Yahoo Finance's LIVE stock market coverage and analysis. Reports on the imminent demise of the eight-year equity bull market have been greatly exaggerated, at least according to a century-old indicator.

Alibaba's BABA executive chairman Jack Ma is never short of big ideas. Ma chose chose Detroit, Michigan over New York, Las Vegas and Los Angeles to host its biggest conference ever in the U.

The conference is called Gateway '17 and is teaching entrepreneurs, small businesses and farmers about the Chinese economy and about how they can grow their businesses by selling on Alibaba's platforms.

Here are some of Ma's biggest quotes from his keynote address on Tuesday evening.

One standout was Ma saying Alibaba will so sell so much stuff by the year , it will generate the equivalent in GDP to be the fifth largest economy. Ma also said he was preparing for retirement.

The testing program successfully combined predictive software and display technology into business jet cockpits, and showed how pilots can see where, and how, sonic booms would impact the population on the ground. This represents a fundamental discovery as sonic booms present one of the primary barriers to adopting supersonic flight more broadly.

Sonic booms, caused by aircraft traveling faster than the speed of sound, can prove to be a significant annoyance as its effects on humans include disturbance of ongoing activities and interference with sleep. Markets close in 3 hrs 54 mins. Stocks to Watch Target hit with a downgrade, Sears sinks, FedEx up on beat.

Midday Movers Yahoo Finance's LIVE stock market coverage and analysis.

Click to view reactions. In 30 years people will work 'four hours a day and maybe four days a week'.

New technology 'may cause the Third World War'. Recently Viewed Your list is empty.

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Pogue sits down with the inventor of the cell phone. Sign-in to view your list and add symbols.

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