After a 5 day tumbling streak, which saw Chinese stock plunge well over 20% and 17% in just the first three days of this week, overnight the Shanghai Composite was hanging by a thread (and threat) until the last hour of trading. In fact, this is what the SHCOMP looked like until the very end: Up 2.6%, up 1.2%, up 2.8%, up 0.6%, up 2%... down 0.2%. And then the cavalry came in: "Heavyweight stocks like banks and insurance companies helped pull up the index, and it’s possibly China Securities Finance entering the market again to shore up stocks," Central China Sec. strategist Zhang Gang told Bloomberg by phone. Net result: the Composite, having been red just shortly before the close, soared higher by 156 points or 5.4%, showing the US stock market just how it's down.