Commenting on the lender's latest set of results, chief Michael Corbat said: "We had revenues in numerous products we have been investing in, tightly managed our expenses, and again saw loan growth in both our consumer and institutional businesses".
Overall, however, trading dropped 11 percent, dragged under by Citi's large fixed income division.
"Investors are taking exception to both companies adding to their credit card loan reserves", said Jason Goldberg, analyst at Barclays.
USA banks have spent hundreds of millions of dollars attracting consumers to their credit cards with offers of cash-back on spending, plane tickets and free borrowing on balances transferred from other cards.
"In general, the promotional balances, while a range of offers vary, they do go up to 21 months".
In early notes to clients, analysts characterized the results as "solid" or "pretty good", given problems in bond trading that have affected Wall Street banks for some time.
In the latest U.S. economic data, a Labour Department report showed its producer price index for final demand climbed 0.4 percent in September, following a 0.2 percent increase in August.
JPMorgan, the largest US bank by assets, also topped expectations as loan growth and higher interest rates more than offset a 27 percent slide in bond trading.
Quarterly consumer banking revenue increased 3% globally from a year ago, to $8.43 billion, led by a 10% gain in Mexico.
But hopes President Donald Trump would stimulate trading activity and greater economic demand through tax reforms and a loosening in financial regulations have failed to materialize. The trends bode poorly for Goldman Sachs Group Inc GS.N , which has struggled more in bond trading recently than other Wall Street banks.
The drop in C stock is likely connected to its fixed income markets revenue for the third quarter of 2017.
The main growth driver in the quarter was the global consumer business.
Citigroup's stock has risen 26% this year, by far the best among the U.S.'s six biggest banks, thanks in part to the announcement of a plan to return $60 billion in capital through 2020.