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Firefly Aerospace vs York Space Systems: FLY and YSS compared
Firefly Aerospace is the larger company: $118M of revenue in its latest quarter (Q2 2026) against $92.5M for York Space Systems (Q2 2026). Firefly Aerospace is growing faster (+657% against +10% a year earlier). York Space Systems is more profitable, with an operating margin of -44.6% against -80.9%.
Where the money goes: FLY and YSS
Firefly Aerospace (FLY) · Q2 2026
Firefly Aerospace, Q2 2026: revenue $118M (+657% year over year), operating margin -80.9%, net loss $92.3M, operating cash flow −$81.6M. The chart follows the revenue to costs, profit and cash.
York Space Systems (YSS) · Q2 2026
York Space Systems, Q2 2026: revenue $92.5M (+10% year over year), operating margin -44.6%, net loss $39.3M, operating cash flow −$102M. The chart follows the revenue to costs, profit and cash.
| Firefly Aerospace (FLY) | York Space Systems (YSS) | |
|---|---|---|
| Latest quarter | Q2 2026 | Q2 2026 |
| Revenue | $118M | $92.5M |
| Revenue growth, Y/Y | +657% | +10% |
| Operating margin | -80.9% | -44.6% |
| Net earnings | −$92.3M | −$39.3M |
| Net margin | -78.4% | -42.5% |
| Operating cash flow | −$81.6M | −$102M |
Where the revenue comes from
Firefly Aerospace
- Spacecraft Solutions Revenue: $108M (92%)
- Launch Revenue: $9.4M (8%)
Questions
Which is bigger, Firefly Aerospace or York Space Systems?
Firefly Aerospace is the larger company: $118M of revenue in its latest quarter (Q2 2026) against $92.5M for York Space Systems (Q2 2026).
Is Firefly Aerospace or York Space Systems growing faster?
Firefly Aerospace is growing faster (+657% against +10% a year earlier).
Which is more profitable, Firefly Aerospace or York Space Systems?
York Space Systems is more profitable, with an operating margin of -44.6% against -80.9%.
More: Firefly Aerospace earnings · how Firefly Aerospace makes money · York Space Systems earnings · how York Space Systems makes money
From the companies' latest 10-Q, 10-K or earnings release (10-Q filed Aug 11, 2026; 10-Q filed Aug 14, 2026). Fiscal quarters can end on different dates. Not investment advice.