A recent Wall Street Journal article mentions Julio Urvina, who claims prefect results with it: http://blogs.wsj.com/atwork/2012/08/16/can-a-ceo’s-success-be-foretold-consult-the-oracle/
There is also this article: http://www.techinasia.com/managing-investing-chinas-ancient-iching-275/
While I am generally skeptical about methods that “never” fail (why is an investment advisor selling $3 ebooks if he has never been wrong in 40 years?), his book contains useful examples of how you can use I Ching for investment purposes.
Amazon offers a free “Look Inside” on his book:
While I do not use the I Ching for my own market predictions, my Four Pillars Finance software program has always contained a “Financial I Ching” program, which is perfectly suited to experiment with Julio’s approach.
You can download it here: http://www.fourpillars.net/finance/fpf.php