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Stock picks: 13 trades in 77 seconds

Citigroup stock traded down more than 2 percent after hours, but Dan Nathan of RiskReversal.com said that it wasn't worth buying.

The bank reported quarterly earnings Oct. 14 but lowered its net income to $2.8 billion from $3.4 billion, lowering earnings per share to 88 cents from $1.07, on legal costs.

Read MoreCitigroup lowers reported third-quarter results because of legal costs

"I think you want to let these things wash out a little bit," Nathan said, adding that investors should wait to see what other legal liabilities could arise. "I don't think you jump right in right here."

On CNBC's "Fast Money," Tim Seymour of Triogem Asset Management said there was support for the stock around the $47 to $49 levels.

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Citigroup shares ended the day at $53.15 per share, up nearly 1 percent, before dipping in the after-hours session.

"It's about putting a little bit of rational thinking into a company that, quite frankly, continues to disappoint us," Seymour said, adding he was long the stock. "If you get a major selloff, these have been opportunities to buy."

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Stuart Frankel's Steve Grasso said that he would be looking at another financial name, Wells Fargo, whose stock is up 15 percent year to date.

"If you see a selloff in that, this is not going to be the same picture as a Citi," he said. "I would take advantage of that and buy that on a dip and stay away from a Citi, stay away from a Bank of America."

Brian Kelly of Brian Kelly Capital said that the issue was one of leadership, specifically how $600 million in legal costs were able to surprise executives at Citigroup. "What I'm saying is that you have to question that."

Kelly said that the write-down wasn't necessarily a "sell" signal.

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"If you're in Citigroup, don't panic and sell on it," he said. "I, personally, do not want to be in any of the banks, but that's based on what the yield curve is doing. The yield curve is starting to flatten, and that's not good for banks."

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