Benzinga's Top Downgrades By: Benzinga via Benzinga November 26, 2014 at 08:43 AM EST Analysts at Canaccord Genuity downgraded 21Vianet Group (NASDAQ: VNET) from Buy to Hold. The price target for 21Vianet Group is set to ... Read More >> Related Stocks: Copa Holdings S.A. Lionheart Holdings Cl A U.S. Silica Holdings Inc Vnet Group Inc