Bonds & Rates
A bond is just a loan you can re-sell — and the interest rate runs the entire show. Learn the see-saw that ties price to yield.
Bonds demystified from the ground up — what a bond really is (a loan you can sell), how its price and yield trade on a see-saw, what the yield curve says about the future, and how duration and convexity measure interest-rate risk. Worked numbers, the bond-price see-saw, and interactive charts throughout.
A bond is just a loan with a resale market bolted on: you lend to a government or a company, get a piece of paper promising fixed payments, and — here’s the twist — you can sell that paper to someone else tomorrow. The instant a loan becomes tradable its price has to move, because the world’s rates keep changing while your bond’s payments stay frozen.
Climbing one rung at a time, this topic covers:
- What a bond actually is — coupon, face value, maturity, and the cast of characters on that piece of paper.
- Bond prices and yields — the see-saw where one goes up only when the other goes down, the single most important relationship in fixed income.
- The yield curve — what it means when long-term rates sit above (or, ominously, below) short-term ones.
- Duration — the bond’s effective time-to-payback and its gauge of how much it lurches when rates move.
- Convexity — the correction that explains why duration alone always lies a little.
It ends with a final exam that makes you trade the see-saw for real. Get these six and a bond prospectus stops looking like hieroglyphics.
In this topic
- 1 What Is a Bond? You're the Lender Now A bond is a loan you make: the issuer borrows now and promises periodic coupons plus your face value back at maturity. The four defining terms, a worked cash-flow, and how bonds differ from stocks. 9 min
- 2 Bond Prices and Yields: The See-Saw A bond's coupon is fixed, but its price moves — and price and yield always move in opposite directions. Par, premium, discount, current yield, and YTM, with clean worked numbers and a live see-saw. 9 min
- 3 The Yield Curve: Reading the Term Structure of Rates The yield curve plots one issuer's yields against maturity at a single moment. Learn its three shapes — normal, flat, inverted — why inversion warns of recession, and how to read the 10y−3m spread. 9 min
- 4 Duration: How Much Bonds Move Duration measures how much a bond's price moves when yields change. Macaulay duration as the cash-flow balance point, modified duration, the %ΔPrice ≈ −ModDur × Δyield rule, and the four drivers — worked numbers and a live see-saw. 9 min
- 5 Convexity: The Curve Duration Misses Duration is a straight line; the real price–yield relationship is a curve that bows above it. That curvature is convexity — it makes your losses smaller and your gains bigger than duration alone predicts. Worked numbers, a table, and a live curve. 9 min
- 6 Final Exam: Bonds & Rates The graded, locked capstone exam for Bonds & Rates — covering what a bond is, the price-yield seesaw, the yield curve, duration, and convexity, with a 70% pass mark. 15 min
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