Our dark pool crossed over 79 million shares* per day, a 23% increase over/from October 2010.

Below are some monthly highlights:

OCTOBER 2011 TRADING HIGHLIGHTS
Average daily volume*	79.7 million shares
Q4 average daily volume*	79.7 million shares
Average inflows/day	8.3 billion shares
Average price improvement	$0.007/share
Average block** size	23,583 shares
Block orders as % of total volume	64%

*Figures include all volume traded on the BIDS ATS and do not include any routed volume. Shares are double counted to include both sides of the transaction.
**A block is defined as 10,000+ shares.

We would like to thank our users for our continued growth! As always, please feel free to contact us with questions or concerns.

Best regards,

Marybeth Shay
Senior Managing Director
Sales and Marketing

BIDS Trading | 111 Broadway, Suite 1603 | New York, NY 10006
T: 212.618.2601 | F: 212.618.2031 | E: marybeth.shay@bidstrading.com