Summary
The money borrowed to buy shares, known as buying on margin, or margin debt, can be expected to peak with the market. We can see that margin debt in the US last peaked in March of 2000 at $278.5 billion. The Dow peaked in the January of that year, the NASDAQ in the March. We can expect margin debt to again peak in similar fashion with the market in the future, whenever that may be. (But can be exp