HY Bonds vs IG Bonds (ETFs)

HYG tracks the Markit iBoxx USD Liquid High Yield Index, holding approximately 1,200 high-yield corporate bonds with at least $400 million in outstanding face value. Credit ratings span BB (higher quality junk) through CCC and below, with average rating of roughly B+. Duration is approximately 3-4 years, shorter than LQD because high-yield bonds typically have shorter maturities. Current 30-day SEC yield is approximately 6.7 percent. Expense ratio 0.49 percent.

LQD tracks the Markit iBoxx USD Liquid Investment Grade Index, holding approximately 2,600 investment-grade corporate bonds. Credit ratings span AAA through BBB, with average rating of roughly A-. Duration is approximately 8-9 years, longer than HYG because investment-grade issuers access the full maturity spectrum including 30-year bonds. Current 30-day SEC yield is approximately 5.2 percent. Expense ratio 0.14 percent. The yield difference between HYG and LQD (approximately 150 basis points) is compensation for credit risk plus a component for the shorter duration in HYG.

High-yield corporate bonds trade at a spread over Treasuries that compensates investors for default risk, liquidity risk, and any embedded options. The ICE BofA US High Yield Master II Option-Adjusted Spread (BAMLH0A0HYM2, a commonly tracked index) measures this compensation across roughly 1,800 bonds, averaging near 450 basis points historically and ranging from roughly 275 bps in calm markets to over 1,000 bps in crises.

Investment-grade spreads (BAMLC0A0CM) run a tighter range, averaging near 130 basis points and ranging from 70 bps tight to 625 bps (the 2008 peak). HYG minus LQD spread, or equivalently HY OAS minus IG OAS, compresses to near 180 bps in stable bull markets and expands to over 900 bps in acute crises. When the spread is compressing rapidly, investors are reaching for yield and credit risk is being under-priced. When the spread is widening, investors are rotating up in quality, which historically has been an early warning of equity drawdowns.

HYG and LQD respond differently to interest-rate moves because of their different durations. LQD's roughly 8-year duration means a 100 basis point rise in Treasury yields reduces LQD's NAV by approximately 8 percent if credit spreads are unchanged. HYG's roughly 4-year duration produces approximately 4 percent NAV decline for the same rate move.

This creates a nuance when interpreting the HYG-LQD spread. In a rising-rate environment without credit stress (2022 is the textbook example), LQD falls more than HYG simply because of duration math, which makes the HYG-LQD spread compress even though credit risk has not decreased. In a credit-stress environment with falling rates (classic flight-to-quality), LQD rises more than HYG because of duration tailwind, which widens the spread even before credit deterioration is fully priced. Cleaner measures of pure credit risk use option-adjusted spreads directly rather than HYG/LQD price ratios.

The 2008 financial crisis produced the widest credit spreads on record. The ICE BofA US High Yield OAS peaked at approximately 2,182 basis points in December 2008, and IG OAS peaked at approximately 625 basis points the same month, both remaining all-time highs since the daily index history began in 1996. HYG itself fell roughly 25 percent peak to trough from mid-2008 to early 2009 despite coupon income offsetting some price losses. LQD fell roughly 15 percent over the same window.

Recovery was gradual. HY spreads took over 18 months to return to sub-500 basis points, and they did not return to pre-crisis tight levels until 2013. The 2008 episode establishes the upper bound of credit spread moves: any combination of events that pushes HY OAS toward 1,500-2,000 bps would imply a crisis of that magnitude. The 2016 energy-sector stress (HY OAS hit 887 bps in February 2016) and the 2020 COVID spike (1,087 bps) are the only other post-2008 episodes that approached 1,000 bps.

The COVID crash produced the fastest credit spread widening in history. HY OAS went from 360 basis points on December 31, 2019 to 1,087 basis points on March 23, 2020, a widening of over 700 basis points in less than three months. IG OAS widened from roughly 95 bps to 400 bps over the same window. HYG fell approximately 22 percent and LQD fell approximately 13 percent from February 19 peak to March 23 trough.

The Federal Reserve's March 23, 2020 announcement of the Primary Market and Secondary Market Corporate Credit Facilities (PMCCF and SMCCF) including direct purchases of investment-grade corporate bonds and select high-yield ETFs was the specific trigger for the spread reversal. Spreads had already started compressing as the announcement was leaked. HYG recovered its losses by early August 2020 and reached new highs by early 2021. The episode demonstrated how central bank intervention can dominate fundamental credit analysis in extreme moments.

The 2022 Fed tightening cycle widened credit spreads but much less than earlier crises. HY OAS went from approximately 310 basis points at the start of 2022 to a peak near 600 basis points in July 2022, well below the 2008 or 2020 extremes. IG OAS peaked near 170 basis points.

What drove HYG and LQD underperformance in 2022 was primarily rates, not credit. LQD fell approximately 20 percent for the year while HYG fell approximately 11 percent. The duration differential explains most of the relative move: LQD's longer duration made it more sensitive to the 2-year yield move from 0.7 percent to 4.4 percent. HYG outperformed LQD on price even though credit spreads widened modestly, because the shorter-duration shield mattered more than the credit hit. This is the opposite of what HYG vs LQD outperformance typically means, which is why interpreting 2022 requires separating duration from credit components carefully.

March 2023 saw the collapse of Silicon Valley Bank (March 10), Signature Bank (March 12), and First Republic Bank (May 1). HY credit spreads widened from approximately 400 bps in early March to 520 bps by mid-March. IG spreads widened less, from about 130 to 160 bps. HYG fell roughly 3 percent, LQD fell roughly 2 percent from peak to trough of the episode.

The Fed's Bank Term Funding Program (March 12, 2023) and FDIC emergency actions stabilized the situation within days. HY spreads had returned to pre-SVB levels by May 2023. The episode is notable because it was sector-specific (financials) rather than broad credit stress, and HYG's diversified structure (financials are one of several sectors) limited the damage compared to a pure regional bank ETF like KRE, which fell approximately 40 percent in the same window.

The historical default rate on US high-yield bonds has averaged approximately 3.5 to 4 percent annually over the 1990-2024 period, with a long-run range from below 1 percent (2007 peak cycle) to over 12 percent (2009 recession). Default rates are the ultimate driver of HY underperformance: if an HYG bond defaults, recoveries average roughly 40 to 50 percent of face value, so a 5 percent default rate with 40 percent recovery implies an expected annual loss of 3 percent that must be compensated by the HY spread.

As of early 2026, trailing-twelve-month US HY default rates are approximately 1.8 percent per Moody's, well below the historical average. Tight credit spreads (262 bps current HYG OAS) reflect this benign default environment. Forward-looking default rates depend on economic conditions: Moody's baseline forecast sees 2026 defaults holding near 2 percent absent a recession, but a moderate recession could push the rate toward 4-5 percent within 12 months.

For tactical allocation, the HYG-LQD spread reading relative to its 5-year range is a useful signal. Current spreads in the bottom quintile of the 5-year range (as of April 2026) historically have been poor entry points for adding HY risk. Spreads in the top quintile historically have been good entry points because mean reversion from stressed levels has been reliable over 12 to 24-month horizons.

For strategic allocation, the choice between HYG and LQD depends on the credit-cycle view. Early-cycle environments (post-recession recovery) favor HYG as spreads tighten and recoveries exceed expectations. Late-cycle environments favor LQD for the higher credit quality and flight-to-quality benefits when stress emerges. Mid-cycle environments are more neutral and favor a balanced allocation. The 2025-2026 environment has been late-cycle by most traditional measures, but spreads have continued tightening and HYG has continued outperforming, reflecting persistent risk appetite that late-cycle positioning would have missed.

The primary signal is whether HY spreads can stay below 300 basis points or whether 2026 geopolitical stress (Iran, Hormuz, inflation from oil prices) forces a renewed widening. A sustained move above 400 basis points would mark the first meaningful credit-stress episode since early 2023 and would warrant defensive positioning. A sustained move below 250 basis points would be the tightest environment since 2007 and would indicate extreme risk appetite that historically has preceded credit cycle turns.

Secondary signals to watch include LQD issuance patterns (heavy new issuance often precedes spread widening), HY bond downgrades to distressed ratings (CCC and below), and the relationship between HY spreads and equity volatility (VIX). The current VIX near 18-19 with HY OAS at 262 bps is consistent with the normal equity-credit relationship. A divergence where VIX rises sharply but HY spreads stay tight would indicate credit markets are missing a signal that equity markets are pricing, a historically unusual and unsustainable configuration.