Swaps & Rate Derivatives
A swap is the most elegant trick in finance: two parties promise each other streams of interest, exchange only the difference, and quietly reshape trillions in risk. No principal ever moves — yet this is the largest derivatives market in the world. Learn to build one from a fixed leg and a floating leg, price it as the difference of two bonds, and hedge an entire rate book with it.
The biggest derivatives market on earth, taught from first principles to desk-grade practice. Build an interest-rate swap out of a fixed leg and a floating leg, see why only the net changes hands, decompose a swap into a strip of FRAs and value it as one bond minus another, derive the par swap rate, build the swap curve and discount on OIS, live through the death of LIBOR and the rise of SOFR, read swap spreads (even negative ones) and asset swaps, glance at caps, floors and swaptions, and hedge a whole rate book to a near-zero DV01. Worked numbers, cash-flow diagrams, a swap curve with implied forwards, a two-bond valuation bridge, and a swap-spread chart throughout.
Walk into any large bank, pension fund, insurer, or corporate treasury and you will find a swap somewhere near the centre of how they manage interest-rate risk. An interest-rate swap is, at heart, a deal so simple it sounds like it shouldn’t matter: I promise to pay you a fixed interest rate on some agreed amount; you promise to pay me a floating rate on the same amount; and every period we just exchange the difference. The amount itself — the notional — never changes hands. And yet this unglamorous trade is the foundation of the largest derivatives market on the planet, with hundreds of trillions of dollars in notional outstanding.
This is the expert capstone of the rates track. You already know how to price a bond, measure its duration and DV01, bootstrap a yield curve into spot and forward rates, and lock a price with a forward. Here you put all of it to work on the instruments a real rates desk actually trades:
- What a swap is — the fixed leg, the floating leg, why only the net settles, and the two classic motives: transforming a liability and exploiting comparative advantage.
- FRAs & forward rates — the forward rate agreement, the single-period atom of a swap, and the insight that a swap is just a strip of FRAs bolted together.
- Pricing swaps as bond differences — value a swap as a fixed-rate bond minus a floating-rate bond, see why the floating leg is worth par at each reset, and derive the par swap rate that makes a new swap worth zero.
- The swap curve & OIS discounting — build the term structure of par swap rates, read the implied forwards inside it, and discount cash flows on the OIS curve the way every collateralised desk now does.
- SOFR & the death of LIBOR — why a benchmark that underpinned hundreds of trillions was scrapped, and how a secured, overnight, compounded-in-arrears rate replaced it.
- Swap spreads & asset swaps — the gap between swap rates and government yields, why the long end can go negative, and how an asset swap strips a bond down to a clean spread over the floating index.
- Caps, floors & swaptions — the optional cousins: a cap that bounds your floating cost, a floor that protects a lender, and a swaption — the option to enter a swap.
- Hedging a rate book with swaps — the payoff of the whole course: neutralise the DV01 of an entire portfolio with a swap overlay so a rate move barely scratches it.
By the end you’ll build a swap from its two legs, decompose it into FRAs, price it from a curve, discount it correctly, quote it against governments, bound it with options, and use it to flatten the rate risk of a book — exactly the toolkit a swaps trader, an ALM manager, or a fixed-income risk officer carries to work.
In this topic
- 1 What an Interest-Rate Swap Is Swap a fixed rate for a floating one without touching the loan: meet the legs, the notional, payer vs receiver, net settlement, and why a $100T+ market isn't as scary as it sounds. 12 min
- 2 FRAs: The Building Blocks of a Swap Lock a future interest rate today: forward rates by no-arbitrage, the FRA contract, its discounted cash settlement, and why a swap is just a strip of FRAs. 13 min
- 3 Pricing a Swap as the Difference of Two Bonds Decompose a swap into two bonds: a receive-fixed swap is long a fixed-rate bond, short a floating bond worth par. Derive the par swap rate and mark to market. 14 min
- 4 The Swap Curve and OIS Discounting Read the par swap curve, bootstrap it into discount factors and forwards, and meet the post-2008 dual-curve world where OIS discounting splits projection from discounting. 14 min
- 5 SOFR and the Death of LIBOR How LIBOR — a survey-based unsecured term rate — was rigged, then replaced by SOFR: secured, overnight, transaction-based, and compounded in arrears. 13 min
- 6 Swap Spreads and Asset Swaps Decode the swap spread — swap rate minus matched Treasury — why long-end spreads went negative post-2008, and how asset swaps turn any bond into a synthetic floater. 13 min
- 7 Caps, Floors, and Swaptions Master optional rate derivatives: caps as strips of caplets, floors as floorlets, cap–floor parity, collars, and payer vs receiver swaptions priced off rate vol. 14 min
- 8 Hedging a Rate Book with Swaps Neutralise a rate book with swaps: compute a swap's DV01, size the hedge ratio, pick payer vs receiver, and face the residual curve, basis and convexity risks. 14 min
- 9 Final Exam: Swaps & Rate Derivatives A graded, one-shot final exam across the whole Swaps & Rate Derivatives course — swap mechanics, FRAs, pricing as bond differences, the swap curve and OIS discounting, SOFR vs LIBOR, swap spreads and asset swaps, caps/floors/swaptions, and hedging a rate book. 28 min
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