Lightning Round: Citigroup, Bank of America, Chipotle Mexican Grill and More

Citigroup: C is a buy, Cramer said.

ConocoPhillips : COP has a natural gas business, Cramer said, and it's a buy.

• Cramer's Top 20 Earnings To Watch: February 2010

ChipotleMexican Grill: CMG is a buy, Cramer said.

Bank of America : "Start nibbling at the stock," Cramer said.

American Public Education : Cramer is neutral on APEI.

Cramer's charitable trust owns Bank of America.

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