Booz Allen Hamiltonvs.Leidos
BAH vs LDOS · both in Communications & defense data, part of the Defense, security & space value chain: IT services, secure communications and data analytics for defense and intelligence.
Leidos is about 1.9× larger than Booz Allen Hamilton by market cap; year to date, Booz Allen Hamilton leads (−10.8% vs −23.3%).
Side by side
| BAH | LDOS | |
|---|---|---|
| Market cap | $9.4B | $17.7B |
| Price | $73.83 | $134.54 |
| Today | −1.8% | −2.8% |
| Return YTD | −10.8% | −23.3% |
| Return 1Y | −31.6% | −23.8% |
| P/E | 12.1 | 12.9 |
| P/S | 0.9 | 1.0 |
| P/B | 7.8 | 3.4 |
Data as of 2026-08-26 · updates daily after U.S. close
The two companies
Booz Allen HamiltonBAH
Consulting and technology work for the US government, weighted toward defense and intelligence, with AI a growing part of the mandate.
Full BAH profile →LeidosLDOS
Contracted IT services and data analysis for US defense and intelligence customers, with security systems alongside.
Full LDOS profile →More BAH & LDOS comparisons
Other head-to-heads in the Communications & defense data segment.
See where BAH and LDOS sit in the full Defense, security & space map: every segment from suppliers to end markets.Open the Defense value chain →