AECOM (ACM) Stock Institutional Trading Activity


AECOM (ACM) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Renaissance Technologies LLC, Sequoia Financial Advisors, Hancock Classic Value, Greenhaven Associates, and Greenlight Capital. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

Explore more:

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q4 2025Renaissance Technologies LLCBuy187,600637,577$60,780,215
Q3 2025Sequoia Financial AdvisorsBuy542,209$288,209
Q3 2025Renaissance Technologies LLCBuy187,250449,977$58,708,499
Q2 2025Sequoia Financial AdvisorsBuy732,155$243,214
Q2 2025Renaissance Technologies LLCSell-83,650262,727$29,651,369
Q1 2025Renaissance Technologies LLCBuy19,900346,377$32,119,539
Q4 2024Renaissance Technologies LLCSell-198,700326,477$34,874,273
Q3 2024Sequoia Financial AdvisorsBuy2,0822,082$215,009
Q3 2024Renaissance Technologies LLCBuy198,100525,177$54,235,029
Q2 2024Renaissance Technologies LLCBuy16,100327,077$28,828,567
Q1 2024Renaissance Technologies LLCBuy48,400310,977$30,501
Q4 2023Renaissance Technologies LLCBuy251,000262,577$24,270
Q3 2023Renaissance Technologies LLCSell-55,10011,577$961
Q1 2023Renaissance Technologies LLCSell-191,30066,677$5,622
Q4 2022Renaissance Technologies LLCBuy113,900257,977$21,910
Q1 2022Renaissance Technologies LLCBuy34,900144,077$11,067
Q4 2021Renaissance Technologies LLCSell-67,100109,177$8,445
Q3 2021Renaissance Technologies LLCSell-278,900176,277$11,132
Q2 2021Renaissance Technologies LLCBuy119,800455,177$28,822
Q1 2021Renaissance Technologies LLCSell-482,513335,377$21,501
Q1 2021Hancock Classic ValueSell-45,873419,152$26,872
Q4 2020Hancock Classic ValueSell-64,388465,025$23,149
Q4 2020Renaissance Technologies LLCSell-830,125817,890$40,715
Q3 2020Hancock Classic ValueSell-88,620529,413$22,151
Q3 2020Renaissance Technologies LLCSell-1,517,1001,648,015$68,953
Q2 2020Hancock Classic ValueSell-667,983618,033$23,226
Q2 2020Renaissance Technologies LLCSell-1,337,9003,165,115$118,945
Q1 2020Hancock Classic ValueSell-1,337,8821,286,016$38,388
Q1 2020Renaissance Technologies LLCBuy1,323,5384,503,015$134,415
Q4 2019Hancock Classic ValueBuy119,6132,623,898$113,169

Frequently asked questions about ACM activity

  • Which institutional owners are buying ACM?

    Institutional owners buying ACM 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 ACM activity?

    "Buy" means an investor increased their reported position in ACM compared to the prior reporting period. This reflects growing exposure to AECOM (ACM) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in ACM increasing?

    Institutional interest in ACM 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.