Benzinga's Volume Movers By: Benzinga via Benzinga March 19, 2015 at 10:37 AM EDT Retrophin, Inc. (NASDAQ: RTRX) shares climbed 4.07% to $20.99. The volume of Retrophin shares traded was 2261% higher than normal. ... Read More >> Related Stocks: Amicus Therapeutics Esperion Theraptc GUESS Retrophin Inc