Futures & Options Without the Mystery

18 MIN READ · BY MAHENDIRAN, NISM-CERTIFIED TRADER

Derivatives have a reputation: complicated, dangerous, the place where retail accounts go to die. The second part is often true — but not because the instruments are complicated. It's because most people trade them without knowing what they actually bought. This lesson removes the mystery. It will not make you an options trader; it will make you someone who can't be fooled about what F&O really is.

A derivative is a contract, not a stock

When you buy a share, you own a piece of a company. When you trade a derivative, you own a contract whose value is derived from something else — a stock, an index, gold, a currency. You never own the underlying thing. You own an agreement about its price, with an expiry date attached. That expiry date changes everything: shares can be held through a bad month; contracts cannot. Time is part of the position.

Futures: a locked-in price, both ways

A futures contract is an agreement to buy or sell the underlying at a fixed price on a fixed date. Profit and loss move one-for-one with the underlying — if you're long a future and the index rises 1%, you gain roughly 1% of the contract's full value. And here is the part that matters: you control that full value by depositing only a margin — a fraction of it.

Leverage doesn't create edge — it multiplies whatever you already have, including mistakes. Recall Lesson 04: if 1R for your account is ₹2,000, that number does not change because an instrument lets you risk more. Futures demand wider respect for position sizing, not less.

Options: rights, not obligations — and a price for time

An option is the right — not the obligation — to buy (a call) or sell (a put) the underlying at a chosen price (the strike) before expiry. For that right you pay a premium. The buyer's loss is capped at the premium; the seller collects the premium and carries the larger risk.

The premium has two parts, and confusing them is the classic beginner error:

• Intrinsic value — what the option would be worth if exercised right now.
• Time value — everything else: payment for the possibility that the underlying moves before expiry.

Time value melts every single day — faster as expiry approaches. This is time decay, and it means an option buyer can be right about direction and still lose money, because the move came too slowly or too late. Buying cheap out-of-the-money options because "it only costs ₹500" is not a small trade — it's a bet that a large move happens within a deadline, and the odds of that are priced in far more accurately than beginners assume.

Who is on the other side — and why they're happy to be there

From Lesson 01: every contract has a counterparty. In F&O, much of the other side is hedgers — funds insuring portfolios with puts, businesses locking currency rates — and professional option sellers harvesting time decay with defined-risk structures. They aren't gambling against your direction; they're running a different business on a different clock. Understanding this cures the fantasy that options are a lottery ticket someone forgot to price properly. They are priced. Ruthlessly.

The three rules before any first F&O trade

1. Size by risk, not by margin allowed. The exchange telling you that you can control ₹10 lakh is not advice that you should.
2. Know your maximum loss before entry — in rupees. For option buyers it's the premium. For futures and option sellers, it must be a stop you've calculated, because the contract itself has no floor.
3. Never hold leveraged, expiring positions through binary events without a plan (Lesson 06). Expiry plus event plus leverage is how accounts end in a day.

Futures pricing: premium, discount and the rollover rhythm

A future rarely trades exactly at the underlying's price. The gap (the basis) reflects carrying cost — normally the future trades slightly above spot (premium), converging to spot as expiry approaches. Two practical reads: when a future flips to trading below spot (discount), positioning is unusually bearish — worth noting even if you never trade futures. And every month, positional traders must roll over — close the expiring contract and open the next one — paying the spread twice plus the price difference between contracts. That rollover cost is part of any multi-month futures plan, and the market-wide rollover percentage published near expiry is itself a sentiment reading: how much of the open interest was conviction, and how much gave up?

Three Greeks in plain language

You met time decay; it has a name — theta. Two siblings matter enough for this stage:

• Delta — how much the option moves per ₹1 of underlying move. Deep in-the-money options behave like the stock (delta near 1); far out-of-the-money lottery tickets barely respond (delta near 0.1) — which is why the "cheap" option often does nothing even when you're right.
• Theta — the daily rent you pay as a buyer, collected by the seller. Accelerates violently in the final two weeks.
• Vega — sensitivity to implied volatility. This is the IV-crush lever from Lesson 06: before events, vega inflates premiums; after, it deflates them regardless of direction.

Defined-risk structures: the grown-up way to buy direction

Once the Greeks are real to you, spreads become obvious. A bull call spread — buy one call, sell a higher-strike call — costs less than the naked call (the sold option finances part of it), suffers less theta and vega damage, and has a known maximum loss and maximum gain from the moment of entry. You give up the lottery tail; you gain a structure whose risk is defined by design rather than by your discipline. For a trader still building that discipline, defined-risk structures are not a compromise — they are the professional default.