AST SpaceMobilevs.Iridium Communications
ASTS vs IRDM · both in Space industry & satellites, part of the Defense, security & space value chain: Launch, satellite communications and space systems, civil and military.
AST SpaceMobile is about 5.2× larger than Iridium Communications by market cap; year to date, Iridium Communications leads (+172.2% vs −14.2%).
Side by side
| ASTS | IRDM | |
|---|---|---|
| Market cap | $27.9B | $5.3B |
| Price | $62.01 | $47.10 |
| Today | −0.5% | −0.4% |
| Return YTD | −14.2% | +172.2% |
| Return 1Y | +32.5% | +89.4% |
| P/E | — | 57.2 |
| P/S | 328.2 | 6.0 |
| P/B | 13.4 | 11.3 |
Data as of 2026-08-26 · updates daily after U.S. close
The two companies
AST SpaceMobileASTS
The idea is a satellite that an ordinary mobile phone can talk to directly. AST SpaceMobile is still building out the constellation.
Full ASTS profile →Iridium CommunicationsIRDM
Global coverage is the whole proposition. Iridium's network reaches every point on earth, from ships at sea to IoT sensors, with defense among its customers.
Full IRDM profile →More ASTS & IRDM comparisons
Other head-to-heads in the Space industry & satellites segment.
See where ASTS and IRDM sit in the full Defense, security & space map: every segment from suppliers to end markets.Open the Defense value chain →