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Amentum Holdings vs Fidelity National Information Services: AMTM and FIS compared
Amentum Holdings is the larger company: $3.5B of revenue in its latest quarter (Q3 FY26) against $3.5B for Fidelity National Information Services (Q3 2026). Fidelity National Information Services is growing faster (+27% against -2% a year earlier). Fidelity National Information Services is more profitable, with an operating margin of 19.1% against 4.9%.
Where the money goes: AMTM and FIS
Amentum Holdings (AMTM) · Q3 FY26
Amentum Holdings, Q3 FY26: revenue $3.5B (-2% year over year), operating margin 4.9%, net earnings $66.0M, operating cash flow $146M. The chart follows the revenue to costs, profit and cash.
Fidelity National Information Services (FIS) · Q3 2026
Fidelity National Information Services, Q3 2026: revenue $3.5B (+27% year over year), operating margin 19.1%, net earnings $357M, operating cash flow $976M. The chart follows the revenue to costs, profit and cash.
| Amentum Holdings (AMTM) | Fidelity National Information Services (FIS) | |
|---|---|---|
| Latest quarter | Q3 FY26 | Q3 2026 |
| Revenue | $3.5B | $3.5B |
| Revenue growth, Y/Y | -2% | +27% |
| Gross margin | — | 37.0% |
| Operating margin | 4.9% | 19.1% |
| Net earnings | $66.0M | $357M |
| Net margin | 1.9% | 10.3% |
| Operating cash flow | $146M | $976M |
| Free cash flow | $135M | $695M |
| Market value | $5.2B | $14.9B |
| P/E | 26.0× | 4.3× |
| Analysts’ mean target | $29.25 | $36.77 |
Where the revenue comes from
Amentum Holdings
- GES: $2.0B (58%)
- DS: $1.5B (42%)
Questions
Which is bigger, Amentum Holdings or Fidelity National Information Services?
Amentum Holdings is the larger company: $3.5B of revenue in its latest quarter (Q3 FY26) against $3.5B for Fidelity National Information Services (Q3 2026).
Is Amentum Holdings or Fidelity National Information Services growing faster?
Fidelity National Information Services is growing faster (+27% against -2% a year earlier).
Which is more profitable, Amentum Holdings or Fidelity National Information Services?
Fidelity National Information Services is more profitable, with an operating margin of 19.1% against 4.9%.
More: Amentum Holdings earnings · how Amentum Holdings makes money · Fidelity National Information Services earnings · how Fidelity National Information Services makes money
From the companies' latest 10-Q, 10-K or earnings release (10-Q filed Aug 11, 2026; 10-Q filed Nov 4, 2026). Fiscal quarters can end on different dates. Not investment advice.