Renaissance Technologies (RenTech)'s ACM Position Overview
Renaissance Technologies (RenTech) (via Renaissance Technologies LLC) currently holds 662,277 shares of AECOM (ACM) worth $56.17 M, representing 0.09% of the portfolio. First purchased in 2013-Q4, this long-term strategic position has been held for 41 quarters.
Based on 13F filings since 2013, Renaissance Technologies (RenTech) has maintained a long-term strategic position in ACM, representing a significant commitment to this investment thesis. Largest addition occurred in Q4 2019, adding 1.57 M shares. Largest reduction occurred in Q3 2020, reducing 1.52 M shares.
Analysis based on 13F filings available since 2013 Q2
Renaissance Technologies (RenTech)'s AECOM (ACM) Holding Value Over Time
Track share changes against reported price movement
Quarterly AECOM (ACM) Trades by Renaissance Technologies (RenTech)
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q1 2026 | +24,700 | Add 3.87% | 662,277 | $84.82 |
| Q4 2025 | +187,600 | Add 41.69% | 637,577 | $95.33 |
| Q3 2025 | +187,250 | Add 71.27% | 449,977 | $130.47 |
| Q2 2025 | -83,650 | Reduce 24.15% | 262,727 | $112.86 |
| Q1 2025 | +19,900 | Add 6.10% | 346,377 | $92.73 |
| Q4 2024 | -198,700 | Reduce 37.83% | 326,477 | $106.82 |
| Q3 2024 | +198,100 | Add 60.57% | 525,177 | $103.27 |
| Q2 2024 | +16,100 | Add 5.18% | 327,077 | $88.14 |
| Q1 2024 | +48,400 | Add 18.43% | 310,977 | $98.08 |
| Q4 2023 | +251,000 | Add 2168.09% | 262,577 | $92.43 |
| Q3 2023 | +11,577 | New Buy | 11,577 | $83.01 |
| Q2 2023 | -66,677 | Sold Out | 0 | $0.00 |
| Q1 2023 | -191,300 | Reduce 74.15% | 66,677 | $0.08 |
| Q4 2022 | +257,977 | New Buy | 257,977 | $0.08 |
| Q2 2022 | -144,077 | Sold Out | 0 | $0.00 |
| Q1 2022 | +34,900 | Add 31.97% | 144,077 | $76.81 |
| Q4 2021 | -67,100 | Reduce 38.07% | 109,177 | $77.35 |
| Q3 2021 | -278,900 | Reduce 61.27% | 176,277 | $63.15 |
| Q2 2021 | +119,800 | Add 35.72% | 455,177 | $63.32 |
| Q1 2021 | -482,513 | Reduce 58.99% | 335,377 | $64.11 |
| Q4 2020 | -830,125 | Reduce 50.37% | 817,890 | $49.78 |
| Q3 2020 | -1.52 M | Reduce 47.93% | 1.65 M | $41.84 |
| Q2 2020 | -1.34 M | Reduce 29.71% | 3.17 M | $37.58 |
| Q1 2020 | +1.32 M | Add 41.63% | 4.5 M | $29.85 |
| Q4 2019 | +1.57 M | Add 97.33% | 3.18 M | $43.13 |
| Q3 2019 | +631,100 | Add 64.39% | 1.61 M | $37.56 |
| Q2 2019 | +571,777 | Add 140.00% | 980,177 | $37.85 |
| Q1 2019 | +408,400 | New Buy | 408,400 | $29.67 |
| Q4 2018 | -233,077 | Sold Out | 0 | $0.00 |
| Q3 2018 | +233,077 | New Buy | 233,077 | $32.66 |
| Q1 2018 | -245,477 | Sold Out | 0 | $0.00 |
| Q4 2017 | -21,400 | Reduce 8.02% | 245,477 | $37.15 |
| Q3 2017 | +207,133 | Add 346.70% | 266,877 | $36.81 |
| Q2 2017 | -332,933 | Reduce 84.79% | 59,744 | $32.34 |
| Q1 2017 | -430,300 | Reduce 52.29% | 392,677 | $35.59 |
| Q4 2016 | +822,977 | New Buy | 822,977 | $36.36 |
| Q1 2015 | -333,577 | Sold Out | 0 | $0.00 |
| Q4 2014 | -61,223 | Reduce 15.51% | 333,577 | $30.37 |
| Q3 2014 | +394,800 | New Buy | 394,800 | $33.75 |
| Q1 2014 | -365,100 | Sold Out | 0 | $0.00 |
| Q4 2013 | +365,100 | New Buy | 365,100 | $29.43 |
Renaissance Technologies (RenTech)'s AECOM Investment FAQs
Renaissance Technologies (RenTech) first purchased AECOM (ACM) in Q4 2013, acquiring 365,100 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Renaissance Technologies (RenTech) has held AECOM (ACM) for 41 quarters since Q4 2013.
Renaissance Technologies (RenTech)'s largest addition to AECOM (ACM) was in Q4 2019, adding 3,179,477 shares worth $137.13 M.
According to the latest 13F filing for Q1 2026, Renaissance Technologies (RenTech)'s firm, Renaissance Technologies LLC, owns 662,277 shares of AECOM (ACM), valued at approximately $56.17 M.
As of the Q1 2026 filing, AECOM (ACM) represents approximately 0.09% of Renaissance Technologies (RenTech)'s publicly disclosed stock portfolio, making it one of their key holdings.
Renaissance Technologies (RenTech)'s peak holding in AECOM (ACM) was 4,503,015 shares, as reported at the end of Q1 2020.