How Institutional Funds Moved on ATRO

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

FundChangeQuarter
WESTWOOD HOLDINGS GROUP INC WESTWOOD HOLDINGS GROUP INC opened a new position worth $34,964,634. 2026-06-30
Ophir Asset Management Pty Ltd Ophir Asset Management Pty Ltd opened a new position worth $31,349,377. 2026-06-30
Point72 Asset Management, L.P. Point72 Asset Management, L.P. reduced this position by 29% ($37,851,925 -> $26,895,516). 2026-06-30
Warberg Asset Management LLC Warberg Asset Management LLC increased this position by 1710% ($1,731,375 -> $31,335,581). 2026-06-30
EMERALD ADVISERS, LLC EMERALD ADVISERS, LLC increased this position by 217% ($13,165,512 -> $41,766,340). 2026-06-30
Pertento Partners LLP Pertento Partners LLP increased this position by 48% ($54,407,171 -> $80,742,943). 2026-06-30
MILLENNIUM MANAGEMENT LLC MILLENNIUM MANAGEMENT LLC exited a position previously worth $29,223,531. 2026-06-30
Sixth Street Partners Management Company, L.P. Sixth Street Partners Management Company, L.P. opened a new position worth $24,051,335. 2026-06-30

Which Funds Hold ATRO

Largest reported positions as of 2026-06-30.

FundValueShares
AMERICAN CENTURY COMPANIES INC $116,746,894 1,436,706
VANGUARD CAPITAL MANAGEMENT LLC $115,336,544 1,419,352
Capital International Investors $107,639,109 1,324,626
Pertento Partners LLP $80,742,943 993,637
GEODE CAPITAL MANAGEMENT, LLC $73,960,186 909,961
NEXT CENTURY GROWTH INVESTORS LLC $60,383,168 743,086
DIMENSIONAL FUND ADVISORS LP $50,833,249 625,563
Point72 Asset Management, L.P. $50,646,376 11,574,000
Capital World Investors $46,860,285 576,671
EMERALD ADVISERS, LLC $41,766,340 513,984

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

Capital World Investors: 13F Portfolio Moves Tracked Quarterly

Capital World Investors 13F portfolio moves for the quarter ending 2026-03-31

Capital World Investors’s portfolio moves, tracked quarter by quarter. This profile follows the institutional investor’s Form 13F disclosures over time, giving a running record of new positions, exits, and adjustments as they are reported to the SEC. Because 13F filings only reveal a snapshot of holdings at quarter-end, this page will be refreshed with each … Read more