Existing-home sales increased in October to their strongest pace since earlier this summer, but continual supply shortages led to fewer closings on an annual basis for the second straight month, according to the National Association of Realtors.

Total existing-home sales, which are completed transactions that include single-family homes, townhomes, condominiums and co-ops, increased 2.0 percent to a seasonally adjusted annual rate of 5.48 million in October from a downwardly revised 5.37 million in September. After last month's increase, sales are at their strongest pace since June (5.51 million), but still remain 0.9 percent below a year ago.