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.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q4 2016Hancock Classic ValueSell-564,8012,228,974$81,045
Q4 2016Greenhaven AssociatesSell-185,5601,694,347$61,606
Q3 2016Greenlight CapitalSell-1,065,1352,004,571$59,595
Q3 2016Hancock Classic ValueSell-703,4232,793,775$83,059
Q3 2016Greenhaven AssociatesBuy370,9921,879,907$55,890
Q2 2016Greenlight CapitalSell-165,0003,069,706$97,525
Q2 2016Hancock Classic ValueBuy239,9043,497,198$111,106
Q2 2016Greenhaven AssociatesBuy1,508,9151,508,915$47,938
Q1 2016Hancock Classic ValueBuy623,4043,257,294$100,292
Q4 2015Hancock Classic ValueSell-159,7162,633,890$79,096
Q4 2015Greenlight CapitalSell-3,234,7063,234,706$97,138
Q3 2015Hancock Classic ValueSell-3,6652,793,606$76,852
Q3 2015Greenlight CapitalSell-44,0926,469,412$177,974
Q2 2015Hancock Classic ValueSell-22,1942,797,271$92,534
Q2 2015Greenlight CapitalSell-44,0006,513,504$215,467
Q2 2015Atlantic Investment ManagementBuy19,430463,750$15,340,850
Q1 2015Atlantic Investment ManagementBuy444,320444,320$13,694
Q1 2015Hancock Classic ValueBuy763,6392,819,465$86,896
Q1 2015Greenlight CapitalSell-95,7006,557,504$202,103
Q4 2014Hancock Classic ValueBuy1,290,8012,055,826$62,435
Q4 2014Renaissance Technologies LLCSell-61,223333,577$10,131
Q4 2014Greenlight CapitalBuy3,613,2046,653,204$202,058
Q3 2014Hancock Classic ValueBuy5,875765,025$25,820
Q3 2014Renaissance Technologies LLCBuy29,700394,800$13,325
Q3 2014Greenlight CapitalBuy3,040,0003,040,000$102,601
Q2 2014Hancock Classic ValueBuy230,894759,150$24,445
Q1 2014Hancock Classic ValueBuy143,831528,256$16,994
Q4 2013Hancock Classic ValueBuy19,350384,425$11,314
Q4 2013Renaissance Technologies LLCBuy365,100365,100$10,745
Q3 2013Hancock Classic ValueBuy117,550365,075$11,416

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.