Participants were also asked to predict the Dow Jones Index over the course of a week.
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Indeed, the Dow Jones index has outpaced the gold price by 25% since last summer.
The US Dow Jones index closed down 2.1%, and German and French indexes fell more than 3%.
Wall Street shares plunge, with the Dow Jones index slumping 7% or 770 points, a record one-day point fall.
The pledge helped boost stock markets on Monday, with Wall Street's Dow Jones index rising 3%, albeit on low volumes.
The Dow Jones index was also up 0.4%, with a rise of 52 points taking it to a record 14, 578.
The Dow Jones index of leading shares closed 0.4% higher at 9, 576, while the technology-oriented Nasdaq settled up 1.5% at 1, 902.
In New York, the Dow Jones index jumped above the 15, 000 level for the first time in history before slipping back slightly.
Investors appeared to welcome the latest data, with the Dow Jones index of leading US shares rising 106.2 points to close at 14, 818.75.
Its more staid rival, the Dow Jones index, closed 0.75 lower on the day to 10, 786.85 and about 6.2% lower on the year.
On Wall Street, the Dow Jones index lost 108.13 points on Wednesday, and shed a further 46.92 points on Thursday to close at 13, 880.62.
Much of that decline is attributable to the economy, not the war: the Dow Jones Index is down, joblessness is up and national income is flat.
The Dow Jones Index, which stood at 381 in early September 1929, lost half of its value in the two months after the Great Crash of October.
The Dow Jones index fared only slightly better on Friday as it briefly shed as much as 200 points, ending trading with a 150 points loss at 10, 626.
True, the U.S. got a jolt in late October when a sharp fall in the Hong Kong stock market sparked a big plunge in the Dow Jones index.
In brief, the theory posits that when the Dow Jones Transportation Index diverges from the Dow Jones Industrial Index, it is a negative sign for future stock market returns.
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The iShares Dow Jones Transportation Index ( IYT) is up 28.3% since the November 16 low, but the Dow Jones Airlines Index ( DJUSAR) is up a whopping 57.4%.
Following a buoyant start to the year, many stock indexes around the world are near multi-year highs and the Dow Jones index is not far off its all-time record.
Now that Tiger Woods is sidelined, the leftover golfers from the old United States ... well, if they were companies, they'd be the ones dragging down the Dow Jones index right now.
The Dow Jones index of leading US shares gained 2.9% to close up 255.26 points at 8, 931.68 while the technology weighted Nasdaq index rose 3%, or 43.51 points, to close at 1, 487.94.
That would take the shine off the Dow Jones index, which has risen 25% in the past year, and convince many American fund managers to exit Asia for safer returns in deposit-bearing investments at home.
Wall Street has lost more than a fifth of its value in the past 10 trading days and is heading for one of its biggest weekly falls since the Dow Jones index was created 112 years ago.
Dr. Bollen and his colleagues, for example, found that the millions of Twitter messages sent via mobile phones and computers every day captured swings in national mood that presaged changes in the Dow Jones index up to six days in advance with 87.6% accuracy.
The Dow Jones Commodity Index, for instance, was down almost 10% through the end of November.
The Dow Jones Chemical Index reveals that it overcame major resistance, line f, in early 2013.
The Dow Jones Trucking Index ( DJUSTK) has been weakest as it is up only 14.2%.
Compare that to the Dow Jones Germany Index, which is down about 2% year-to-date.
Over the last year, the Dow Jones Utility Index has lost 30% of its value.
The Dow Jones Industrial index gained 0.6% to 13, 896 while the Nasdaq rose 0.6% to 3, 150 points.
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The Dow Jones share index gained 1% in New York, regaining some of its hefty losses from Wednesday.
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