Adtech company PubMatic, which develops infrastructure for programmatic ads, raises $118M in its IPO and hits a high of $33.16 after pricing shares at $20 (Luisa Beltran/Barron’s Online)

DoorDash opens at $182, a 75%+ rise over its IPO price  —  – Shares of DoorDash, a leading food delivery app, started trading on the New York Stock Exchange on Wednesday.  — The stock began trading at $182 per share.  — The company trades under the symbol “DASH.”