A new perspective on risk? Read more about the entropy of prices.

Also, following recent research on the speed of financial markets, should the HKEx adopt periodic auctions?

Other articles: is being renovated. Technology has moved a long way since this site was built over 10 years ago and now, with HTML5, much more can be done with much less. You can visit the previous site content through the old home page. Be aware interactive content that relied on Java is unlikely to be working but the tutorials on building trading systems with kdb+/q are still there.