Fluctuations in credit spreads serve as an indicator of investor sentiment and capital flows in the corporate bond market. “Credit Signal” provides an intuitive analysis of the market’s overall trends and context, focusing on weekly changes in credit spreads. <Editor’s Note>

[Edaily Marketin Reporter LEE GEON-EOM ] While benchmark interest rates, which fluctuated wildly in late July after hitting a new annual high, have shown signs of stabilizing somewhat in August, investor sentiment in the credit market remains frozen solid. Although macroeconomic interest rate uncertainty has subsided, the yield spread between government bonds and corporate bonds continues to widen.

According to the Bond Information Center of the Korea Financial Investment Association on the 16th, the spread on 3-year AA- rated corporate bonds stood at 70.7 basis points (1 bp = 0.01 percentage point) as of the 13th. This represents a significant widening compared to the 62.5 bp level recorded on June 12. The spread on 3-year BBB- corporate bonds—which are non-investment-grade—also widened from 644.5 bp to 651.2 bp during the same period.

A credit spread refers to the difference between the yield on government bonds—which are considered safe assets—and the yield on corporate bonds issued by individual companies. Since companies face a higher risk of default than the government, they must pay higher interest rates to raise funds; this difference is the spread. In other words, a widening spread indicates that investors are assessing corporate risk as higher and are becoming more cautious, meaning the funding environment for companies has become correspondingly more challenging.

Looking at the details, the spread in the high-grade corporate bond market has been widening since the beginning of the year, despite liquidity injections such as the inflow of semiconductor funds triggered by SK Hynix. Analysts attribute this to a combination of a flight to safety amid macroeconomic uncertainty and profit-taking by institutional investors.

In fact, as of the 13th of this month, the yield on 3-year government bonds had plummeted by 17.8 basis points from its peak on the 24th of last month, while the yield on high-grade AA- 3-year corporate bonds fell by only 16.5 basis points. The explanation is that as the shift toward safe-haven government bonds intensified—causing their yields to fall sharply first—corporate bond yields were unable to keep pace with that decline, resulting in a widening spread.

Furthermore, as absolute yields peaked and began to decline, institutional investors—who had heavily purchased high-quality bonds during the first half of the year, lured by high yields—began preemptively taking profits and flooding the market with sell orders. This also acted as a factor weighing on corporate bond yields (widening the spread). Even major positive catalysts have been unable to overcome these market supply-and-demand pressures and structural caution.

A key variable is the Bank of Korea’s Monetary Policy Committee meeting scheduled for the 27th. Citigroup raised the possibility that the Bank of Korea will not only raise the benchmark interest rate by 0.25 percentage points from 2.75% to 3.00% this month but will also implement an additional hike in October. The bank forecasts that the terminal rate will reach the 3.50–3.75% range, higher than previously expected. There is speculation that if the flight to safety—which recently drove down Treasury bond yields—is reversed by hawkish signals from monetary authorities, it could serve as a new variable in the trend toward widening spreads.

The decline in investor sentiment in the non-investment-grade bond market is even more severe. The aftermath of a series of recent credit events has been fully reflected in the market. The loss of the benefit of time (EOD) crisis at JR Global REIT and a string of financial issues at companies on the fringes of investment-grade status—such as Joongang Group—or those rated below investment grade have hit the entire market hard.

In contrast, the commercial paper (CP) market—which companies are turning to as an alternative to corporate bond issuance—is showing resilience. In fact, while the yield on 91-day CPs has crept up from the 3.12–3.13% range in early to mid-June to 3.15% as of August 13, showing downward rigidity, it is still considered far more favorable in terms of funding costs compared to long-term corporate bond yields, which currently stand about 130 basis points higher.

A corporate bond market official stated, “Although macroeconomic indicators have stabilized, market participants perceive the situation differently,” adding, “Following a series of financial issues stemming from JR Global REIT and the Joongang Group, standards for credit quality have risen a notch, which is why the spread is not narrowing easily.”