The ticker symbol "SIRI" on public stock exchanges refers to the common stock of Sirius XM Holdings Inc., the corporate entity that owns and operates the satellite radio service known as SiriusXM. Therefore, while "SIRI" is the identifier used to purchase equity in the company on the NASDAQ stock exchange, it is fundamentally distinct from the actual satellite radio service platform itself. If you are a subscriber looking to control your radio using voice commands, "Siri" (Apple’s digital assistant) may work with compatible vehicle CarPlay interfaces to launch the SiriusXM mobile application, but the ticker symbol is strictly for financial market identification and investor tracking purposes.