With speculation mounting over Citigroup's future, investment pros are worried that the stock market is not nearing a bottom—but is ready to fall further.

U.S. government debt prices fell on Friday with their yields rising from historic lows, as Wall Street regained its footing following Thursday's carnage that sent it to an 11-year low.

The U.S. government debt market rallied Thursday, sending the two-year note yield at record low, as recession fears hammered global stock markets and spurred safety bids for bonds and cash.

U.S. government debt prices rallied on Wednesday, pushing the 2-year note's yield down to a three-decade low on firming bets that the Federal Reserve will cut rates as the economy worsens and a steady exodus out of riskier assets into Treasuries' relatively safe harbor.

U.S. Treasury debt prices rose Tuesday after a government report showed a record drop in producer prices, the latest evidence that inflation pressure is waning due to plunging energy prices.

U.S. Treasury debt prices were mostly higher on Monday, extending Friday's sharp gains, as Japan's economy slipped into a downturn and more gloomy economic news from the United States fueled fears of a global recession, supporting safe-haven demand for government bonds.

The U.S. Treasury debt market rallied Friday, as a record drop in retail sales fanned fears of a deep recession and revived safe-haven bids for bonds.

U.S. Treasurys pared losses and the two-year Treasury note yield fell to a new five-year low as another sharp stock slide boosted the bid for safe-haven U.S. government debt.

U.S. Treasury debt prices  rose Wednesday after a one-day holiday as a lower opening on Wall Street fed the bid for safe-haven U.S. government debt.

U.S. Treasury debt prices fell Monday as traders cut prices ahead of billions of dollars of new supply and as stock market gains and a restructured bailout package for American International Group damped investors' appetite for safe-haven government debt.

U.S. Treasury debt prices traded lower Friday after October jobs data was not as dire as pessimists had feared.

U.S. Treasury debt prices rose modestly Thursday after another day of steep stockmarket losses revived the bid for safe-haven U.S. government debt.

U.S. Treasurys were little changed Wednesday as safe-haven bidding sparked by signs of a deteriorating economy was offset by worries that a spate of debt issuance will dilute the Treasuries market.

U.S. short-term Treasurys dipped Tuesday in thin volume as climbing stocks cut off any safe-haven bid while Americans headed to the polls to elect a new president.

U.S. Treasury debt prices rose Monday, lifted by safe-haven bidding following a report showing factory activity fell to its lowest in 26 years in October, the latest in a string of gloomy economic data.