Agora, which helps app developers embed real-time voice and video communication, closed up 153% in its Nasdaq debut, after raising $350M in its IPO at $20/share (Russell Flannery/Forbes)

Russell Flannery / Forbes:
Agora, which helps app developers embed real-time voice and video communication, closed up 153% in its Nasdaq debut, after raising $350M in its IPO at $20/share  —  Grocery chain Albertsons might have been the best-known IPO in the U.S. this week among American investors …