Capital One Financial Corp.'s third-quarter profit more than doubled as revenue jumped and loan-loss provisions declined sharply from a year ago.

Shares were up 4.7% to $38.96 in after-hours trading, as results easily topped analysts' expectations.

The card-issuer-turned-bank and its industry have seen financial results improve of late, with earnings returning this year as credit-loss provisions slow and delinquency rates ease.

Capital One posted a profit of $803 million, or $1.76 a share, up from $394 million, or 87 cents a share, a year earlier. Earnings from continuing operations climbed to $1.79 from 96 cents. Revenue jumped 13% to $4.02 billion.

Analysts surveyed by Thomson Reuters expected a profit of $1.17 on revenue of $3.8 billion.

On a managed basis, which includes securitized loans still managed by Capital One, loan-loss provisions were $867 million, down 61% from a year ago but 20% higher than the second quarter. The net charge-off rate fell to 4.82% from 6% and 5.36%, respectively, while delinquencies declined to 3.71% from 4.55% and 3.81%.

The charge-off rate for Capital One's U.S. card business was 8.23%, down from 9.64% a year ago and the second quarter's 9.49%. Delinquencies were 4.53%, below 5.38% and 4.79%, respectively. A number of banks have reported an improved performance at their credit-card businesses this year.

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