Key China share index produces biggest one-day rise in 2-1/2 yrs
* CSI300 index +4.9 pct, SSEC +4.7 pct
* Investors unfazed by wave of coming IPOs
* Recent rout 'creates opportunities' - analyst (Recasts top, adds Hong Kong performance)
By Samuel Shen and Pete Sweeney
SHANGHAI, June 1 (Reuters) - China stocks jumped nearly 5 percent on Monday, regaining most of the ground lost in Thursday's sell-off, as investors sitting on growing piles of cash took advantage of that tumble to swoop on shares as a chorus of official media commentary asserted the bull market is not over yet.
Most investors interpreted fresh official economic surveys as reinforcing expectations for more government stimulus, and were undeterred by a new wave of initial public offerings (IPOs) this week.
The largest of the IPOs is for China National Nuclear Power Co, which aims to raise $2.13 billion.
"The pattern in a bull market is that immediately after a plunge, money will pile in, pushing the market higher," said Wang Yu, analyst at Pacific Securities Co in Beijing.
"To many investors, the rout last week means a huge reduction in market risks, creating buying opportunities," he said. Continuación...