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 2019Renaissance Technologies LLCBuy1,568,2003,179,477$137,131
Q3 2019Renaissance Technologies LLCBuy631,1001,611,277$60,520
Q3 2019Hancock Classic ValueSell-248,4982,504,285$94,061
Q2 2019Renaissance Technologies LLCBuy571,777980,177$37,100
Q2 2019Hancock Classic ValueBuy74,6172,752,783$104,193
Q1 2019Renaissance Technologies LLCBuy175,323408,400$12,117
Q1 2019Greenhaven AssociatesSell-31,0001,613,689$47,878
Q1 2019Hancock Classic ValueSell-561,9112,678,166$79,461
Q4 2018Hancock Classic ValueBuy815,3983,240,077$85,862
Q4 2018Greenhaven AssociatesBuy8,6001,644,689$43,584
Q3 2018Renaissance Technologies LLCSell-12,400233,077$7,612
Q3 2018Hancock Classic ValueBuy74,4092,424,679$79,190
Q3 2018Greenhaven AssociatesBuy3,4001,636,089$53,435
Q2 2018Hancock Classic ValueBuy37,5602,350,270$77,629
Q2 2018Greenhaven AssociatesSell-10,0601,632,689$53,928
Q1 2018Hancock Classic ValueBuy86,6882,312,710$82,402
Q1 2018Greenhaven AssociatesBuy43,2281,642,749$58,531
Q4 2017Renaissance Technologies LLCSell-21,400245,477$9,119
Q4 2017Hancock Classic ValueSell-1,7512,226,022$82,697
Q4 2017Greenhaven AssociatesSell-6,8581,599,521$59,422
Q3 2017Renaissance Technologies LLCBuy207,133266,877$9,824
Q3 2017Hancock Classic ValueBuy1952,227,773$82,004
Q3 2017Greenhaven AssociatesSell-6,0681,606,379$59,131
Q2 2017Renaissance Technologies LLCSell-332,93359,744$1,932
Q2 2017Hancock Classic ValueBuy1,8832,227,578$72,018
Q2 2017Greenhaven AssociatesSell-58,0001,612,447$52,130
Q1 2017Renaissance Technologies LLCSell-430,300392,677$13,975
Q1 2017Hancock Classic ValueSell-3,2792,225,695$79,212
Q1 2017Greenhaven AssociatesSell-23,9001,670,447$59,451
Q4 2016Renaissance Technologies LLCBuy489,400822,977$29,923

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.