| Derivative | A financial instrument whose value is derived from the value of an underlying asset. |
| Underlying | The asset whose price determines the derivative's value (Nifty, USD/INR, 10-yr G-sec, Reliance share). |
| Notional | The face value of the derivative position. Used for sizing. NOT the cash exchanged. |
| Forward | Bilateral OTC agreement to trade at a future date at a price fixed today. Customised, no MTM. |
| Future | Exchange-traded standardised forward. Daily MTM, clearing-house-cleared. |
| Option | Right (not obligation) to buy or sell at a strike by expiry. Buyer pays premium. |
| Swap | Exchange of cash flows over time (e.g. interest rate swap). Mostly OTC. |
| Long position | Buyer's side. Profits when underlying rises (for futures and calls). |
| Short position | Seller's side. Profits when underlying falls (for futures); receives premium (for written options). |
| Hedger | Has an existing exposure; uses derivatives to offset it. Goal: reduce risk. |
| Speculator | Takes directional view on price. Uses leverage. Provides liquidity to hedgers. |
| Arbitrageur | Exploits price differences between linked markets. Theoretically risk-free. |
| Market maker | Continuously quotes both bid and ask. Earns the spread. Ensures liquidity. |
| OTC (Over-the-counter) | Bilateral derivative contracts. Customised, no central clearing, counterparty risk lives with the parties. |
| Exchange-traded | Standardised, regulated, clearing-house-cleared. Liquid and counterparty-risk-free. |
| Risk transfer | Core economic function of derivatives — moving risk from those who don't want it to those who do. |
| Price discovery | Futures markets integrate expectations into forward-looking prices that often lead the spot market. |
| Leverage | Control of a large notional with small margin. Amplifies both gains and losses. |
| Market risk | Loss from adverse price moves in the underlying. The risk derivatives are typically used to manage or take. |