What is SLR and how is it calculated?

Since the 2008 financial crisis, global regulators and politicians have embarked on a vast overhaul of the derivatives markets in a bid to reduce systemic risk. Limits on leverage, through the supplementary leverage ratio (SLR), are the heart of the reforms, and market participants are experiencing its profoundly disruptive effects. Beth Shah reports on what SLR is and why it matters.