FINM6041 · Applied Derivatives
Derivatives Markets & Contract Mechanics
Derivatives Markets & Contract Mechanics (Lecture 1) is the map the rest of FINM6041 is drawn on. A derivative is any product whose value is derived from an underlying — a commodity, a currency, a security, or a notional variable such as an interest rate or an index. Everything you meet later hangs off one classification tree: forward commitments (futures, forwards, swaps — where both sides are obligated) versus contingent claims (options and other products where the holder has a right, not an obligation). This chapter fixes the vocabulary — long vs short, forward vs futures, OTC vs exchange-traded, European vs American — and the exchange plumbing that makes futures work: the margin account, daily marking to market, open interest and trading volume, closing out by an offsetting trade, physical vs cash settlement, and the convergence of the futures price to the spot price as delivery approaches. It closes with the three reasons anyone trades: to hedge, to speculate, or to arbitrage.
What this chapter covers
- 01What a derivative is: value derived from an underlying (commodity, currency, security, or notional variable)
- 02The classification tree: forward commitments (futures · forward · swap) vs contingent claims (options · exotics · ABS/CDS)
- 03Forward vs option: an obligation for both sides vs a right the buyer pays a premium for
- 04Forward vs futures: OTC and customised vs exchange-traded, standardised and margined
- 05Long payoff S_T − F, short payoff F − S_T; call max(S_T − X, 0), put max(X − S_T, 0)
- 06Futures plumbing: margin accounts, daily marking to market, closing out, physical vs cash settlement
- 07Open interest (contracts outstanding) vs trading volume (contracts traded in a day)
- 08Convergence F → S at delivery, and the three players: hedgers, speculators, arbitrageurs
Tracking open interest, volume, and convergence on a new futures contract
- 1 markRule for open interest: it rises only when a trade creates a brand-new contract — a new buyer AND a new seller. If one side is opening while the other is closing, the number of outstanding contracts is unchanged; if both sides close, it falls.
- 1 mark(a) After Trade 1: both A and B open new positions, so 10 fresh contracts are created ⇒ open interest = 10.
- 1 mark(a) After Trade 2: C opens a new long but A is closing part of an existing long — one opener, one closer ⇒ open interest is unchanged at 10.
- 1 mark(a) After Trade 3: D and E both open new positions ⇒ 4 more contracts created, open interest = 14.
- 1 mark(b) Trading volume counts every contract that changes hands during the day, regardless of opening or closing: 10 + 6 + 4 = 20 contracts. Volume (20) is not the same as open interest (14).
- 1 mark(c) As the delivery month nears, arbitrage forces the futures price toward the spot price: any gap would let a trader buy the cheaper of the two and deliver into the dearer, so F → S and the $1 basis shrinks to ≈ 0 at delivery.
Key terms
- Derivative
- A product whose value is derived from an underlying — a commodity, currency, security, or a notional variable such as an interest rate or index. Splits into forward commitments (both sides obligated) and contingent claims (a right, not an obligation).
- Forward vs futures
- Both lock in a price for future delivery, but a forward is a customised over-the-counter agreement with counterparty credit risk, while a futures contract is exchange-traded, standardised, and marked to market daily through a margin account.
- Marking to market
- The daily settlement of a futures position: gains and losses are posted to the margin account each day using the settlement price, so the contract's accumulated value is realised progressively rather than only at delivery.
- Open interest
- The number of futures contracts currently outstanding (equal to the total long positions, and to the total short positions). It rises only when a new buyer and new seller create a contract and falls when both sides close out.
- Convergence
- As the delivery month approaches, arbitrage forces the futures price F to converge to the spot price S, because any gap between a near-delivery future and the physical asset is a riskless profit.
- Hedger, speculator, arbitrageur
- The three motives for trading derivatives: a hedger offsets an existing exposure, a speculator takes on risk to bet on a price move, and an arbitrageur locks in a riskless profit from a pricing inconsistency.
Derivatives Markets & Contract Mechanics FAQ
What exactly is a derivative in FINM6041?
A derivative is a contract whose value comes from something else — the underlying. The course's classification tree splits them into forward commitments (futures, forwards and swaps, where both parties are obligated) and contingent claims (options and their relatives, where the buyer holds a right and pays a premium for it). Almost every exam concept-MCQ starts by testing whether you can place a product correctly on that tree.
What's the difference between a forward and a futures contract?
Both fix a price today for a transaction later. A forward is private and customised — traded over the counter, so it carries counterparty credit risk and no daily cash flows. A futures contract is exchange-traded and standardised, backed by a margin account and marked to market every day, which largely removes credit risk. The course prices both with the same cost-of-carry model and, for valuation, treats the futures price as equal to the forward price.
How is open interest different from trading volume?
Trading volume is the number of contracts that change hands during a day; open interest is the number of contracts still outstanding at a point in time. A single trade always adds to volume, but it only increases open interest when it creates a brand-new contract (a new buyer and a new seller). If one party is closing out while the other opens, open interest is unchanged — a favourite exam distinction.
Do I need to know margin and mark-to-market for the FINM6041 exam?
Yes, at the mechanics level. The concept-MCQ bank routinely tests how daily settlement works, why a futures position generates daily cash flows through the margin account while a forward does not, and how closing out by an offsetting trade differs from holding to delivery. You won't be asked to run a full margin schedule, but you must be able to explain the plumbing in words.
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Exam move
Treat Lecture 1 as the vocabulary layer the exam's large concept-MCQ block draws on every year. Drill four reflexes until they are automatic: (1) place any product on the classification tree — forward commitment or contingent claim; (2) write the payoff sign correctly — long forward S_T − F, short forward F − S_T, and never confuse a long put with a short call; (3) keep open interest and trading volume apart — new-buyer-and-new-seller raises open interest, everything else may just be volume; and (4) state why F converges to S at delivery. These are the cheapest marks on the paper, so bank them cold before you spend time on pricing.
