Stock ownership
AMENTUM HOLDINGS INC
- Ticker
- AMTM
- CUSIP
- 023939101
- Held by
- 1 fund
- Combined value
- $42,327,370
+% bought more, −% sold down — each fund's last-quarter move (change in share count).
| Fund | Quarter | Last quarter | Value | % of fund |
|---|---|---|---|---|
| Ruane Cunniff position history | Q1 2026 | −32% | $42,327,370 | 0.7% |