– This is the script of CNBC's news report for China's CCTV on August 11, Thursday.
Welcome to CNBC Business Daily, I'm Qian Chen.
Not all eyes are on the scoreboards of the 2016 Olympic Games in Brazil.
As athletes across the globe are competing for an Olympic medal in Rio, investors watch closely out how advertising during the Olympics affects the stock market.
Surely, the Olympics Games event is an advertising feast for global sports companies to promote their brands -- from TV to social media.
Here are a few companies in the spotlight.
First of all, Nike remains a sporting industry giant, but has its stock price down more than 10% year-to-date -- that makes it the worst performing stock in the Dow for 2016, a title it recently inherited from Goldman Sachs.
Nike's most recent quarterly sales and future orders are both disappointing.
Now, Nike is an official sponsor, and the brand will get a lot of exposure over the next few weeks -- from athletes wearing its apparel and all the Nike commercials airing on TV and its family of networks during the games.
But so far, the "Olympics effect" has had little boost to the company's share price though - up by a littie bit after the Olympics opening and began to slide again yesterday.
Meanwhile, Nike is facing a tough challenge from resurgent rival Adidas as well as Under Armour.
YTD stock price for Adidas has nearly surged by 70%.
Some Chinese sports brands are in spotlight as well, including Li Ning and Xtep, with shares YTD down 1.7% and up 2% respectively.
CNBC's Qian Chen, reporting from Singapore.