Corporate bond market may become even less liquid when Volcker Rule is fully in effect next July.

Corporate bond market may become even less liquid when Volcker Rule is fully in effect next July.

Credit swaps tied to specific companies almost doubled over 2013; boom is unintended consequence of new curbs on Wall Street.

Credit swaps tied to specific companies almost doubled over 2013; boom is unintended consequence of new curbs on Wall Street.

Investors binge on investment-grade company debt; analysts worry about ripple effects of quantitative easing on this market.

Investors binge on investment-grade company debt; analysts worry about ripple effects of quantitative easing on this market.

Although longer-term U.S. debt has gained 14 percent this year, money continues to pour into ETFs based on longer-term Treasuries.

Although longer-term U.S. debt has gained 14 percent this year, money continues to pour into ETFs based on longer-term Treasuries.