"The Dramatic Expansion of Corporate Bonds"

From Conversable Economist:

Overall world debt in the last year or two is at its all-time high as a share of world GDP. But there is common pattern that as countries grow and their financial markets develop, their level of debt also tends to rise. Perhaps even more interesting is that the importance of the components of that debt have been shifting. During and after the Great Recession, government borrowing was the main driver of rising global debt. But corporate borrowing has become more important

Moreover, this corporate borrowing has two new traits. One is that as bank regulators all over the globe have tightened up, this rise in corporate borrowing tends to take the form of bonds rather than bank loans. The other interesting trait is that this rise in corporate borrowing around the world can be traced back to developing economies--and especially to China.

Susan Lund, Jonathan Woetzel, Eckart Windhagen, Richard Dobbs, and Diana Goldshtein of the McKinsey Global Institute provide an overview in their June 2018 discussion paper, Rising Corporate Debt: Peril or Promise?  An overview of the report is here; the full report is here. They write:

"In a departure from the past, most of the growth in corporate debt has come from developing countries, in particular China. Companies in advanced economies accounted for just 34 percent or $9.9 trillion of the growth in global corporate debt since 2007, while developing countries accounted for 66 percent or $19.2 trillion. Since 2007, China’s corporate debt has increased by $15 trillion, or more than half of global corporate debt growth. As a share of GDP, China’s corporate debt rose from 97 percent of GDP in 2007 to 163 percent in 2017, one of the highest corporate debt ratios in the world apart from small financial centers that attract offshore companies. The growth in corporate debt in China is mainly associated with a construction sector that increased its leverage as the housing market boomed. Today, 30 to 35 percent of corporate debt in China is associated with construction and real estate. ...

"A relatively new feature of the debt landscape in recent years has been a shift in corporate borrowing from loans to bonds. Given the growing pressure on banks to meet new capital and liquidity standards, global nonfinancial corporate loans outstanding have been growing by only 3 percent annually on average since 2007 to stand at around $55 trillion in 2017. However, the share of global corporate debt in the form of bonds has nearly doubled, and the value of corporate bonds outstanding has grown 2.7 times since 2007. This is a positive trend, leading to a diversification of corporate financing. However, we also find risks." 

Here are a couple of summary figures for nonfinancial corporate debt by country. The countries are ranked by total corporate debt as a share of GDP...

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