One expert said 30-year fixed mortgage rates are 'most likely to be flat to perhaps somewhat lower of the next few weeks.'

On Sept.17, the Fed cut the short-term, federal funds rate to a target range of at 4% to 4.25%.

One Michigan wholesale mortgage lender has extended its interest rate price incentive program for refinancing, which was set to expire Sept. 16 and made that program available until Oct. 1.

Mortgage rates saw a decent decline in recent weeks, but would-be homebuyers still could see some zigging-and-zagging as markets digest the latest Federal Reserve rate cut and other economic news.

"It's not uncommon to see markets 'buy the rumor and sell the fact,' " said Keith Gumbinger, vice president at HSH.com , a mortgage research site.

Gumbinger said traders engaged in a "b

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