Alibaba at a Quarter of a Trillion? Bargain or Bubble?

After its first day of trading, Alibaba was valued at $231 billion. Here is how it compares to some notable American companies.

	Market Cap ($B)	Relative to ALIBABA
Apple	604.54	2.6
Exxon	414.19	1.8
Google	403.18	1.7
Microsoft	391.56	1.7
JnJ	304.56	1.3
GE	263.79	1.1
Wal-Mart	247.62	1.1
Chevron	236.99	1.0
Alibaba	231.44	1.0
P&G	228.72	1.0
IBM	193.53	0.8
AT&T	183.95	0.8
GM	54.46	0.2
Yahoo	40.71	0.2

IBM's Watson has learned to play chess better than any other person. It's now learning how to diagnosis illness. That, it seems to me, has some potential. Oh, and IBM has lead the world in the number of patents for years now so Watson is by no means it's only play. And Alibaba is worth twenty percent more than IBM? Either IBM is under-valued or Alibaba is overvalued.