Unit 3: Derivatives
International Finance and Financial Derivatives notes · PTU syllabus (MBA 915-18)
On this page
- Unit summary
- Meaning, types and importance of derivatives
- Regulatory framework of derivatives in India
- Forwards and futures compared
- Pricing futures and mark-to-market
- Speculation, hedging and arbitrage
- Option contracts
- The Black–Scholes model
- Put–call parity
- Option trading strategies
- Key terms
- Quick revision
- Important questions
Unit summary
Derivatives let firms and investors transfer risk — or take it on. This unit covers the meaning, types, importance and regulatory framework of derivatives in India, forwards vs futures, pricing and mark-to-market, speculation, hedging and arbitrage, option contracts, the Black–Scholes model, put–call parity and option trading strategies.
After this unit you can
- Explain the meaning, types, importance and regulation of derivatives
- Compare forwards and futures and explain pricing and mark-to-market
- Explain hedging, speculation and arbitrage
- Price options and apply put–call parity and option strategies
PTU syllabus topics
- Meaning
- types
- importance and regulatory framework of derivatives in India
- forward vs futures contracts
- pricing and mark-to-market
- speculation/hedging/arbitrage
- option contracts
- Black-Scholes model
- put-call parity
- option trading strategies
Put-call parity
C + K e^(−rT) = P + S
Black-Scholes call
C = S N(d1) − K e^(−rT) N(d2)
d1
[ln(S/K) + (r + σ²/2) T] / (σ √T)
d2
d1 − σ √T
Topic 1
Meaning, types and importance of derivatives
- Derivative: a contract whose value depends on an underlying asset — shares, indices, currencies, interest rates, commodities, credit.
Forwards
Customised OTC agreements
Futures
Standardised exchange-traded contracts
Options
Right without obligation
Swaps
Exchange of cash flow streams
Others
Warrants, credit derivatives, exotic options
- Importance: risk management (hedging), price discovery, market efficiency and liquidity, lower transaction costs, completing markets.
- Risks: leverage, counterparty risk (OTC), speculation and losses by retail traders — SEBI studies show most individual F&O traders lose money.
Topic 2
Regulatory framework of derivatives in India
- Securities Contracts (Regulation) Act, 1956 recognises derivatives as securities; L.C. Gupta Committee (1998) recommended exchange-traded derivatives; index futures launched in June 2000, options in 2001.
- SEBI regulates equity, currency and commodity derivatives on exchanges (NSE, BSE, MCX); RBI regulates interest rate and OTC forex derivatives.
- Risk controls: SPAN-based initial margins, mark-to-market, position limits, clearing corporation guarantee; 2024 measures for index derivatives — larger contract sizes, fewer weekly expiries, upfront option premium collection.
Topic 3
Forwards and futures compared
Trading
Over the counter, private
On an exchange
Terms
Customised
Standardised lot size and expiry
Counterparty risk
High
Eliminated by the clearing corporation
Settlement
At maturity
Daily mark-to-market
Margin
Usually none
Initial and maintenance margins
Liquidity
Low
High
Example
A trader buys one Nifty futures lot (say 75 units — exchanges revise lot sizes periodically) at 24,000. If Nifty settles at 24,300, profit = 300 × 75 = ₹22,500 (before costs); the gain is credited through daily mark-to-market.
Topic 4
Pricing futures and mark-to-market
Futures price
F = S × e^(rt) (continuous) or S × (1 + r)^t
With dividends
F = (S − PV of dividends) × (1 + r)^t
Currency futures
F = S × (1 + ih) ÷ (1 + if)
Example
Spot ₹1,000, interest 8% a year, 3 months to expiry: F ≈ 1,000 × (1.08)^0.25 ≈ ₹1,019.4.
- Mark-to-market: gains and losses are settled daily; if the margin account falls below the maintenance margin, a margin call requires top-up.
- Basis: spot − futures; converges to zero at expiry.
Topic 5
Speculation, hedging and arbitrage
Hedger
Reduce existing risk
Exporter sells dollar futures to lock the rupee value of receipts
Speculator
Profit from expected price moves; adds liquidity
Buys Nifty futures expecting a rise
Arbitrageur
Riskless profit from mispricing
Buys spot and sells futures when futures are overpriced (cash-and-carry)
Topic 6
Option contracts
- Call gives the right to buy; put the right to sell at the strike price; the buyer pays a premium; European vs American exercise.
- Option value = intrinsic value + time value.
Spot price
Higher spot raises calls, lowers puts
Strike price
Higher strike lowers calls, raises puts
Time to expiry
More time raises value
Volatility
Higher volatility raises both
Interest rate
Raises calls, lowers puts
Dividends
Lower calls, raise puts
Topic 7
The Black–Scholes model
Call
C = S N(d1) − K e^(−rT) N(d2)
Put
P = K e^(−rT) N(−d2) − S N(−d1)
d1
[ln(S ÷ K) + (r + σ² ÷ 2) T] ÷ (σ √T)
d2
d1 − σ √T
- Assumptions: lognormal prices, constant volatility and interest rate, no transaction costs or dividends, European exercise, continuous trading.
- Greeks: delta, gamma, theta, vega, rho — sensitivities used for hedging.
- Binomial model: values options step by step and handles American options.
Topic 8
Put–call parity
Relationship
C + K e^(−rT) = P + S
Discrete form
C + K ÷ (1 + r)^T = P + S
Example
S = ₹100, K = ₹100, r = 10% a year, T = 1 year, call = ₹12. Put = 12 + 100 ÷ 1.10 − 100 = ₹2.91. If the put trades at ₹5, buy the call and bond, sell the put and share — riskless profit.
Topic 9
Option trading strategies
Forwards
OTC; lock future exchange rate
Futures
Exchange-traded; margins; currency futures on NSE/BSE
Options
Call (right to buy), put (right to sell); premium
Swaps
Currency swaps (exchange principal and interest in two currencies); interest rate swaps (fixed vs floating)
- 1Protective put
Own asset + buy put — insurance against fall
- 2Covered call
Own asset + sell call — earn premium, cap upside
- 3Straddle
Buy call + put at same strike — profit from big move either way
- 4Strangle
Buy out-of-the-money call and put — cheaper volatility bet
- 5Spreads
Bull and bear spreads limit risk and reward
Example
An exporter expecting US$ 1 million in 3 months buys a put option at ₹83 with a premium of ₹0.50. If the rupee strengthens to ₹81, the exporter exercises at ₹83 (net ₹82.50); if it weakens to ₹85, the exporter lets the option lapse and sells at ₹85 (net ₹84.50).
Key terms
- Derivative
- Contract whose value depends on an underlying asset
- Cost of carry
- Interest and storage cost of holding the underlying
- Basis
- Spot price minus futures price
- Put–call parity
- Arbitrage relation between call, put, stock and bond
- Delta
- Change in option price for a unit change in the underlying
Quick revision
- Types and importance; Indian regulation (SCRA, SEBI, RBI); L.C. Gupta Committee.
- Forwards vs futures; cost-of-carry pricing; margins and MTM; basis.
- Hedgers, speculators, arbitrageurs.
- Option premium determinants; Black–Scholes; Greeks; binomial.
- Put–call parity; protective put, covered call, straddle, strangle, spreads.
Important exam questions
Practice questions written to the PTU exam pattern for this unit's syllabus: short answers (Section A style) and long answers (Sections B and C style).
Short-answer questions
- Q1.Define a derivative.
- Q2.Who regulates currency and interest rate derivatives in India?
- Q3.State the cost-of-carry formula.
- Q4.What is mark-to-market?
- Q5.State put–call parity.
- Q6.What is a straddle?
Long-answer questions
- Q1.Explain the meaning, types, importance and regulatory framework of derivatives in India.
- Q2.Compare forwards and futures and explain futures pricing.
- Q3.Explain the Black–Scholes model and the determinants of option prices.
- Q4.Explain put–call parity and option trading strategies with examples.
Stuck on this unit?
Message SBS on WhatsApp for help with International Finance and Financial Derivatives, or to ask about studying MBA at Synetic.
