The central bank's Open Market Committee as anticipated left interest rates unchanged at 5.25 percent, as it has done since last summer. The statement that accompanied the decision was little changed from the one the Fed released after its last meeting in March; the assessment said the Fed is keeping its inflation watch the priority despite a slower economy.

Though some investors were hoping the Fed would raise the possibility of a future rate cut, they weren't surprised by the committee's stance. Moreover, they were relieved to hear the Fed is not more inclined than it has been to raise rates, which would make access to capital more expensive and potentially hurt the stock market.

"The Fed said we're not going anywhere," Larry Smith, chief investment officer at Third Wave Global Investors. "They're not saying inflation is going to the moon, they're not saying it's a huge problem right now, but they're concerned that inflation won't come down to their comfort range."

Stocks drew support Wednesday from more takeover news, particularly speculation about a possible bid by mining company BHP Billiton Ltd. for rival Rio Tinto Group. Investors were also pleased about a government report that showed that after three months of declines, the nation's gasoline inventories rose last week. If they keep increasing, fuel costs for U.S. drivers are likely to ease.

According to preliminary calculations, the Dow Jones industrial average rose 53.80, or 0.40 percent, to 13,362.87, after reaching a new trading high of 13,369.29. It was the blue chip index's 21st record close since the beginning of the year.

The Standard & Poor's 500 index advanced 4.86, or 0.32 percent, to 1,512.58 — a new six-and-a-half-year high. The index is approaching its closing record of 1,527.46, reached March 24, 2000.

The technology-dominated Nasdaq composite index rose 4.59, or 0.18 percent, to 2,576.34.

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