Streaming service Quibi is exploring several strategic options including a possible sale, according to people familiar with the situation, as the company founded by Hollywood mogul Jeffrey Katzenberg struggles to sign up subscribers in a competitive online-video marketplace.
Quibi, which launched its short-form, mobile-focused video service in April, is also considering raising more money or going public through a merger with a special-purpose acquisition company, or SPAC—essentially a blank-check company that helps fund deals,…