The Montreal Pledge was launched in September 2014; pension and investments fund managers from around the world who are signatories to the Pledge, including Canada, have agreed to measure, disclose, and reduce the carbon footprint of their investments, yet the Canada Pension Plan Investment Board (CPPIB) has failed to disclose to the public if they are meeting their commitment to the Pledge. 

The Pledge is supported by the Principles for Responsible Investment (PRI) and the United Nations Environment Programme Finance Initiative (UNEP FI). Overseen by the PRI, it has attracted commitment from over 120 investors with over $10 trillion (US) in assets under management, as of the United Nations Climate Change Conference (COP21) in December 2015, in Paris.

Support for the Montreal Carbon Pledge comes from investors across Europe, the USA, Canada, Australia, Japan, Singapore and South Africa. CDC Quebec is one of many Canadian signatories.

The Pledge allow investors (asset owners and investment managers) to formalize their commitment to the goals of the Portfolio Decarbonization Coalition. Over $100 billion (US) has been committed to this at COP21.