Largest aerospace and defense companies by market cap: 29 companies with a combined market value of $871.48 B. RTX Corporation (RTX) leads at $258.22 B. Aircraft manufacturers, defense contractors, and guided-missile makers ranked by market value. Rankings update as fresh market data lands; click any company for its financial statements, charts, and SEC filing history.
| Rank | Company | Industry | Market Cap |
|---|---|---|---|
| 1 | Aircraft Engines & Engine Parts | $258.22 B | |
| 2 | Aircraft | $136.81 B | |
| 3 | Guided Missiles & Space Vehicles & Parts | $130.58 B | |
| 4 | Aircraft Engines & Engine Parts | $69.36 B | |
| 5 | Aircraft Parts & Auxiliary Equipment, NEC | $65.74 B | |
| 6 | Aircraft Parts & Auxiliary Equipment, NEC | $31.41 B | |
| 7 | Guided Missiles & Space Vehicles & Parts | $30.40 B | |
| 8 | Ordnance & Accessories, (No Vehicles/Guided Missiles) | $25.55 B | |
| 9 | AArxis, Inc.ARXS | Aircraft Parts & Auxiliary Equipment, NEC | $19.37 B |
| 10 | Aircraft Engines & Engine Parts | $18.30 B | |
| 11 | Aircraft & Parts | $14.32 B | |
| 12 | SStandardAero, Inc.SARO | Aircraft Engines & Engine Parts | $8.41 B |
| 13 | LLoar Holdings Inc.LOAR | Aircraft Parts & Auxiliary Equipment, NEC | $6.83 B |
| 14 | Guided Missiles & Space Vehicles & Parts | $6.75 B | |
| 15 | Guided Missiles & Space Vehicles & Parts | $6.26 B | |
| 16 | Aircraft | $5.21 B | |
| 17 | Aircraft | $5.19 B | |
| 18 | AAEVEX Corp.AVEX | Aircraft | $4.40 B |
| 19 | KKarman Holdings Inc.KRMN | Aircraft Parts & Auxiliary Equipment, NEC | $4.25 B |
| 20 | BBETA Technologies, Inc.BETA | Aircraft | $4.17 B |
| 21 | Aircraft & Parts | $4.15 B | |
| 22 | Aircraft | $2.94 B | |
| 23 | VVoyager Technologies, Inc.VOYG | Guided Missiles & Space Vehicles & Parts | $2.93 B |
| 24 | Aircraft Parts & Auxiliary Equipment, NEC | $2.67 B | |
| 25 | Guided Missiles & Space Vehicles & Parts | $2.54 B | |
| 26 | Aircraft Parts & Auxiliary Equipment, NEC | $2.07 B | |
| 27 | Guided Missiles & Space Vehicles & Parts | $1.33 B | |
| 28 | YYork Space Systems, Inc.YSS | Guided Missiles & Space Vehicles & Parts | $734.07 M |
| 29 | Aircraft | $581.67 M |
Industry membership comes from each company's SEC-registered SIC classification, parsed from EDGAR submissions. Market capitalizations refresh continuously from cached market data combined with SEC-reported share counts. See the full market cap rankings or the IPO filings tracker.