Flagstar Bancorp said first-quarter earnings should exceed analysts' expectations, in part because of strong mortgage originations.

The banking company said it made $4.8 billion of mortgage loans in the first quarter, up 33% from a year earlier.

Thomas J. Hammond, Flagstar chief executive, said in a statement that technology was a significant contributor to loan production. The high loan volume should bring in "large amounts of fee revenue," he said.

"This revenue stream ... should translate into quarterly earnings which exceed current industry analyst expectations," Mr. Hammond said.

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