Introduction

Welcome to Option Theory, the foundation every option strategy in this chapter is built on. Hedging, speculating, and spreading with options all reduce to one idea: the risk and reward of a long option versus a short option. Get that asymmetry straight here and the strategy units become reasoning, not memorization.

Exam Weight: Part 1 (Market Knowledge) spans ~71% of the exam across Chapters 1-7 combined; the National Futures Association (NFA) does not publish per-unit weights.

What You'll Learn

In this unit, you'll cover:

• The two parties and one premium: how the buyer holds a right while the writer holds an obligation, and why the premium changes hands up front at the trade
• The options-on-futures twist: why exercising an option here delivers a futures position, not shares of stock, and which side ends up long or short
• Long options (the buyer): limited, prepaid risk that can still be lost in full, against a large return, with no margin to post
• Short options (the writer): a capped premium as the maximum gain against an open-ended loss, with performance-bond margin required

Why This Matters

Every option position on this exam is one of two roles: you either bought the option or you wrote it. The whole risk profile flips depending on which. A buyer trades a known, small loss for a large, uncertain gain; a writer trades a large, uncertain loss for a known, small gain. That single sentence is the theory the strategy units keep applying, so anchoring on it now pays off through the rest of the chapter.

One Series 3 detail runs through everything: these are options on futures contracts, not on stock. Exercising one opens a futures position, which changes what the writer's risk actually looks like and ties this unit back to how futures positions are margined.

Two Parties, One Premium

Every option has exactly two sides, and the premium is the only thing that changes hands when the trade is struck.

• The buyer (also called the holder or the long) pays the premium. The buyer acquires a right: a call is the right to go long the underlying at the strike price; a put is the right to go short the underlying at the strike. The buyer is never obligated and exercises only when it pays to.
• The writer (also called the seller, the grantor, or the short) receives the premium. The writer takes on an obligation: if the buyer exercises, the writer must take the other side at the strike, wherever the market has moved. The writer cannot choose; assignment is not optional.

That buyer-right versus writer-obligation split is the entire source of the risk asymmetry you'll see in the next two sections. The buyer's downside is capped by choice (walk away, lose only the premium), while the writer's downside is open because the writer cannot walk away.

Think of it this way: the buyer is paying for a decision they get to make later, and the worst that happens is they decide not to use it and lose what they paid. The writer sold that decision for cash, and now has to live with whatever the buyer decides.

The Underlying Is a Futures Contract

On this exam the underlying of an option is a futures contract, not 100 shares of stock. That changes what exercise delivers.

• Exercising does not move shares or swap cash for stock. It opens a futures position at the strike price for the buyer, and the mirror-image futures position for the assigned writer.
• Exercising a call delivers a long futures position at the strike to the buyer; the assigned writer receives the matching short futures position at the strike.
• Exercising a put delivers a short futures position at the strike to the buyer; the assigned writer receives the matching long futures position at the strike.

Once exercised, both sides now hold a futures position and post futures performance-bond (margin) on it going forward. That is why the writer's risk in this unit behaves like a futures risk, and why the call writer's exposure has no ceiling.

Memory Aid: Call the future up to you (you go long); put the future down on someone else (you go short). The holder always gets the position the option name promises; the writer gets the opposite.

Exam Tip: Gotchas

• Exercise yields a futures position, not stock. These are options on futures. An answer that says exercising a call "delivers shares" or "buys the stock" is using the equity-options model and is wrong for Series 3.
• A put holder goes short, not long. Exercising a put makes the holder short the future at the strike (the writer is assigned long). A choice that says the put holder "buys the underlying" has it backwards; a put is the right to sell.

Let's start with the long side: the option buyer.