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Procter & Gamble's big deal, Powerball odds and NYSE day 2

U.S. stocks (^DJI, ^GSPC, ^IXIC) are on the rise today, bouncing back from yesterday's slide, at least a little bit, as China rebounds on the other side of the world.

Here are some of the other stories Yahoo Finance is keeping an eye on today.

NYSE: The day after
Yesterday's trading halt on the New York Stock Exchange lasted more than three and a half hours but didn't seem impact the market much at all. So just what happened to cause the delay and why did it matter?

Keith Bliss of Cuttone & Co. explained why the New York Stock Exchange is so important, especially when it comes to the 4:00pm close. He said the NYSE "is the primary market for over 4,000 issues, and as such, the NYSE is the ultimate price for each of those issues. Traders and investors need to know on a nightly basis the closing mark for their holdings to calculate P&L, set the benchmark price...and help in evaluating strategy."

Procter and Gamble's big deal
Consumer product giant Procter and Gamble (PG) is about to bring in a cool $12.5 billion. The Cincinnati-based company is selling off their 43 beauty brands to fragrance and cosmetic company Coty (COTY) and shareholders may be making out quite well in the deal.

Billion dollar Powerball
The U.S. may soon get its first ever one billion dollar Powerball jackpot, according to new analysis by website FiveThirtyEight.com. That's because the New York State Lottery Commissioners approved tweaks to the Powerball jackpot odds...it's now more difficult to win the big prize. But the odds of winning $4? That will improve from 1 in 111 to 1 in 92. The new rules will take effect for the October 7 drawing.