After hitting a new high early in the day, prices pull back as investors lock in profits ahead of Friday's employment data.
Prices rally again as the private sector unexpectedly sheds 39,000 employees.
Concerns over the dollar and yen send prices rallying to new highs.
Prices set records again on the back of a weaker US dollar.
Eurozone worries, positive data in the US, a stronger dollar and end-of-quarter trading were pushing prices in different directions.
As the third quarter winds down, prices hang on to record highs.
After an early drop, prices settled at a new record high as traders adjusted their portfolios ahead of the third quarter's close.
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