BUZZ-Petroleo Brasileiro SA: Delays Q3 results
** U.S-listed shares of Brazil's state-run oil company down 3.3 pct at $9.86 premarket
** Company postpones release of Q3 earnings report to Dec. 12 from Friday, the last day it could have done so without incurring hefty fines
** Delay to give more time to investigate corruption allegations
** Failure to report results before year-end could put company in default on billions of dollars in bonds
** Up to Thursday's close, company's U.S.-listed shares had fallen about 41 pct in one month
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