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Fiserv vs Amentum Holdings: FISV and AMTM compared
Fiserv is the larger company: $5.2B of revenue in its latest quarter (Q3 2026) against $3.5B for Amentum Holdings (Q3 FY26). Fiserv is growing faster (-1% against -2% a year earlier). Amentum Holdings is more profitable, with an operating margin of 4.9% against -105.7%.
Where the money goes: FISV and AMTM
Fiserv (FISV) · Q3 2026
Fiserv, Q3 2026: revenue $5.2B (-1% year over year), operating margin -105.7%, net loss $5.9B, operating cash flow $1.0B. The chart follows the revenue to costs, profit and cash.
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.
| Fiserv (FISV) | Amentum Holdings (AMTM) | |
|---|---|---|
| Latest quarter | Q3 2026 | Q3 FY26 |
| Revenue | $5.2B | $3.5B |
| Revenue growth, Y/Y | -1% | -2% |
| Operating margin | -105.7% | 4.9% |
| Net earnings | −$5.9B | $66.0M |
| Net margin | -114.3% | 1.9% |
| Operating cash flow | $1.0B | $146M |
| Free cash flow | $530M | $135M |
| Market value | $33.4B | $5.2B |
| P/E | — | 26.0× |
| Analysts’ mean target | $61.42 | $29.25 |
Where the revenue comes from
Fiserv
- Processing and services revenue: $4.2B (81%)
- Product revenue: $965M (19%)
Amentum Holdings
- GES: $2.0B (58%)
- DS: $1.5B (42%)
Questions
Which is bigger, Fiserv or Amentum Holdings?
Fiserv is the larger company: $5.2B of revenue in its latest quarter (Q3 2026) against $3.5B for Amentum Holdings (Q3 FY26).
Is Fiserv or Amentum Holdings growing faster?
Fiserv is growing faster (-1% against -2% a year earlier).
Which is more profitable, Fiserv or Amentum Holdings?
Amentum Holdings is more profitable, with an operating margin of 4.9% against -105.7%.
More: Fiserv earnings · how Fiserv makes money · Amentum Holdings earnings · how Amentum Holdings makes money
From the companies' latest 10-Q, 10-K or earnings release (10-Q filed Nov 4, 2026; 10-Q filed Aug 11, 2026). Fiscal quarters can end on different dates. Not investment advice.