Margin Debt

According to a May 2013 WSJ article, the total amount of NYSE margin debt at the end of March 2013 was 2.7% of the total market capitalization of the S&P 500. At its previous peak, investors had borrowed as much as 2.9% of the S&P 500; at its crisis low, investors were borrowing 2.3% of the S&P 500’s market value.