First Manhattan Co
- SEC CIK
- 0000728083
- Latest filing
- Aug 14, 2026
AMTM holding history
Amentum Holdings, Inc. in every 13F filed by First Manhattan Co, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.
AMTM overviewAll 13F holders of AMTMFull Q2 2026 holdings
- Shares (Q2 2026)
- 14,242
- Value
- $294.4K
- % of portfolio
- <0.1%
- Quarters held
- 7
- Since Q4 2024
| Quarter | Shares | Value | % of portfolio | Share change | Action | All holders |
|---|---|---|---|---|---|---|
| Q2 2026 | 14,242 | $294.4K | <0.1% | +125+0.9% | Added | Holders |
| Q1 2026 | 14,117 | $368.2K | <0.1% | 00.0% | Unchanged | Holders |
| Q4 2025 | 14,117 | $409.4K | <0.1% | −83−0.6% | Reduced | Holders |
| Q3 2025 | 14,200 | $340.1K | <0.1% | −1,235−8.0% | Reduced | Holders |
| Q2 2025 | 15,435 | $364.4K | <0.1% | −574−3.6% | Reduced | Holders |
| Q1 2025 | 16,009 | $291.4K | <0.1% | −1,593−9.1% | Reduced | Holders |
| Q4 2024 | 17,602 | $370.2K | <0.1% | +17,602 | New | Holders |