Tesla is most painful stock for short sellers in 2017

A Tesla logo is seen on media day at the Paris auto show, in Paris, France, September 30, 2016. REUTERS/Benoit Tessier/File Photo By Noel Randewich | SAN FRANCISCO SAN FRANCISCO Traders short selling Tesla’s (TSLA.O) soaring stock have lost $3.7 billion this year, eclipsing the combined losses of traders shorting Apple (AAPL.O), Amazon.com (AMZN.O) and Netflix…