(Bloomberg) -- The stock of China’s biggest food delivery platform has almost halved since a January peak and if traders are right, the worst isn’t over.Most Read from BloombergIsrael Latest: Top US General Warns Iran to Stay Out of ConflictSchumer Confronts Xi on Israel-Hamas Stance in Rare MeetingIsrael Latest: Over 1,100 Dead; US Sends Warships to RegionBank of America’s Wrong-Way Rate Bet Hurts Moynihan’s Growth PledgeStocks Shrug Off Losses After Fedspeak; Oil Climbs: Markets WrapThe volati