starting this week and thru end of June, TSX is upgrading its platform for all* Canadian protected markets.
http://www.tmx.com/en/pdf/trading/QuantumXA_FAQ.pdf
expect HFT and broker games.
GLTA,
R.
* - not sure whether this impacts as harshly those who's brokers can immediately route away, or get punched by dark fills instead of hitting the lit order stream (eg, via AutoJitney SOR, in-house prop, etc.)