Wall Street extended its retreat today after downbeat forecasts from companies such as eBay prompted investor worries that the market had risen too far. The three main indexes finished mixed for the week.

Wall Street retreated today after Federal Reserve chairman Alan Greenspan said the economy should post stronger growth by year’s end but cautioned that the threat of deflation remains.

A report suggesting that unemployment levels might be stabilising helped reassure Wall Street today and sent stocks moderately higher, although the gains were limited by news of a sluggish gross domestic product.

Wall Street tried but failed today to extend a one-day rebound, but succumbed to late selling on questions about AOL Time Warner’s accounting and pessimism about second-quarter earnings reports.