Because of the big rally in junk and other distressed bonds, corporate issues are trading at higher prices, which means you get less yield and more risk.

垃圾债券大幅度升值，其他减值债券，公司票据都在高位交易，这就意味着你的收益在减少，而风险在增加。

youdao

Junk-bond trader Michael Milken was indicted in an insider-trading investigation but pleaded guilty to other charges.

WSJ: Gupta Found Guilty of Insider Trading

There must be a lot of investors--or credit speculators--who are cavalier about corporate defaults because junk bonds are trading at yields only modestly higher than the yields on safe U.S. Treasury bonds.

FORBES: A Dangerous Game

GSE-backed securities above the levels where even junk bonds were trading before the crisis.

ECONOMIST: Reining in Fannie Mae and Freddie Mac