Shares of XM (NASDAQ:XMSR) and Sirius (NASDAQ:SIRI) have been gaining ground lately. Will shares rise even higher or have investors missed out? Will the merger happen? What would it mean for investors? In this installment of Missing Out, I ask Motley Fool senior analyst Rick Munarriz.

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Neither Rick nor Mac owns any of the stocks discussed. The Fool has a disclosure policy.