b'Carvana (CVNA) stock price today is down almost 42% so far. Wedbush downgraded the CVNA stock to underperform from neutral with a new $1.00 price target. This is due to bankruptcy concerns for the used car dealer. Carvana\\u2019s bonds have tumbled below $0.50 on the dollar in recent weeks, which could be an indication that traders believe there is a high probability that they will default. Kevin Green weighs in.'