* U.S. Fed widely expected to pare bond purchases by $10 bln
* Analysts see Fed's Yellen tweaking forward guidance on rates
* Dollar rises against yen and euro (Updates prices, adds quote)
By Angela Moon
NEW YORK, March 19 (Reuters) - The world's major stock and bond markets were little changed on Wednesday ahead of comments from U.S. Federal Reserve Chair Janet Yellen at the conclusion of the Fed's two-day policy meeting.
The U.S. central bank is expected to trim its bond-buying stimulus by $10 billion a month for a third time in a row on Wednesday, as well as update its guidance on when interest rates will eventually rise. The Fed statement is due at 2 p.m. (1600 GMT), followed by a press conference by Yellen at 2:30 p.m.
A policy decision to steadily scale back stimulus, while likely noting the economy's recent weakness is not solely down to harsh winter weather, should soothe any concerns investors might have had surrounding Yellen's first policy-setting meeting as the Fed chief.
The shift in focus to the Fed and away from geopolitical concerns over Russia and Ukraine put a floor under stocks, which had opened lower following a strong start to the week.
"The Fed is taking control of everyone's attention today," said Mike Cullinane, head of Treasuries trading at D.A. Davidson in St. Petersburg, Florida. "It's pretty assured they will continue to taper, probably by another $10 billion."
U.S. government debt prices were little changed. The benchmark 10-year Treasury notes were unchanged in price, with a yield of 2.681 percent, just above the 200-day moving average of 2.679 percent, according to Reuters data.
On Wall Street, the S&P 500 was within striking distance of all-time highs.
FedEx Corp, considered an economic bellwether because of the massive volume of goods it ships around the world, sounded a sour note in its outlook.
The Dow Jones industrial average fell 8.92 points or 0.05 percent, to 16,327.27, the S&P 500 lost 0.91 points, or 0.05 percent, to 1,871.34, and the Nasdaq Composite dropped 5.421 points, or 0.13 percent, to 4,327.892.
The FTSEurofirst 300 edged down 0.03 percent, at 1,305.68 points, while the euro zone's blue-chip Euro STOXX 50 index was up 0.2 percent at 3,078.78 points.
Germany's DAX was up 0.7 percent at 9,308 points, boosted by a 7 percent surge in shares of BMW, making the stock Europe's biggest gainer. The automaker said it expects profits to rise this year.
DOLLAR UP AHEAD OF FED STATEMENT
The dollar got a lift from expectations the Federal Reserve will look beyond the drag of a harsh winter on America's economy and keep unwinding its monetary stimulus, though the dollar's gains against the euro and yen were held back by some trepidation before Yellen's inaugural policy review as Fed chief, traders said.
The dollar edged up 0.13 percent against the yen, to 101.55 yen, staying above a one-month low of 101.20 yen hit on March 3.
The euro fetched $1.3916, down 0.14 percent on the day but not far from last Thursday's 2-1/2-year high of $1.3967.
The dollar index was up at 79.49, a gain of 0.09 percent.
"For the Fed to light a fire under the dollar it would tend to take a less dovishly worded statement or any hint from the Fed that short-term rates could rise sooner than current forecasts of around mid-next year," Joe Manimbo, senior market analyst at Western Union Business Solutions, said in a note.
Sterling rose as high as $1.6653, rebounding from a one-month low struck on Tuesday, helped by data showing wages ticking higher and a steadily improving jobs market.
The number of Britons claiming jobless benefits fell more than expected. Wages rose 1.4 percent year-on-year, which though higher than forecast was still below inflation.
Oil fell to around $106 a barrel on Wednesday, reaching a six-week low, as concerns eased about an escalation of the Ukraine crisis and on a larger-than-expected rise in U.S. crude inventories.
Brent was down 75 cents at $106.04 a barrel after reaching an intra-day low of $105.81, the lowest since Feb. 5. U.S. crude rose 45 cents to $100.15. (Reporting by Angela Moon; Editing by Leslie Adler)