Amentum Holdings, Inc. (AMTM) vs Firefly Aerospace Inc. (FLY)
A side-by-side comparison of Amentum Holdings, Inc. and Firefly Aerospace Inc. across valuation, profitability, dividends, and growth — built entirely from reported fundamentals, as of October 2, 2026. Differences are shown without an overall score or investment verdict.
AMTM
Amentum Holdings, Inc.
$18.14IndustrialsDelayed quote: Oct 2, 2026, 4:00 PM EDT
FLY
Firefly Aerospace Inc.
$23.32IndustrialsDelayed quote: Oct 2, 2026, 4:00 PM EDT
Total return — AMTM vs FLY
growth of $100 · dividends reinvested · last 1yAMTM -28.6% (-28.6%/yr)FLY -62.1% (-62.1%/yr)AMTM compounded faster over this window
AMTM FLY
AMTM vs FLY: by the numbers
- •AMTM is the larger company ($4.43B vs $3.83B market cap).
- •AMTM is profitable (1.44% net margin) while FLY runs a net loss (-126.64%).
Metrics side by side
Valuation
| Metric | AMTM | FLY |
|---|---|---|
| P/E ratio | 21.86 | N/A |
| Forward P/E | 7.39 | N/A |
| P/S ratio | 0.31 | 13.34 |
| P/B ratio | 0.94 | 3.13 |
| EV / EBITDA | 7.44 | N/A |
Profitability
| Metric | AMTM | FLY |
|---|---|---|
| Gross margin | 8.73% | 19.27% |
| Operating margin | 4.10% | -154.25% |
| Net margin | 1.44% | -126.64% |
| ROE | 4.35% | -29.72% |
| ROIC | 4.71% | -24.61% |
Frequently asked
- Is AMTM or FLY more profitable?
- AMTM runs the higher net margin — AMTM at 1.44% versus FLY at -126.64%.
Go deeper
Dig into the metrics
Figures are sourced from reported fundamentals and the latest end-of-day price. This comparison is informational only and is not investment advice. Past performance does not predict future results. See our methodology. Compiled by TGMCharts Research · data verified October 2, 2026.