NYSE Margin Debt And The Market

 | Jul 26, 2016 12:30AM ET

Note: The NYSE has released new data for margin debt, now available through June. We've updated the charts in this commentary to include the latest numbers.

The New York Stock Exchange publishes end-of-month data for margin debt on the NYX data website , where we can also find historical data back to 1959. Let's examine the numbers and study the relationship between margin debt and the market, using the S&P 500 as the surrogate for the latter.

The first chart shows the two series in real terms — adjusted for inflation to today's dollar using the Consumer Price Index as the deflator. At the 1995 start date, we were well into the Boomer Bull Market that began in 1982 and approaching the start of the Tech Bubble that shaped investor sentiment during the second half of the decade.

The astonishing surge in leverage in late 1999 peaked in March 2000, the same month that the S&P 500 hit its all-time daily high, although the highest monthly close for that year was five months later in August. A similar surge began in 2006, peaking in July 2007, three months before the market peak.

Debt hit a trough in February 2009, a month before the March market bottom. It then began another major cycle of increase.

The Latest Margin Data

The NYSE margin debt data is a few weeks old when it is published. The NYSE margin debt data is a few weeks old when it is published. The latest debt level is down 0.8% month-over-month, the second consecutive month of decline, but it is still off its interim low set in February.

This metric is well below its record high set 14 months ago in April of last year. Here is an overlay of margin debt and the S&P 500 adjusted for inflation. In real terms as we write the, the S&P 500 has been setting record highs.