By Anora Mahmudova, MarketWatch

NEW YORK (MarketWatch) -- U.S. stocks declined on Wednesday after Federal Reserve Chairwoman Janet Yellen said that rate hikes would happen after about six month from the time tapering bond purchases is finished.

Yellen fielded questions from the press following the Fed policy announcement. in her first news conference as the Fed chairwoman, succeeding Ben Bernanke. The FOMC decided to trim the bond purchases by another $10 billion this month and changed the way it targets unemployment and inflation in deciding short-term interest rates.

The Fed said it would now consider a "wide range" of factors instead of relying mainly on the unemployment rate. The Fed statement also stressed that the bank could keep short-term rates below what is viewed as "normal" even if employment levels and inflation hit its targets.

The S&P 500 (SPX) fell 14 points, or 0.8%, to 1,857.25 after the announcement. The Dow Jones Industrial Average (DJI) dropped 131 points, or 0.8%, to 16,207.45.

The Nasdaq Composite (RIXF) shed 36 points, or 0.8%, to 4,29.29.

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See also: Live blog and video of the Fed decision and the Janet Yellen news conference.

"Things where down, but not a lot until Yellen dropped the bomb that QE would be done by this fall. Of course, with five meetings to go and $10-$15 billion taper per meeting, that brings us right to October. Still, this comment caught many traders off guard and provided some afternoon fireworks to the downside," said Ryan Detrick, senior technical strategist at Schaeffer's Investment Research.

"We think it is premature to think about the rate hikes at this point, as there will be many data points between the time bond purchases are done and economy is healthy enough," said Jim Russell, senior equity strategist at U.S. Bank Wealth Management.

Yields on 10-year Treasurys surged, gold prices fell further and the dollar spiked against the Yen after the Fed announcement.

Earlier, a batch of mixed earnings did little to influence cautious sentiment.

Among individual stocks, shares in KB Home (KBH) jumped 5.6% after the home maker swung to profit in its fiscal first quarter, beating analysts estimates.

Shares of Oracle Corp. (ORCL) fell 0.9% after the business-software group's adjusted profit and revenue growth wasn't as strong as analysts had forecast.

FedEx Corp. (FDX) was little changed following the release of its fiscal third-quarter earnings that fell short of Wall Street's expectations. FedEx said severe winter weather dragged down its earnings for the quarter ended Feb. 28.

General Mills Inc. (GIS) shares were 0.1% lower after the food company reported quarterly profit mostly in line with expectations.

In overseas markets, Asia had a mixed day, with the Nikkei 225 giving up a more than 1.2% gain at one point to close up just 0.4%, while Chinese stocks went nowhere. European markets slipped, while the FTSE 100 index rose after the release of minutes from the latest Bank of England Monetary Policy meeting and the latest jobs data. (GBPUSD)

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