Event:
Chinese e-commerce company Alibaba begins trading on the New York Stock Exchange; its pre-IPO market valuation of almost $168 billion exceeds that of American e-commerce giant Amazon by over $17 billion
More Notable Events on September 18:
1997 Ted Turner gives $1 billion to the United Nations
1990 500 pound Hershey Kiss is displayed in Times Square
1987 U.S. and Russia sign accord to remove mid range missiles
1851 New York Times starts publishing at 2 cents a copy
1793 President Washington lays cornerstone of Capitol building
