Benzinga's Top Downgrades

Analysts at Piper Jaffray downgraded Sarepta Therapeutics Inc SRPT from Neutral to Underweight. The target price for Sarepta Therapeutics has been lowered from $15 to $6. Sarepta Therapeutics shares fell 47.49 percent to $7.85 in pre-market trading. Bank of America downgraded Canadian National Railway (USA) CNI from Buy to Underperform. Canadian National Railway shares closed at $65.18 on Monday. Analysts at Deutsche Bank downgraded U.S. Bancorp USB from Buy to Hold. US Bancorp shares closed at $43.05 on Monday. Evercore ISI Group downgraded Zions Bancorporation ZION from Buy to Hold. Zions Bancorp shares dropped 2.57 percent to $26.59 in pre-market trading. Analysts at Cantor Fitzgerald downgraded Whiting Petroleum Corp WLL from Buy to Hold. Whiting Petroleum shares closed at $11.07 on Monday.