"As flies to wanton boys are we to the gods. They kill us for their sport."
William Shakespeare, King Lear
Wall Street puffed up the stock market indices to get the 'largest ever' IPO of Alibaba out the door.
Just in case you still had any illusions about these being 'free markets,' as if such a thing can even exist without the hard work of honest and objective referees.
After they took that piggy to market, the underwriters and the market manager (GS) let the markets go their own way.
Home again, home again, jiggety jog.