NYSE:LDOS#2 of 11 in this industry2 markets
Leidos
government ITmission software and defence systems
Revenue$17.2Bfrom a sourced record
Markets named in2across this research
Incumbent in1the one to displace
Rank in industry2 / 11by revenue
01
Where it competes
Every market in this research that names Leidos. Where it is the named incumbent it leads the list. The entry signal is the market’s, not the company’s — it says how open that market is to someone new.
| Market | Role | Share | Entry signal |
|---|---|---|---|
| Defence Services & C5ISR Integration 541330 Engineering services |
Incumbent | — | 45% entry signal |
| Defence Mission Command & C5ISR Software — Command and Control, ISR Data Fusion and Battle Management 9111 Defence services |
Competitor | — | 32% entry signal |
02
Others in Engineering services
Ranked by revenue. Companies that disclose none follow, ordered by how many markets name them.
| 1 | L3Harris NYSE:LHX | $21.9B |
| 2 | Leidos NYSE:LDOS | $17.2B |
| 3 | Amentum Private | $14.4B |
| 4 | Booz Allen Hamilton NYSE:BAH | $11.2B |
| 5 | CACI International NYSE:CACI | $9.6B |
| 6 | SAIC Private | $7.3B |
| 7 | Parsons PSN | $6.4B |
| 8 | Calian TSX:CGY | $774M |
| 9 | BAE Systems BAESY | — |
| 10 | General Dynamics NYSE:GD | — |
| 11 | Peraton Private | — |
Company details are from the search.cos database (snapshot 2026-10-18); market roles, shares and sourced revenue are from the research records linked above. Filed under the industry it serves — a software vendor sits with the industry that buys from it. Ranks convert currencies at approximate rates to put companies in order; every figure shown is in the currency it was reported in.