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Amentum Holdings shares owned by Thompson, Siegel, & Walmsley

Quarter-by-quarter ownership of Amentum Holdings (AMTM) shares owned by Thompson, Siegel, & Walmsley from 13F filings

Historical chart of Thompson, Siegel, & Walmsley investment in Amentum Holdings

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All positions including Amentum Holdings held by Thompson, Siegel, & Walmsley consolidated in one spreadsheet with up to 7 years of data

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Quarterly reported holdings in Amentum Holdings by Thompson, Siegel, & Walmsley

Quarter filed Position value Share count Share price at filing
2025-09-30 $65M 2.7M 23.95
2025-06-30 $66M 2.8M 23.61
2025-03-31 $61M 3.3M 18.20
2024-12-31 $41M 1.9M 21.03
2024-09-30 $11M 342k 32.25