Real Estate and REITs

Default risk is the chance that the borrower stops paying — misses coupon payments, or fails to return your principal at maturity. When a company goes bankrupt, bondholders stand ahead of stockholders in line for whatever is left — but "whatever is left" can be pennies on the dollar. The 2008 financial crisis gave the world a brutal demonstration: bonds that investors believed were nearly risk-free turned out to be stuffed with mortgages that stopped paying, and the prices of those bonds collapsed.

Default risk is not an abstract statistic. It concentrates exactly where it hurts most — in recessions, when companies' revenues fall and their debts come due at the same time. That is why credit risk and the economic cycle travel together: in good times defaults are rare and investors barely think about them; in bad times they dominate everything. The price a bond pays you — its yield — always includes a fee for this risk. Higher promised yield, higher chance you do not see it.

Three companies grade nearly every bond in the world: S&P, Moody's, and Fitch. Think of them as report cards for borrowers. They dig through the borrower's financials, judge how likely it is to keep paying, and stamp the bond with a letter grade. For S&P and Fitch the scale runs AAA (safest) down through AA, A, BBB, BB, B, and so on to D (already defaulted). Moody's uses its own letters — Aaa down to C — but the idea is identical.

The single most important line on the report card is the dividing line between investment grade and high-yield (nicknamed junk) bonds. For S&P, that line sits between BBB and BB; for Moody's, between Baa and Ba. Above the line: borrowers solid enough that pension funds and insurance companies — which manage other people's money under strict rules — are allowed to buy them. Below the line: borrowers shaky enough that only investors paid for the extra risk may play. When a bond is downgraded across that line — a fallen angel — many big funds are forced to sell at once, and the price can crater.

AP-206 introduced the credit spread: the extra yield a risky bond pays above a safe Treasury of the same maturity. Now you can read it. When the economy is humming and defaults look unlikely, investors barely demand extra — spreads are narrow, maybe 1% for solid companies. When trouble looms, investors demand real compensation — spreads widen, sometimes to 3%, 5%, or in a panic, far more.

Spreads are a fear thermometer you can check every day. In 2008, junk-bond spreads blew out past 20% — the market was screaming that mass defaults were coming. In calm years, they sit near 3–4%. You do not need to predict defaults yourself; the collective judgment of every bond trader on earth is distilled into that one number. When spreads widen fast, treat it the way you treat an inverted yield curve: a warning, not a trade signal — tighten up, check your own risk, and wait for calm.

The pattern to remember: prices of risky bonds fall when spreads widen, because the extra required yield can only come from a lower price (AP-207's seesaw again). This is why junk bonds can drop like stocks in a crisis — exactly when you most want your bonds to be the steady part of your portfolio. That is not a flaw in the theory; it is the lesson. In panics, risky bonds behave like stocks.

The agencies do real, useful work — but never treat a rating as a guarantee. Ratings are opinions, and opinions can be late. In 2008, the agencies had stamped top grades on mortgage bonds that were already rotting; the downgrades arrived after the damage was done. The agencies are paid by the very borrowers they rate, which is a conflict of interest worth knowing about — like a restaurant critic paid by the restaurant.

Use ratings the way you use a weather forecast: a genuinely helpful starting point, never the whole decision. Pair the grade with your own checks — is the borrower's debt growing faster than its earnings? Are spreads widening even though the rating has not moved? The market often smells trouble before the agencies admit it. Your spread thermometer updates daily; their report card updates when they get around to it.

The complete bond picture is now in place: AP-206 gave you rates and duration, AP-207 gave you pricing, and this lesson gave you credit. Together they are the whole fixed-income game — how much you earn, how much it can move, and how likely you are to get paid. Next, we step outside stocks and bonds entirely.

Stocks and bonds are the main course, but portfolios have side dishes too. AP-209 "Real Assets and REITs" covers property, commodities, and where they fit.

> Recommended Tools > > Curious how bonds actually get rated and priced in the real world? [Motley Fool](#) publishes plain-English breakdowns of corporate bonds and credit news — a good way to watch spreads move. > > FTC disclosure: The Academy may earn a commission if you sign up through these links — it keeps the free lessons free.