NEW YORK (CNNMoney.com) - Bond prices gained modestly Monday, lowering corresponding yields, as investors awaited a speech by recently appointed Fed Chairman Ben Bernanke.

The dollar gained against the euro and the yen.

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The benchmark 10-year Treasury note rose 3/32 to 98-23/32 to yield 4.66 percent, down from 4.67 late Friday.

The 30-year bond climbed 9/32 to 96-24/32, yielding 4.70 percent, down from 4.71 in the previous session. Bond prices and yields move in opposite directions.

The five-year note rose one tick, yielding 4.61 percent, and the two-year note was relatively unchanged, yielding 4.65 percent, in line with the return on the 10-year note and resulting in a flatter yield curve.

Bond prices ticked higher as investors looked ahead to Bernanke's speech to the Economic Club of New York at 7 p.m. ET Monday.

"Bernanke is the big focus today," John Davies, fixed income strategist at WestLB, told Reuters.

Bernanke isn't expected to break much new ground ahead of next week's Fed meeting, but investors will be closely watching his speech for clues about the future course of rate hikes.

The talk comes just a week before central bank policy makers are expected to raise the Fed's key short-term interest rate for the 15th consecutive time, to 4.75 percent. Many analysts and investors expect the central bank to boost rates at least once more after that.

Investors also are keeping an eye on this week's economic readings, including Tuesday's report on wholesale prices. Economists surveyed by Briefing.com expect the Labor Department's Producer Price Index to slip 0.2 percent in February, after having gained a modest 0.3 percent in January.

In currency trading, the euro bought $1.2167, down from $1.2195 late Friday, while the dollar rose to ¥116.33, up from ¥115.82 in the previous session.

-- from staff and wire reports

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