Activision Blizzard may see its share price increase as much as 50 percent as it prepares to launch the Mists of Pandaria expansion for World of Warcraft and Call of Duty Online in China, financial newsweekly Barron's reports. Activision Blizzard is currently trading at $11.25, after reporting Q2 earnings above expectations but below the previous year, bringing in $1.08 million.Investors expect shares could reach a high of $17 due to Mists of Pandaria's launch in September and Activision's partnership with Chinese Internet provider Tencent Holdings to launch the free-to-play game Call of Duty Online, potentially in "mid-2013," Barron's says. The Chinese gaming market generated $7 billion and included 160 million gamers in 2011, and is expected to grow by 20 percent this year to cash in more than $9 million in 2014.Activision Blizzard's shares have fallen 10 percent this year, while the broad market has gained 11 percent. Parent company Vivendi was looking to sell its 61 percent stake in Activision Blizzard earlier this year, but it appears those efforts have shifted focus.