A sign of the times: Citibank shares are now eligible for your local dollar store. The bank’s shares fell below $1 for the first time ever today in trading, MarketWatch reports. They reached 97¢ at midday, about 2 years after trading at an all-time high of $57. Investors apparently have little faith that Citi, which has received $45 billion in government aid, can rebound. (More Citibank stories.)