The Trade Desk's stock price plunged on Friday. Shares of The Trade Desk (TTD 0.18%) took a dive last week, plunging 39% on Friday after the ad tech company reported numbers that were in line with expectations, but showed that revenue growth was decelerating. The Trade Desk's revenue rose 19% year over year in Q2 to $694 million, which was its slowest growth rate in its history aside from a brief dip when the pandemic started. For the third quarter, the company indicated revenue growth would slow further, f ...