Stock and bond mutual funds reported net inflows of $55.5 billion in May, up from inflows of $35.8 billion in the same month a year earlier, the Financial Research Corp. reports.

Corporate bond funds led for the month, gaining $20.9 billion in assets, compared to a net intake of $7.3 billion in May 2008, according to FRC, Boston. Domestic equity funds followed, netting $12.5 billion, up from net inflows of $4.4 billion the previous year.