 "Wall Street logs biggest two-day gain since financial crisis")
Wall Street rallied more than 2% on Thursday as strong US economic data and hints that a September interest-rate hike was unlikely fuelled optimism that the worst of recent market turmoil was over.
The Dow Jones industrial average scored its biggest two-day percentage gain since 2008, while the S&P 500 and Nasdaq Composite racked up their biggest two-day increases since 2009.
"The worst is probably behind us but it's going to take a while before we get back to normal and we might still see some downward risk," said Scott Brown, chief economist at Raymond James in St. Petersburg, Florida.
With Thursday's gains, the S&P has recovered about half of the 11% meltdown it suffered over a six-day losing streak caused by fears of slowing growth in China.
The market slump stopped on Wednesday after New York Fed President William Dudley said the case for a September hike had become "less compelling".
Data on Thursday showed that the US economy grew 3.7% in the second quarter - much faster than the previous estimate of 2.3%.
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"It's the US economy versus the global economy," said Peter Kenny, chief market strategist at Clearpool Group in New York. "Can the US economy prove the naysayers wrong? Well, so far it has been able to do that and today's data really puts a line under that."
Traders gave a one-in-four chance that the Fed would increase interest rates in September even after the upbeat economic growth number.
Fed interest rates kept near zero helped fuel the stock market to historic levels since the financial crisis.
Even if the Fed does not tighten policy in September, expectations of an eventual hike will remain a major overhang on sentiment, warned Jim Bianco, president of Bianco Research in Chicago.
"The era of easy money would officially be over," Bianco said. "A rate hike would mean putting the needle away, no more drugs, time for the methadone."
To that end, investors will keep an eye on an annual conference of some of the world's top central bankers in Jackson Hole, Wyoming over the next few days for further clues on interest rates.
The Dow Jones industrial average rose 2.27% to end at 16,654.77 and the S&P 500 jumped 2.43% to 1,987.66.
The Nasdaq Composite added 2.45% to 4,812.71.
In the past two sessions, the Dow is up 6.3%, the S&P is 6.4% higher and the Nasdaq has gained 6.8%.
All 10 major S&P sectors rose sharply, with the energy index's 4.9% jump leading the advancers as oil prices soared more than 9% in one of the biggest one-day rallies in years.
Giving the biggest boost to the S&P and Nasdaq, shares of Apple surged 2.94%. The company invited journalists to a Sept. 9 event, where it is expected to unveil new iPhones.
Tesla was up 8.07% after its Model S P85D received the highest possible score in tests by Consumer Reports magazine.
The recent pummelling in US shares reduced valuations some investors had seen as pricey. The S&P 500's valuation was about 15.4 times expected earnings as of Wednesday's close, compared to around 17 for much of 2015, according to the most recent available Thomson Reuters StarMine data.
Advancing issues outnumbered decliners on the NYSE by 2,803 to 324. On the Nasdaq, 2,209 issues rose and 638 fell.
The S&P 500 showed one new 52-week high and one new low, while the Nasdaq recorded 19 new highs and 49 new lows.
About 9.9 billion shares traded on US exchanges and the 15-day moving average of 8.1 billion was the highest this year, according to Thomson Reuters data.