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 1.7× larger than Booz Allen Hamilton by market cap; year to date, Booz Allen Hamilton leads (−18.6% vs −33.9%).
Side by side
| BAH | LDOS | |
|---|---|---|
| Market cap | $8.8B | $15.1B |
| Price | $73.94 | $121.68 |
| Today | +1.5% | +2.1% |
| Return YTD | −18.6% | −33.9% |
| Return 1Y | −34.0% | −39.9% |
| Since June 26, 2026 | +18.8% | +19.6% |
| P/E | 11.3 | 11.0 |
| P/S | 0.8 | 0.9 |
| P/B | 7.3 | 2.9 |
Data as of 2026-10-09 · 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
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.