AECOM
MX ˙ BMV ˙ US00766T1007
SecurityMX:ACM / AECOM
InstitutionRhumbline Advisers
Latest Disclosed Ownership351,241 shares
Latest Disclosed Value $ 29,792,215
Rhumbline Advisers reports 0.21% increase in ownership of ACM / AECOM

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 351,241 shares of AECOM (MX:ACM) valued at $29,792,215 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 350,503 shares of AECOM. This represents a change in shares of 0.21% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-12 2026-03-31 13F AECOM COM 00766T100 351,241 738 0.21 29,792 -10.84 0.0255
2026-02-13 2025-12-31 13F AECOM COM 00766T100 350,503 -10,034 -2.78 33,413 -28.97 0.0270
2025-11-06 2025-09-30 13F AECOM COM 00766T100 360,537 -6,980 -1.90 47,039 13.41 0.0378
2025-08-12 2025-06-30 13F AECOM COM 00766T100 367,517 -1,883 -0.51 41,478 21.09 0.0355
2025-05-29 2025-03-31 13F/A-1 AECOM COM 00766T100 369,400 -1,308 -0.35 34,254 -13.50 0.0320
2025-04-08 2025-03-31 13F AECOM COM 00766T100 369,400 -1,308 34,254 0.0320
2025-05-29 2024-12-31 13F/A-1 AECOM COM 00766T100 370,708 -1,858 -0.50 39,599 2.92 0.0354
2025-01-30 2024-12-31 13F AECOM COM 00766T100 370,708 -1,858 39,599 0.0354
2024-11-12 2024-09-30 13F AECOM COM 00766T100 372,566 -9,306 -2.44 38,475 14.31 0.0347
2024-08-01 2024-06-30 13F AECOM COM 00766T100 381,872 -7,521 -1.93 33,658 -11.87 0.0316
2024-05-09 2024-03-31 13F AECOM COM 00766T100 389,393 -4,786 -1.21 38,192 4.83 0.0367
2024-02-08 2023-12-31 13F AECOM COM 00766T100 394,179 -6,950 -1.73 36,434 9.38 0.0382
2023-11-09 2023-09-30 13F AECOM COM 00766T100 401,129 -4,331 -1.07 33,310 -3.00 0.0387
2023-08-08 2023-06-30 13F AECOM COM 00766T100 405,460 7,829 1.97 34,338 103,954.55 0.0385
2023-05-11 2023-03-31 13F AECOM COM 00766T100 397,631 -6,333 -1.57 34 -99.90 0.0414
2023-02-14 2022-12-31 13F AECOM COM 00766T100 403,964 2,557 0.64 34,309 25.01 0.0461
2022-11-10 2022-09-30 13F AECOM COM 00766T100 401,407 8,064 2.05 27,444 6.98 0.0409
2022-08-11 2022-06-30 13F AECOM COM 00766T100 393,343 27,934 7.64 25,654 -8.60 0.0374
2022-05-12 2022-03-31 13F AECOM COM 00766T100 365,409 -9,355 -2.50 28,067 -3.18 0.0361
2022-02-10 2021-12-31 13F AECOM COM 00766T100 374,764 8,342 2.28 28,988 25.27 0.0355
2021-11-12 2021-09-30 13F AECOM COM 00766T100 366,422 -18,653 -4.84 23,140 -5.10 0.0313
2021-08-05 2021-06-30 13F AECOM COM 00766T100 385,075 -14,060 -3.52 24,383 -4.71 0.0320
2021-05-06 2021-03-31 13F AECOM COM 00766T100 399,135 -16,489 -3.97 25,589 23.68 0.0348
2021-02-10 2020-12-31 13F AECOM COM 00766T100 415,624 13,501 3.36 20,690 22.97 0.0286
2020-11-12 2020-09-30 13F AECOM COM 00766T100 402,123 -12,111 -2.92 16,825 8.08 0.0264
2020-08-13 2020-06-30 13F AECOM COM 00766T100 414,234 5,673 1.39 15,567 27.64 0.0260
2020-05-06 2020-03-31 13F AECOM COM 00766T100 408,561 37,366 10.07 12,196 -23.82 0.0256
2020-02-05 2019-12-31 13F AECOM COM 00766T100 371,195 2,828 0.77 16,010 15.71 0.0268
2019-10-23 2019-09-30 13F AECOM COM 00766T100 368,367 -3,302 -0.89 13,836 -1.65 0.0253
2019-08-14 2019-06-30 13F AECOM COM 00766T100 371,669 488 0.13 14,068 27.74 0.0264
2019-05-01 2019-03-31 13F AECOM COM 00766T100 371,181 -19,597 -5.01 11,013 6.34 0.0213
2019-01-31 2018-12-31 13F AECOM COM 00766T100 390,778 121,377 45.05 10,356 17.70 0.0225
2018-11-07 2018-09-30 13F AECOM COM 00766T100 269,401 -3,017 -1.11 8,799 -2.21 0.0170
2018-08-06 2018-06-30 13F AECOM COM 00766T100 272,418 585 0.22 8,998 -7.09 0.0181
2018-05-02 2018-03-31 13F AECOM COM 00766T100 271,833 -6,456 -2.32 9,685 -6.32 0.0202
2018-02-09 2017-12-31 13F AECOM COM 00766T100 278,289 2,513 0.91 10,338 1.84 0.0210
2017-11-06 2017-09-30 13F AECOM COM 00766T100 275,776 1,412 0.51 10,151 14.44 0.0221
2017-08-02 2017-06-30 13F AECOM COM 00766T100 274,364 -5,933 -2.12 8,870 -11.09 0.0202
2017-05-02 2017-03-31 13F AECOM COM 00766T100 280,297 13,249 4.96 9,976 2.74 0.0233
2017-01-27 2016-12-31 13F AECOM COM 00766T100 267,048 21,110 8.58 9,710 32.80 0.0246
2016-11-08 2016-09-30 13F AECOM COM 00766T100 245,938 10,011 4.24 7,312 -2.44 0.0201
2016-08-11 2016-06-30 13F AECOM COM 00766T100 235,927 10,370 4.60 7,495 7.92 0.0222
2016-05-02 2016-03-31 13F AECOM COM 00766T100 225,557 7,360 3.37 6,945 6.00 0.0215
2016-02-03 2015-12-31 13F AECOM COM 00766T100 218,197 -1,157 -0.53 6,552 8.58 0.0211
2015-11-04 2015-09-30 13F AECOM COM 00766T100 219,354 11,012 5.29 6,034 -12.45 0.0205
2015-08-04 2015-06-30 13F AECOM COM 00766T100 208,342 5,893 2.91 6,892 10.47 0.0220
2015-05-12 2015-03-31 13F AECOM COM 00766T100 202,449 16,399 8.81 6,239 10.42 0.0180
2015-02-06 2014-12-31 13F AECOM COM 00766T100 186,050 60,679 48.40 5,650 33.54 0.0164
2014-11-12 2014-09-30 13F AECOM TECHNOLOGY CORP COMMON S COM 00766T100 125,371 840 0.67 4,231 5.51 0.0127
2014-08-06 2014-06-30 13F AECOM TECHNOLOGY CORP COMMON S COM 00766T100 124,531 -19,102 -13.30 4,010 -13.22 0.0118
2014-05-06 2014-03-31 13F AECOM TECHNOLOGY CORP COMMON S COM 00766T100 143,633 -2,780 -1.90 4,621 7.24 0.0137
2014-02-03 2013-12-31 13F AECOM TECHNOLOGY CORP COMMON S COM 00766T100 146,413 -18,601 -11.27 4,309 -16.49 0.0127
2013-11-05 2013-09-30 13F AECOM TECHNOLOGY CORP COMMON S COM 00766T100 165,014 -1,644 -0.99 5,160 -2.60 0.0160
2013-08-07 2013-06-30 13F AECOM TECHNOLOGY CORP COMMON S COM 00766T100 166,658 166,658 5,298 0.0170
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.