NEW YORK, 2018 - A rise in oil prices to three-week highs helped lift equity markets worldwide on Tuesday, while the U.S. dollar jumped ahead of a meeting of Federal Reserve policymakers, who are expected to go ahead with the first of at least three U.S. rate hikes this year.

U.S. technology stocks lagged broader markets, continuing a sell-off sparked by reports of large-scale misuse of Facebook user data. Facebook Inc FB.O shares lost 2.5 percent, continuing a slide that took nearly 7 percent off their price on Monday. While stocks on Wall Street climbed, Facebook's drop kept the gains in check.

The Dow Jones Industrial Average .DJI rose 116.36 points, or 0.47 percent, to 24,727.27, the S&P 500 .SPX gained 4.02 points, or 0.15 percent, to 2,716.94 and the Nasdaq Composite .IXIC rose 20.06 points, or 0.27 percnet, to 7,364.30.

There were other tech-related problems, as well. An accident with an Uber test car UBER.UL on Monday that resulted in the first fatality involving a fully autonomous vehicle also weighed on Silicon Valley sentiment.

Shares in European chipmakers faced pressure, while Germany's SAP SAPG.DE declined 0.5 percent, hit by a knock-on effect from U.S. business software peer Oracle, whose quarterly revenue missed analysts' estimates.

“There certainly are some stocks where valuations look somewhat stretched... so we’re focusing our exposure within the technology sector on the cheaper end of the market,” said Mike Bell, global market strategist at JPMorgan Asset Management.

“We’re a bit more cautious on the more expensive and some of the more popular names in the sector,” he added.

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FOCUS ON THE DOLLAR

The U.S. dollar climbed to a one-week high against the Japanese yen as traders limbered up for the start of a two-day Fed Reserve meeting.

With a quarter-point hike - its sixth since the Fed began raising interest rates in late 2015 - baked into market prices, major currencies were largely moving in ranges.

“Euro/dollar is being buffeted by cross currents, especially as both central banks (Fed and the ECB) are normalizing policy, but it needs an unexpected policy action to jolt markets,” said Neil Jones, Mizuho’s London head of currency hedge fund sales.

Markets expect at least two more U.S. rate hikes after Wednesday this year, although analysts acknowledged that the central bank’s ‘dot plot’ could potentially point to as many as four.

The Fed bets kept long-term U.S. bond yields edging higher, with short-dated yields up too.

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The yield on 10-year Treasuries was up at almost 2.89 percent US10YT=RR, 6 basis points below the four-year high of 2.957 percent touched a month ago. Two-year notes US2YT=RR hit a 9-1/2-year high of 2.33 percent.

Among major commodities, oil prices jumped in line with the dollar as investors remained wary of growing crude supply, although tensions between Saudi Arabia and Iran provided some support. [O/R]

U.S. crude CLcv1 rose 2.24 percent to $63.52 per barrel and Brent LCOcv1 was last at $67.37, up 2 percent.

The potential for a trade war cast a shadow over export currencies after U.S. President Donald Trump imposed steep tariffs on steel and aluminum. The government is expected to unveil up to $60 billion in new tariffs on Chinese imports by Friday.

U.S. businesses were alarmed, with several large U.S. retail companies, including Wal-Mart Inc WMT.N and Target Corp TGT.N, on Monday urging Trump not to impose massive tariffs on goods imported from China.

The dollar index .DXY, tracking the greenback against a basket of major currencies, rose 0.74 percent, with the euro EUR= down 0.75 percent to $1.2241.

The Japanese yen weakened 0.42 percent versus the greenback to 106.54 per dollar, while sterling GBP= was at $1.3996, down 0.19 percent on the day.