Position history for FRONTIER CAPITAL MANAGEMENT CO LLC's holdings in AMENTUM HOLDINGS INC
FRONTIER CAPITAL MANAGEMENT CO LLC holds 4.9M shares of AMTM (AMENTUM HOLDINGS INC), worth $128.6M as of 2026-Q1. The position was decreased (-14.6% shares). AMTM represents 1.3% of FRONTIER CAPITAL MANAGEMENT CO LLC's portfolio.
Current Value
$128.6M
Current Shares
4.9M
Total Value Change
+$63.4M
Total Shares Change
+1.4M
Other major holders of AMTM: Invesco Ltd., BlackRock, Inc.
Decreased |
| 4.9M |
-14.6% |
| $128.6M |
| 1.3% |
| $30.66 |
0 |
| 2025-Q4 | Increased | 5.8M | +11.0% | $167.4M | 1.8% | $29.30 | 53 |
| 2025-Q3 | Decreased | 5.2M | -4.7% | $124.6M | 1.1% | $22.82 | 0 |
| 2025-Q2 | Increased | 5.5M | +52.6% | $128.9M | 1.2% | $23.45 | 66 |
| 2025-Q1 | New | 3.6M | - | $65.1M | 0.7% | $18.07 | 58 |