Among the sector activity stories for Thursday, Oct. 1, from AP Financial News:

ATLANTA (AP) ¿ Airline shares fell as oil prices ticked higher and the broader stock market was hammered.

SAN FRANCISCO (AP) ¿ Shares of Leap Wireless International Inc. and MetroPCS Communications Inc. fell after a JPMorgan analyst downgraded both companies to "Neutral," saying rising competition in the prepaid wireless market presents a challenge for them.

NEW YORK (AP) ¿ Shares of homebuilders slid as the broader market fell and a Fox-Pitt analyst predicted disappointing fourth-quarter sales for the sector.

CHICAGO (AP) ¿ Shares of the nation's largest department store retailers sagged in trading after the government and a private group released disappointing manufacturing and jobs reports.

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