET MANAGEMENT INTERNATIONAL INC. $48,525,000 1,734,279
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $36,267,928 1,296,209
GEODE CAPITAL MANAGEMENT, LLC $31,665,130 1,131,439
DIMENSIONAL FUND ADVISORS LP $27,419,645 979,973
Champlain Investment Partners, LLC $26,261,105 938,567

Data compiled from public SEC filings. This is informational reporting, not investment advice.

Defilade Capital Management, L.P.: 13F Portfolio Moves Tracked Quarterly

Table summarizing Defilade Capital Management L.P.'s 13F portfolio changes for the quarter ending 2026-03-31, including new positions, increases, reductions, and exits.

This page tracks Defilade Capital Management, L.P.’s institutional portfolio moves as disclosed in its SEC Form 13F filings, updated every quarter as new filings become available. Because 13F filings report only quarter-end snapshots rather than exact trade dates, all activity below is described as occurring during the quarter ending 2026-03-31, and future updates will build … Read more