 BidaskClub downgraded shares of International Bancshares NASDAQ:IBOC from a hold rating to a sell rating in a research note published on Thursday, BidAskClub reports. Separately, ValuEngine lowered shares of International Bancshares from a hold rating to a sell rating in a research report on Monday, October 21st. International Bancshares stock opened at 40.77 on Thursday. ... 