<div><p>The stock market retreated from a two-day rally as growth in the nation's service businesses fell short of expectations.</p><p>The Institute for Supply Management says Wednesday that its index of service activity rose to 50.5 in January from a revised 49.8 in December. The January reading was below analysts' forecast.</p><p>A disappointing outlook from drug maker Pfizer dragged health care stocks lower.</p><p>The Dow Jones industrial average is down 27 at 10,270 after a two-day gain of 230 points. The Standard & Poor's 500 index is down 6 at 1,100. The Nasdaq composite index is up 1 at 2,191.</p><p>Three stocks fell for every two that rose on the New York Stock Exchange. Volume totaled 1.1 billion shares, compared with 1.2 billion Tuesday.</p><img src="http://admatch-syndication.mochila.com/images/ad.gif?aid=68398319&bid=informcom" /></div><div id="copyright"><div>

Copyright 2010  <a href="http://www.ap.org">AP Features</a></div></div>