Hinge Health just broke open the digital health IPO market. Here's who's getting rich.

Hinge Health

• Hinge Health just went public in a watershed moment for the digital health industry.
• Its shares popped Thursday, jumping to over $39 a share, up 23% from its IPO price.
• Here's what Hinge Health's major investors' stakes are worth after its IPO.

Physical therapy startup Hinge Health finally went public Thursday in a watershed moment for the digital health market.

Hinge Health's stock price popped after debuting on the New York Stock Exchange...