* S&P 500 ends up slightly after paring sharp early gains
* Euro falls on euro zone outlook
* U.S. jobs data due on Friday (Updates with U.S. market closing)
By Caroline Valetkevitch
NEW YORK, Sept 3 (Reuters) - The euro fell 1 percent on Thursday on a darkening euro zone outlook, while U.S. stocks pared sharp early gains to end barely higher as investors grew cautious ahead of Friday's August jobs report.
Global stock markets rallied earlier in the session following a pledge from European Central Bank President Mario Draghi to beef up or prolong the bank's economic stimulus if necessary.
The comments came as the bank cut its inflation and growth forecasts for the euro zone and weighed on the euro. ID:nL5N1190VG
Nervousness ahead of the U.S. Labor Department's monthly jobs report on Friday and what it may mean for the U.S. interest rate outlook took out most of the early gains in stocks late in the session. ID:nL1N118288
The Federal Reserve, which meets on September 16-17, has said it will raise rates when it sees sustained economic recovery. While the labor market has strengthened, inflation remains below the Fed's 2 percent target.
"After a waterfall decline like we had over a week ago, you can have violent moves both up and down. That's a little of what we're seeing now, as well as positioning in advance of not just the jobs number tomorrow, but a long weekend where we will be digesting the jobs number and whatever else we get over the weekend," said Mark Luschini, chief investment strategist at Janney Montgomery Scott in Philadelphia.
The Dow Jones industrial average .DJI rose 23.38 points, or 0.14 percent, to 16,374.76, while the benchmark S&P 500 .SPX gained 2.27 points, or 0.12 percent, to 1,951.13.
The Nasdaq Composite .IXIC dropped 16.48 points, or 0.35 percent, to 4,733.50.
U.S. markets will be closed on Monday for the Labor Day holiday.
MSCI's all-country stock index .MIWD00000PUS rose 0.5 percent, while the FTSEuroFirst .FTEU3 leading index of 300 shares closed up 2.4 percent. Germany's DAX shot up 2.7 percent .GDAXI .
Economic data showing the U.S. trade deficit shrank in July to its lowest level in five months as exports rose broadly also helped U.S. stocks in early trading. Other reports showed activity in the global manufacturing and service sectors expanded in August at the same pace as in July, with both the U.S. and euro zone doing better than Asia. ID:nL1N1191KE
China's stock markets, the root of much of the global volatility in recent weeks, were closed on Thursday for the start of a two-day holiday. ID:nL4N1171LM
The euro fell, surrendering most of the solid gains it put up against the dollar since China devalued the yuan last month.
During Draghi's news conference, the euro EUR= dropped 1.4 percent against the dollar to touch a two-week low of $1.1108. It was last off 0.90 percent at $1.1122 after earlier this week reaching a high of $1.1332 as investors spooked by the Chinese markets turmoil moved heavily into the euro and yen.
Oil prices inched higher in see-saw trade, following the gains in U.S. equities for a second day despite a weekly build in U.S. crude inventories.
Brent's front-month contract LCOc1 , settled up 18 cents at $50.68 a barrel. At one point during the session it had risen above $52.
U.S. crude's front-month contract CLc1 gained 50 cents, settling at $46.75. It went above $48 earlier.
U.S. BONDS RISE
U.S. Treasuries prices rose after the dovish outlook from the ECB made U.S. government debt more attractive than European counterparts. But caution ahead of Friday's U.S. employment report limited gains.
Benchmark 10-year Treasury notes US10YT=RR were last up 6/32 in price to yield 2.17 percent.