Academic access to Thomson Reuters Tick History:
www.sirca.org.au
The Thomson Reuters Tick History database provides millisecond-timestamped tick data going back to January 1996, covering 45 million OTC and exchange-traded instruments worldwide. The database currently updates at a rate of 1 million messages per second and is around 3 Petabytes uncompressed. It is a comprehensive, accurate and precise historical record of market behaviour. Includes API and MATLAB API access. Contact Sirca for more information.
For updates on the data offering check: Dinkum Data