Unity Software’s Trading Debut Win Ends IPO Spree on High Note

Unity Software Inc., which makes software to design video games, jumped 31% in its trading debut, capping a week of big successes for newly public companies in the sector.

The San Francisco-based company raised $1.3 billion in an initial public offering at $52 a share that topped a marketed range of $44 to $48 that had been elevated earlier. The shares opened trading Friday at $75 and closed the day at $68.95, giving Unity Software a market value of $18 billion.

The offering was the fourth major listing on a U.S. exchange this week by a software maker. Snowflake ...