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 4.4× larger than Iridium Communications by market cap; year to date, Iridium Communications leads (+178.3% vs −16.5%).
Side by side
| ASTS | IRDM | |
|---|---|---|
| Market cap | $22B | $5B |
| Price | $56.93 | $47.56 |
| Today | −6.1% | −1.7% |
| Return YTD | −16.5% | +178.3% |
| Return 1Y | −18.9% | +149.0% |
| Since June 26, 2026 | −20.3% | +9.3% |
| P/E | — | 54.0 |
| P/S | 190.6 | 5.7 |
| P/B | 11.6 | 10.7 |
Data as of 2026-10-08 · updates daily after U.S. close
Since June 26, 2026: the change in the closing price, from the daily closes Sectivia records itself since that date.
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.