Favorable Federal Reserve stress test results are a better omen for Citigroup than other U.S. bank giants, CNBC "Fast Money" trader Tim Seymour said.

"I think they have the most to gain," said Seymour, who is long in the stock.

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On Thursday, all 31 tested banks got favorable marks in the Fed's annual test. It gauges how well the banks can withstand a hypothetical economic shock.

The result bodes well for Citigroup, which failed to meet requirements last year, Seymour said. Citigroup closed Thursday slightly down, around $53 per share.

It also re-affirmed his confidence in Bank of America, in which he holds a long stake.

Trader Brian Kelly liked Bank of America stock, as well, because it was cheaper than many other banks coming in.

"A lot of these banks had a tremendous run coming into this," he said.

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Bank of America closed Thursday 1 percent higher around $16 per share. Trader Karen Finerman also expressed confidence in the stock, as she has a long stake in it.

Trader Guy Adami looked at U.S. Bancorp, saying it has "been the most conservative along the way."

Disclosures:

Tim Seymour

Tim Seymour is long AAPL, T, BAC, C, DIS, F, GE, GM, GOOGL, INTC, FXI and SUNE. Tim's firm is long BABA, BIDU, MCD, NKE, NOK, SBUX, TTM, TSL and WB.

Brian Kelly

Brian Kelly is long BTC=, U.S. dollar, GLD, CTRL calls, HYG puts, BBRY, BBRY call spreads and TLT. He is short copper, EWA, EWG, EWQ, EWZ, EWW, JJC, Australian dollar, British pound, Canadian dollar, euro, yen and yuan.

Karen Finerman

Karen Finerman is long BABA, BAC, C, FINL, FL, GOOG, GOOGL, JPM, M and KORS. She is short DIA. Her firm is long AAPL, BAC, C, CMLS, DIS, FINL, FBT, FL, GPS, GLNG, GOOG, GOOGL, IBB, JPM, M, KORS, XBI and SUNE. Her firm is long calls GPS. Her firm is short SPY, IWM and USO. Karen Finerman is on the board of GrafTech International.

Guy Adami

Guy Adami is long CELG, EXAS and INTC. Guy Adami's wife, Linda Snow, works at Merck.