Raven, a six-year-old chimpanzee, became the 22nd most successful money manager in the USA after choosing her stocks by throwing darts at a list of 133 internet companies. The chimp created her own index, dubbed MonkeyDex, and in 1999 delivered a 213 per cent gain, outperforming more than 6,000 professional brokers on Wall Street.
More here – Guinness Book of World Records