Rolls-Royce (RR) vs Siemens (SIE)
Rolls-Royce (RR) and Siemens (SIE) side by side: both in Industrials, listed on London Stock Exchange and Deutsche Börse Xetra. Siemens is the larger of the two by approximate market capitalization (about 1.5×).
| Field | Rolls-Royce | Siemens |
|---|---|---|
| Legal name | Rolls-Royce Holdings plc | Siemens AG |
| Ticker | RR | SIE |
| Exchange | London Stock Exchange XLON | Deutsche Börse Xetra XETR |
| Jurisdiction | United Kingdom | Germany |
| Sector | Industrials | Industrials |
| Industry | Aerospace engines and defense | Industrial Technology |
| Market cap ≈ | $172.9bn | $263.9bn |
| Founded | 1906 | 1847 |
| Reporting currency | GBP | EUR |
| LEI | 213800EC7997ZBLZJH69 | W38RGI023J3WT1HWRP32 |
| ISIN | GB00B63H8491 | DE0007236101 |
| FIGI | BBG001S634G4 | BBG001S69GV4 |
| Index membership | FTSE 100 | DAX 40, EURO STOXX 50 |
| Held by (covered funds) | — | — |
Rolls-Royce
British maker of civil and military aero engines, power systems and naval nuclear propulsion, distinct from the BMW-owned car brand. Its shares re-rated sharply in the mid-2020s on a turnaround in civil aerospace and defense demand.
Market caps are computed from each issuer's own filed share count times the close on 2026-08-28, not copied from a vendor; LEI from GLEIF (CC0), ISIN read from each issuer's own primary listing document with its ISO 6166 check digit validated, FIGI from OpenFIGI, MIC from the ISO 10383 registry — full provenance on Sources. Not real-time, not investment advice. Both sides as data: /api/v1/companies/rolls-royce · /api/v1/companies/siemens