For the three months ended March 31, New York-based MBIA says it earned $696.7 million in net income available to common shareholders, or $3.34 per share.
Analysts polled by Thomson Reuters, on average, were expecting a loss of 33 cents per share.
The stock is jumping in after-hours trading. MBIA shares are up $1.12, or 16 percent, to $8.08 in late trading, after closing the regular session down 3.5 percent at $6.96.
A service of YellowBrix, Inc.