NEW YORK — JPMorgan Chase & Co., the biggest US bank, reached a settlement with regulators to resolve claims tied to its home loan business and said it would buy back up to $3 billion of shares.

The agreement in principle with the Securities and Exchange Commission covers two investigations related to mortgage-backed bonds handled by JPMorgan and Bear Stearns, which the bank acquired in 2008, New York-based JPMorgan said Thursday in a filing.