Investors expect the bank to announce another plan for significant buybacks following the Federal Reserve's next stress-test announcement.
The bank was downgraded by Atlantic Equities analyst Richard Staite, in part because of its "poor performance" in last week's stress tests.
Despite the large amounts of share buybacks, some of the nation's biggest banks have diluted common shareholders over the past two years.
Most bank stocks end mixed after 29 of 30 banks pass the first round of the Federal Reserve's annual stress tests.
Bank of America passed the first round of the Federal Reserve's stress tests, but without much room to spare.
The Fed was upbeat about the results of its expanded round of bank stress tests, but Zions Bancorporation of Salt Lake City failed the test.
Large-cap bank stocks are strong heading into the Federal Reserve's announcement of stress test results, but the "main event" is next week.
This year's augmented stress tests could cause Citi some pain, but the bank should still be able to return plenty of capital to investors.
Most bank stocks rose as the broad market pulled back, after the FOMC tapered as expected and shed light on when sort-term interest rates might rise.
The nation's largest bank agrees to sell its physical commodities trading business to Mercuria Energy Group for $3.5 billion in cash.