Government bonds settle the "risk-free rate"; the other half of the bond world is credit: the market openly prices the possibility that a borrowing company defaults — and that price is the credit spread.
This chapter dives into credit bonds: how to read spreads, why anyone buys high yield, where the traps are, post-guarantee realities in China, and why the credit spread is a leading thermometer for equities.
I. What Credit Bonds Are: Spread = The Price of Default
Credit bonds are debt issued by non-government entities: enterprise/corporate bonds and medium-term notes (MTNs) domestically; corporate bonds overseas. Their only difference from Treasuries — the issuer might not be able to repay.
| Instrument | Issuer | Relationship to Treasuries |
|---|---|---|
| Government/policy bank bonds | Government credit | The risk-free benchmark |
| Enterprise bonds | Mainly large SOEs/centrally-affiliated firms (domestic legacy classification) | Yield = Treasury + spread |
| Corporate bonds | Listed companies/private firms/mixed ownership | Spread varies with quality |
| Medium-term notes (MTNs) | Interbank-registered corporate debt instruments | Mainstream institutional market |
Credit Spread
Credit spread = same-maturity credit bond yield − Treasury yield
- The spread = the total premium the market charges for "default risk + poor liquidity + information asymmetry."
- At the same maturity, a AAA centrally-affiliated issuer's spread might be 20–50bp while an AA private issuer's could be 200–500bp or more (magnitudes are teaching approximations; defer to the latest conditions).
- The spread is the price of a label: a bond yielding far above peers isn't "cheap" — the market is tagging it with default probability.
II. What Credit Spreads Mean
Widening = Rising Risk Aversion
- Spreads narrowing → markets demand less compensation for risk → risk appetite recovering (improving growth expectations).
- Spreads widening → markets demand more compensation to buy → risk aversion rising (economic deterioration / credit events).
Numeric Intuition (teaching approximation)
- 2008 financial crisis: US high-yield spreads surged from a normal 300–500bp to above 1500–2000bp (historical common knowledge); credit markets froze for a time.
- March 2020 pandemic shock: spreads blew out just as fast, then narrowed quickly on the Fed's "buying credit bonds" policies.
- Post-2022 aggressive Fed hikes: a high-rate environment squeezed corporate financing and lifted the center of gravity for spreads.
💡 Spreads and Treasury Yields Are Two Independent Axes
Treasury yields reflect "rate expectations"; credit spreads reflect "default panic." Both widening together (yields up + spreads up) is among the nastiest preconditions for a stock-bond double kill.
Ratings: The Official Label on Spreads
| Rating agency | Investment grade | High yield (junk grade) |
|---|---|---|
| S&P | AAA / AA / A / BBB | BB+ and below |
| Moody's | Aaa / Aa / A / Baa | Ba1 and below |
| Fitch | AAA / AA / A / BBB | BB+ and below |
- BBB− / Baa3 is the dividing line: above it, investment grade (routinely held by institutions); below it, high yield (held within risk budgets).
- A downgrade of the same corporate bond (BBB → BB) triggers the "Fallen Angel" phenomenon: funds restricted to investment grade are forced to sell en masse — prices collapse and spreads spike. Rating changes alone can manufacture volatility.
- Reminder: ratings are lagging and conflicted (issuer-pays model); "highly rated" ≠ "won't default" (the 2020 default of AAA-rated Yongcheng Coal being the lesson).
III. High-Yield Bonds (Junk Bonds): The Math Behind 8%–15%
High-yield bonds (High Yield / Junk Bond): corporate debt rated below investment grade (S&P BB+ and below; Moody's Ba1 and below). Ugly name, but a fixture of institutional asset allocation.
Why Does Anyone Buy an 8%–15% Yield?
Mathematical essence: use high coupons to absorb default losses, pocketing the expected gap in between
Example (teaching approximation): a high-yield bond yields 10%; historical default rate ~3%, recovery rate ~40%
Expected annual loss ≈ default rate × (1 − recovery rate) = 3% × 60% = 1.8%
Net expected return ≈ 10% − 1.8% = 8.2% (far above Treasuries)
But note: defaults aren't evenly distributed — nothing happens for years, then they cluster in crises
- The key isn't any single bond but diversification: index-style holdings across dozens or hundreds of names turn defaults into "computable small losses" via the law of large numbers.
- Historical statistical common knowledge: US high-yield indices have outpaced Treasuries long term, but with volatility and drawdowns near equities (single-year losses of 20%–30%+ in crisis years; 2022 was a grim year for high yield).
What Makes Up a High Yield's "High Yield"
| Component | Meaning |
|---|---|
| Base rate | The risk-free part, floating with the Fed |
| Credit spread | Default compensation; the core risk component |
| Term premium | Compensation for holding longer-dated paper |
| Option adjustment | Compensation for uncertainty from possible early redemption/extensions by the issuer |
IV. The High-Yield Trap: Liquidity Drought When Defaults Cluster
The biggest risk in high yield isn't default itself but the liquidity drought when defaults erupt together:
| Crisis stage | Market state | Your experience as a holder |
|---|---|---|
| Normal times | Two-way flow, tight quotes | Everything looks fine |
| Risk event (single default) | Spreads widen, selling pressure appears | NAV starts slipping |
| Clustered defaults (recession/crisis) | Buyers vanish, quotes vanish | Can't sell, or only at half price; fund redemptions surge → forced fire-sales → NAV falls further — a spiral |
- Bond funds guarantee neither capital nor liquidity: the negative feedback of "redemption → fire-sale → further NAV decline" is real (China's 2022 wealth-management redemption wave and HY funds' discounted dumping in March 2020 both prove it).
- Historical common knowledge: in crisis years, high-yield daily trading volume can collapse to a fraction of normal — however high the paper return, unrealized it's vapor.
💡 The Right Way to Approach High Yield
Institutions participate with indexing + diversification + long-duration money; individuals who participate must accept a "don't touch it for two years" liquidity plan and be ready for 20%–30% drawdowns in the worst years.
💀 Iron Rule: High Yield's Biggest Risk Isn't Default Itself — It's the Liquidity Drought When Defaults Cluster
The biggest risk in high-yield bonds isn't default itself but the liquidity drought when defaults erupt together. Normally there's two-way flow and tight quotes and everything looks fine; once crisis arrives buyers vanish and quotes vanish — you can't sell, or only at half price. However high the paper return, unrealized it's vapor; accept a "don't touch it for two years" liquidity plan.
The Micro-Mechanics of Liquidity Drought
- Bond markets are quote-driven (OTC): dealers quote continuously in calm times, but in crisis they shrink inventories and spreads widen several-fold — the same bond quoted at $0.10 wide normally may go 5–10 dollars wide in a crisis.
- High yield has no daily-limit circuit breakers and no delisting grace period — declines come as a slow bleed plus vanishing bids; you can't even find a counterparty to cut losses.
- Transmission to fund holders: NAV falls → investors redeem → fund forced into discounted sales → NAV falls more — those who didn't redeem share the losses too.
V. China's Credit Bond Reality
After Breaking Implicit Guarantees: Default as Routine
- After the first default in 2014 (the 11 Chaori Bond), private-enterprise defaults became routine events (several every year; specific cases subject to the latest market information).
- The 2020 "Yongcheng Coal" event (an unexpected AAA-rated SOE default) was a landmark shock: even "high-rated SOEs" defaulted, and reflection on rating inflation and faith-based pricing peaked.
- Present reality (common knowledge): pricing of private credit bonds below AA+ has diverged sharply, and weak issuers have effectively exited public bond financing; credit investing shifted from "faith-driven" to "fundamentals-driven."
Property Bond Volatility (Public-Events Explainer)
- From 2021 the property sector entered deep adjustment, and head developers like Evergrande and Country Garden fell into debt crises one after another (public news common knowledge): offshore dollar-bond defaults, onshore extension negotiations, restructuring plans — the largest single-industry risk episode in recent Chinese credit markets.
- Lessons:
- "Too big to fail" doesn't hold — asset scale ≠ debt-servicing capacity;
- Property bond volatility comes not just from fundamentals but from market sentiment and policy expectations amplifying each other;
- Individuals should judge risk from public disclosure and industry common sense, never buying into any "insider information" narrative.
Chengtou (LGFV) Divergence
- Since debt-resolution policies advanced, "implicit guarantees on public chengtou bonds" coexist with "non-standard instrument defaults" (non-standard: trusts, leasing, directional financing, etc.);
- Risk pricing diverges between high-debt regions and weak platforms, and "chengtou faith" is shifting from blanket belief to issuer-by-issuer repricing (subject to the latest regulations/policy and market conditions).
VI. Participation Routes for Ordinary Investors
| Route | Threshold | Recommended? | Notes |
|---|---|---|---|
| Buying credit bonds directly | Qualified-investor threshold (historically ~1M RMB; subject to the latest rules) | Not recommended | Extreme single-name concentration, clear informational disadvantage; a single default hits hard |
| High-yield/credit bond funds | ~1,000 RMB | Relatively acceptable | Diversified holdings, but check rating distribution, duration, and leverage |
| Convertible bonds | From 1,000 RMB | Relatively friendly | Bond+option structure carries a natural credit cushion (bond floor); better suited to individuals than naked credit exposure |
| Hybrid bond funds / fixed-income-plus | ~1,000 RMB | Acceptable | Blended strategies; volatility between pure bonds and stocks |
| QDII USD bond funds | ~1,000 RMB | Cautious | Quota premiums stack with currency and offshore credit risk |
Core advice: retail's sensible route into bonds is indirect participation through funds + diversified holdings + explicit risk budgets, not "loading up one high-coupon bond to collect interest" — after guarantees broke, the latter is subtraction from principal.
💀 Iron Rule: Loading Up One High-Coupon Bond Is Subtraction From Principal
Retail's sensible route into bonds is indirect participation through funds + diversification + explicit risk budgets — not loading one high-coupon bond to collect interest. The 2020 default of AAA-rated Yongcheng Coal is the lesson: "highly rated" ≠ "won't default." So a bond yielding far above its rating cohort at the same maturity carries a default-risk tag from the market — not a free lunch.
VII. Credit's Leading Signal for Equities
The credit spread = the temperature gauge of corporate financing conditions — the bridge between bonds and stocks:
| Signal | Meaning | Transmission to equities (historical statistical common knowledge) |
|---|---|---|
| Spreads narrowing | Cheaper issuance, smooth financing | Risk appetite recovers, bullish for stocks; earnings-repair expectations lead |
| Spreads widening | Costlier financing, harder issuance | Corporate cash flow strained; equity risk appetite fades |
| Spreads blowing out | Credit freeze (2008, 2020) | Stocks often crash concurrently or shortly after — the alarm of a liquidity crisis |
- Practical usage: glance at the direction of credit spreads weekly. When spreads begin narrowing persistently from highs (e.g., post-crisis repair phases), it often coincides with the market's "expected bottom"; when spreads widen against the grain while stocks still rally, it warns that "bonds sensed the risk before stocks."
- Domestic proxies: ChinaBond enterprise-bond/AA+ credit spreads versus Treasuries, and the interbank funding combination of "credit spread + term spread."
⚠️ Read Tight-Credit-Cycle Equity Rallies Carefully
An easily missed detail: in "tight credit" cycles, equity rallies are often valuation bounces without earnings support — until spreads narrow, treat every sharp rally with caution.
✅ Conclusion: Credit Spreads Are Equities' Leading Thermometer
The credit spread = the temperature gauge of corporate financing — the bridge between bonds and stocks. Persistent narrowing from highs often marks the equity market's "expected bottom"; widening against the grain while stocks rally warns that bonds sensed the risk first — until spreads narrow, treat every sharp equity rally with caution.
VIII. The Truth About "Junk Bond Investing"
Historical Data Common Knowledge (teaching citations; defer to latest research)
- Long term: US high-yield indices (e.g., ICE BofA High Yield) have historically annualized well above Treasuries — mostly 6%–9% across measured windows (historical common knowledge) — decisively beating the risk-free rate.
- But watch the volatility too: maximum annual drawdowns match the S&P 500's class (20%–30%+). The cost of "high yield" is high volatility — never "high return, low risk."
- Return structure: over the long run, coupons contribute nearly all of the index's return; price contribution is close to zero — you earn "time's money," not "direction's money."
- Survivorship bias warning: indices comprise surviving issues; defaulted and wound-up bonds get removed, so real investable historical returns are usually lower than back-calculated values — reason enough to discount every high-yield statistic.
The One-Line Truth
High-yield bonds = equity-grade risk packaged and sold as bond coupons
Institutions buy them because they can diversify, research, and stomach the volatility
Individuals buy them mostly seduced by "8%-15%" coupons without a matching risk budget
Risk Warning
⚠️ Risk Warning
Credit/high-yield bonds carry substantive default risk: after implicit guarantees broke, total loss of principal is a real possibility, not a theoretical one. Spreads, default rates, and historical returns here are teaching figures and statistical common knowledge — defer to the latest market data; named default events (Evergrande, Yongcheng Coal, etc.) are public-events explainers only and judge no party's current state. High-yield volatility and drawdowns rival equities, and liquidity can evaporate in crises. Assess your own risk tolerance before participating; this article is not investment advice.