Midday Leaders and Laggards: Nasdaq 100

The index, which includes 100 of the largest nonfinancial securities listed on the Nasdaq Stock Market, fell 1.69 points to 1,949.41 at about 11:30 a.m. The broader Nasdaq composite fell 2.87 points to 2,426.64.

A report from the Philadelphia Federal Reserve pointed to slumping demand and rising prices.

Shares of Sirius Satellite Radio Inc. slipped 33 cents, or 13.6 percent, to $2.11. A Goldman Sachs analyst cut his price target on the satellite radio company Thursday, and forecast large losses.

Shares of Expedia Inc. shed 82 cents, or 4 percent, to $19.85. Earlier in the session, the travel Web site's stock hit a 52-week low of $19.82.

Shares of Wynn Resorts Ltd. decreased $3.60, or 3.9 percent, to $89.81.

On the gaining side, shares of United Airlines parent UAL Corp. added 32 cents, or 4.9 percent, to $6.87 as crude oil prices fell on the New York Mercantile Exchange.

Shares of semiconductor companies rose. Broadcom Corp. gained $1.17, or 4.6 percent, to $26.47 and Marvell Technology Group Ltd. increased 67 cents, or 4.1 percent, to $17.02.

A Friedman, Billings, Ramsey & Co. analyst upgraded fellow chip maker Silicon Laboratories Inc. on Thursday.