Credit

Credit is debt issued by non-government borrowers, with default risk pricing the spread above comparable Treasuries. The investment-grade complex (BBB- and above) is roughly $9 trillion in US corporate bonds; high-yield (BB+ and below) is roughly $1.5 trillion; leveraged loans add another $1.4 trillion; private credit has grown to over $1.7 trillion globally. Each tier represents a step up in default risk, illiquidity, and yield.

Spread compression and widening drive credit returns more than rate changes do, in normal conditions. Investment-grade option-adjusted spread (BAML IG OAS) of 90bp in April 2026 is below the 25-year median near 130bp. High-yield OAS at 320bp is well below the 25-year median near 500bp. Both readings are at cycle tights, the kind of complacency that historically precedes some of the cleanest entry points when credit cycles turn.

Distinct sub-segments behave differently. Energy HY spreads were 800bp+ during the 2014-2016 oil bust while broader HY held tighter. Financial credit is sensitive to bank funding stress (2023 SVB episode pushed regional bank spreads materially wider while non-bank IG held). EM hard-currency credit (Mexican and Brazilian sovereigns, Asian corporate) is its own regime tied to dollar strength and local fiscal trajectories. CLO equity tranches respond to the credit-quality distribution of the underlying loan portfolio rather than to simple OAS.

IG OAS at 90bp and HY OAS at 320bp both sit at multi-cycle tights. The spread compression has been the signature trade of 2024-2026: investors stretching for yield as cash rates plateau, structured-credit demand pulling spread tighter, and a soft-landing macro narrative supporting risk premia. HYG (high yield ETF) is near 12-month highs; LQD (investment grade ETF) has lagged on duration but is at fair value relative to OAS.

Default rates are subdued. US speculative-grade default rate is running roughly 3.5% trailing 12-month, near the long-run median, with the recent peak of 4-5% during 2023-2024 fading. Distressed credit (CCC OAS over 800bp) makes up roughly 8% of the HY market, low relative to 2008 (30%+) or 2020 (25%+) but elevated versus 2021 cycle tights.

Financial conditions overall are accommodative. The Chicago Fed NFCI is below zero (loose), supported by tight credit spreads, low VIX, and ample bank liquidity. The Bloomberg US Financial Conditions Index also shows accommodation, the loosest since early 2022. The combination of restrictive Fed funds (3.50-3.75%) with loose financial conditions is paradoxical and reflects the long policy lag operating through credit and asset markets rather than through bank lending.

The pattern resembles late-2006 / early-2007 (very tight credit before a sharp turn), late-2017 (tight credit followed by a vol spike but no recession), and mid-1998 (tight credit ahead of LTCM/Russia spike). The path forward depends on which prior cycle is the closest analog.

Default risk (the fundamental anchor) is the first driver. Spreads ultimately have to pay for realized losses, default rate plus loss-given-default minus recovery. Over a full cycle, the realized HY default rate is 4-5%, and HY OAS averages 500-600bp, leaving roughly 100-200bp as compensation for liquidity and tail risk. When OAS compresses below 350bp (April 2026 at 320bp is in this zone), the implied default rate is 2% or lower, sustainable only in benign cycles. Realized default rate creep above 4% would force spreads wider mechanically.

Liquidity and risk appetite are the second driver and the source of cycle dynamics. Tight financial conditions and risk-off sentiment widen spreads independent of fundamentals. The 2008 episode where IG OAS hit 600bp briefly was almost entirely about funding stress, not about realized default risk. The 2020 COVID HY OAS spike to 1,100bp was the same dynamic. Watch the NFCI and the HYG-LQD ratio for early-warning signals.

Issuance dynamics are the third driver. When primary issuance dries up (as in late 2008, March 2020, October 2022), it signals stress in the secondary market and forces existing holders to mark down. When issuance is heavy and oversubscribed (April 2026 has been near record issuance for IG year-to-date), it signals demand outstripping supply and supports tight spreads.

On March 23, 2020, HY OAS peaked at 1,087bp, the highest reading since the 2008 financial crisis. IG OAS spiked to 401bp on the same date. The Fed's unprecedented response, the launch of the Primary Market Corporate Credit Facility (PMCCF) and the Secondary Market Corporate Credit Facility (SMCCF) on March 23, 2020, marking the first time the Fed bought corporate credit, instantly compressed spreads. By June 2020, HY OAS was back below 600bp and IG OAS below 200bp. The cycle established the policy precedent that the Fed will backstop credit markets directly during systemic stress, a fact that arguably explains why April 2026 spreads are so tight: investors price in implicit Fed support that did not exist before 2020.

IG OAS peaked at 614bp on December 5, 2008, and HY OAS peaked at 1,971bp on November 26, 2008, the widest readings since the index's inception. The realized HY default rate hit 14% by 2009. IG was repriced as if AAA were BBB. Counterparty risk seized the credit market entirely, the LIBOR-OIS spread blew out to 364bp, indicating banks would not lend to one another. The Fed's QE program, TARP, and direct interventions stabilized markets through 2009, and by 2011 spreads had retraced to their pre-crisis range. The 2008 cycle is the canonical worst-case credit scenario and the implicit benchmark against which every other credit shock (2011 European sovereign, 2015-2016 oil, 2020 COVID, 2022-2023) is measured.

LQD (iShares Investment Grade Corporate Bond ETF): 8-year duration, IG OAS 90bp. The default IG-credit benchmark with duration overlay.

HYG (iShares High Yield Corporate Bond ETF): 4-year duration, HY OAS 320bp. The default HY-credit benchmark; HYG/LQD ratio is the canonical risk-on/risk-off measure.

JNK (SPDR High Yield Corporate Bond ETF): HYG alternative with similar exposure profile.

BAML HY OAS (BAMLH0A0HYM2): the institutional benchmark for HY spread. 320bp in April 2026, well below long-run median of 500bp.

BAML IG OAS (BAMLC0A0CM): the institutional benchmark for IG spread. 90bp, below 25-year median of 130bp.

NFCI (Chicago Fed National Financial Conditions Index): aggregates 105 financial-stress indicators. Currently below zero (loose). Above zero is restrictive.

SOFR (Secured Overnight Financing Rate): the post-LIBOR overnight benchmark. Currently around 4.30%, anchored by Fed funds.

Credit versus equities runs through the same fundamental driver (corporate cash flow) but with different sensitivities. HY credit has historically led equity drawdowns by 2-6 weeks in major cycles. The credit market sees deterioration first because it requires fewer buyers to clear and has tighter ownership concentration. Watch HYG-LQD ratio relative to SPY, divergences (credit weakening while equities make highs) are the cleanest early-warning signal of regime change.

Credit versus the curve runs through the recession-leading-indicator channel. Curve inversion (10Y-2Y inverted) typically precedes credit-spread widening by 6-18 months. The 2022-2024 inversion did not produce a recession, but it preceded the 2023 banking stress (SVB) and the 2024 carry-trade unwind. With the curve un-inverted to +52bp in April 2026, the recession-via-curve signal has dissipated, though credit-cycle risk remains.

Credit versus the dollar runs through emerging-market dollar funding. EM hard-currency sovereign and corporate credit is sensitive to DXY; a strong dollar tightens EM funding and widens EM credit. The April 2026 DXY in the high-90s has been a tailwind for EM credit, with EMB (emerging markets sovereign bond ETF) flat-to-up year-to-date.

Credit versus volatility is structurally tight. VIX and HY OAS correlate at 0.5-0.7 over rolling windows. A VIX spike above 25-30 typically maps to HY OAS widening 50-150bp.

First: HY OAS at 320bp. Sustained tightening below 300bp would be 1990s-style cycle compression, while widening above 400bp would mark the start of a credit-cycle turn. The 50-day moving average is the cleanest signal.

Second: IG OAS at 90bp. Below 80bp would match 2007 / late 2017 lows. Above 110bp would signal early-cycle turn.

Third: NFCI and Bloomberg FCI direction. The current accommodative readings are the primary support for tight spreads. A move into restrictive territory would pressure spreads wider.

Fourth: realized default rate. The recent 3.5% TTM HY default rate is near long-run median. A drift toward 4-5% would force spread re-pricing on fundamentals.

Fifth: primary issuance trends. Continued strong oversubscribed deals indicate demand intact. Issuance freezes (no IG deals priced in 5+ business days) are the canonical first sign of credit-market stress.