China stocks fall on margin tightening, IPO wave, weigh on Hong Kong
* CSI300 -1.6 pct; SSEC -1.4 pct; HSI -1.5 pct
* More brokerages tighten margin financing
* China market braces for new wave of IPOs
By Samuel Shen and Pete Sweeney
SHANGHAI, May 28 (Reuters) - China stocks fell on Thursday as a growing number of brokerages tightened requirements on margin financing - an important engine behind a red-hot rally that has made Chinese share markets the best performers in the world.
The fall was also triggered by some profit-taking ahead of a new flood of initial public offerings (IPO) next week, which some analysts estimate could freeze up around 5 trillion yuan ($807 billion) of liquidity.
The CSI300 index fell 1.6 percent to 5,096.85 points by the end of the morning session, while the Shanghai Composite Index lost 1.4 percent.
The losses weighed on Hong Kong, where the Hang Seng index dropped 1.5 percent to 27,656.68 and the Hong Kong China Enterprises Index lost 2.2 percent.
On Thursday, at least three Chinese brokerages, including Guosen Securities Co, Southwest Securities Co and Changjiang Securities Co tightened margin financing rules to tame risks in the market, which has surged over 140 percent over the last 12 months, fueled in large part by a record amount of borrowed money. Continuación...