The Trade Desk (TTD), once a growth darling, is down on its luck. The digital advertising auction house offered up a rare double miss on Thursday. In response, the market traded TTD shares down over 20%, with shares exchanging hands in the $13 range. Management said it now expects revenue of at least $650 million versus $805 million consensus. Most observers will read this as a sign that earlier anxiety over Alphabet (GOOGL) and Amazon (AMZN) stepping into the digital advertising auction space was correct.