The four-day rout in junk-rated bonds has left half the market unscathed, even as it frayed the nerves of investors concerned about the froth in corporate debt.

Saudi Arabia’s market regulator has frozen the trading accounts of individuals being detained or investigated as part of the kingdom’s crackdown on alleged corruption, according to three people familiar with the matter.

Greece’s successive bailouts have only met their objectives to a limited extent as economic growth remains weak, debt has increased and banks’ ability to lend is still restricted, according to a report by the European Union’s auditors.

China’s sovereign bond selloff escalated Tuesday, with the 10-year yield topping 4 percent for the first time in three years. The breach is likely to sour sentiment further and lead to more losses, at least until the Chinese authorities step in, analysts said.

Moody’s Investors Service’s decision to boost India’s sovereign rating is a step forward for the developing nation, but the reaction in assets may be more “knee-jerk” than long-lived, according to investors.

As the stock selloff extended in Asia on Wednesday, one top money manager was anything but concerned.