Federal regulators pledged $532 million in aid...

Federal regulators pledged $532 million in aid to a Michigan-based home building company to rescue a Houston savings institution. The Federal Savings and Loan Insurance Corp. is providing assistance in the form of a 10-year promissory note and guarantees against future loss to Pulte Diversified Cos., which is acquiring Champion Savings Assn. The transaction is the latest in a spate of more than 50 S&L; rescues since mid-August, to which regulators have committed more than $13 billion. Two weeks ago, Pulte agreed to acquire four other Houston area S&Ls; with federal assistance totaling $557 million.