Sphere Entertainment's stock soared over 10% on Monday following the opening of their new venue in Las Vegas over the weekend, with a performance from U2. The venue, The Sphere, plans to host live concerts and sporting events. The Sphere is a "next-generation entertainment medium" with a futuristic dome-shaped arena and wall-to-wall video screens. The company has plans to build another Sphere venue in London, pending approvals. Sphere Entertainment's current market cap sits at around $1.4 billion.