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ROCKWOOD RESEARCH · A CORPORATE FILINGS WEBSITE|STRAIGHT FROM THE SOURCE · SEC EDGAR|SPONSOREDYour message on this tape — bid on the Rockwood Ad Exchange · Rockwood Ad Exchange|
Rockwood Research
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ACM

AECOM

Services-Engineering Services · SIC 8711CIK 868857Held by 5 tracked managersEDGAR filings ↗10-K/10-Q ↗

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5 managers · Q2 2026 13F
0.07%
+12.8%
0.05%
(10.8%)
0.02%
+62.7%
0.01%
+63.3%
<0.01%
+50.7%

Weight = position value ÷ the manager's total 13F long-equity value in the same filing — one definition for every row. “1st obs.” marks a position with no earlier stored 13F to compare against — it is not shown as a purchase.