NEW YORK (July 8, 2009)--Investors apparently can't shake their worries that economy won't be able to lock in a recovery by the end of the year and as a result, stocks finished mostly lower after zigzagging Wednesday as a mixed outlook on the economy from the International Monetary Fund and falling commodity prices added to a downbeat mood.

Another tumble in oil prices dragged energy shares lower and reflected concerns that demand for resources will remain weak as the economy struggles.

Major indexes ended mixed.

The Dow Jones industrial average was up 15 at 8,178.

The S&P 500 index was down 2 at 880.

The Nasdaq composite index was up 1 at 1,747.

About two stocks fell for every one that rose on the New York Stock Exchange, where volume came to 1.4 billion shares.