The Canadian Securities Administrators (CSA) and the Investment Industry Regulatory Organization of Canada (IIROC) are implementing a new regulatory framework for the use of orders entered without pre-trade transparency, referred to as dark orders.

To implement the new structure, amendments have been made to National Instrument 21-101 Marketplace Operation and to the Universal Market Integrity Rules (UMIR), approved by the CSA on March 30. The framework is comprised of the following key elements:

Visible order priority –Visible orders will have execution priority over dark orders on the same marketplace at the same price;

Meaningful price improvement – In order to trade with a dark order, smaller orders must receive a minimum level of price improvement, which is defined as one trading increment or half a trading increment for securities with a bid-ask spread of one trading increment; and

Minimum size – IIROC has the ability to designate a minimum size for dark orders. It is not doing so at this time, but the CSA and IIROC will monitor market developments closely to consider whether and when IIROC should implement a minimum size.

Effective October 10, 2012, the UMIR provisions will introduce a comprehensive and proactive regulatory approach to safeguard the price discovery process in Canadian equity markets.

“The Canadian capital markets are developing rapidly and it’s incumbent on regulators to set high standards to ensure these changes are in the best interests of investors and the markets,” says Bill Rice, chair of the CSA. “This new regulatory framework will allow for continued innovation while maintaining fair and efficient capital markets.”

“The framework recognizes the increasing use of dark liquidity and balances displayed and dark liquidity for healthy price discovery,” added Susan Wolburgh Jenah, IIROC president and CEO.

Related: Anonymous trader: a look into dark pools

The initiative follows extensive consultations with industry and stakeholders that began in 2009, which included a 2009 Consultation Paper, a joint CSA/IIROC forum in the spring of 2010 and last November’s Position Paper. The Position Paper recommended that “meaningful price improvement” be required in certain circumstances and that visible orders should be executed before dark orders at the same price on the same marketplace.

The new framework permits IIROC to establish a minimum size threshold for dark orders, and the rules will enable institutional traders to execute large orders with minimal market impact, while ensuring that investors with smaller orders receive meaningful price improvement when they trade with dark orders.