Pinterest Inc (NYSE:PINS) reported first-quarter earnings after the close last night, beating estimates with adjusted earnings of 20 per share on revenue of 740million.Theimage−sharingsocialmediafirmalsoissuedasecond−quarterrevenueforecastthatwashigherthanexpectations.Inresponse,PINSisup17.639.35, on track for its biggest single-session gain since the post-earnings pop on Oct 31.Options traders are piling on following the report. So far, 30,000 bullish bets have been e ...