Index options are options contracts where the underlying is a stock market index rather than a specific company's stock. Instead of the right to buy or sell shares of one company, an index option gives you the right tied to the value of a basket of stocks — the entire S&P 500, for example.
Index options are widely used by portfolio managers, hedge funds, and institutional investors to hedge portfolios, generate income, or speculate on overall market direction without having to trade individual stocks.
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The most important concept for the Series 7 exam is the settlement method:
| Feature | Equity Options (Stock) | Index Options | |---|---|---| | Settlement | Physical delivery of stock | Cash settlement only | | Exercise | Receive/deliver 100 shares | Receive/pay cash difference | | Style | American (usually) | European (usually) | | Exercise timing | Any time before expiration | At expiration only (most) | | Multiplier | 100 shares per contract | 100 (dollar multiplier) |
Cash settlement means: When an index option is exercised, no shares change hands. Instead, the in-the-money amount is paid in cash.
> Example: You hold an S&P 500 (SPX) call with a $4,800 strike. At expiration, the S&P 500 settles at 4,850. Your option is in the money by 50 points. You receive 50 × $100 = $500 cash per contract. There are no shares to deliver.
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Cash settlement is necessary for index options because it is physically impossible to "deliver" the S&P 500 — that would require delivering shares of all 500 companies in exact proportions. Cash settlement elegantly solves this problem: the in-the-money difference is simply paid in cash.
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Most equity options are American style — the buyer can exercise at any point before expiration. This flexibility is valuable.
Most major index options are European style — the buyer can only exercise at expiration. This means:
OEX is the exception: It is American style and cash-settled. This is a specific exam fact — know that OEX allows early exercise.
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One of the most practical uses of index options is portfolio protection. A portfolio manager who holds a diversified portfolio that mirrors the S&P 500 can buy S&P 500 puts (SPX puts) to protect against a market decline — without selling any holdings.
How it works:
> A portfolio manager oversees a $100 million equity portfolio that closely tracks the S&P 500. The S&P 500 is at 4,800. The manager is concerned about a 10% market correction over the next 3 months due to an upcoming Federal Reserve meeting. > > The manager buys S&P 500 (SPX) puts with a 4,800 strike. If the market falls to 4,320 (a 10% drop), each put is worth at least 480 points × $100 = $4,800 cash. Multiply by the number of contracts (sized to match the portfolio), and the puts offset much of the portfolio's loss. > > If the market rises instead, the puts expire worthless (the manager loses the premium) but the portfolio gains — a good trade-off.
Why index puts instead of individual stock puts? More efficient — one contract covers broad market exposure. Lower cost than buying puts on each individual holding. Directly targets systematic (market-wide) risk rather than company-specific risk.
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This is a key exam distinction:
Certain index options — specifically broad-based index options like SPX — receive preferential tax treatment under Section 1256 of the Internal Revenue Code:
This is called the 60/40 rule or "Section 1256 treatment."
By contrast, equity options are treated as short-term gains if held less than one year, and long-term if held more than one year (regular holding period rules).
> Tax example: An investor makes $10,000 profit on SPX options held for 2 months. > - $6,000 (60%) qualifies as long-term capital gain (lower rate, say 15%) > - $4,000 (40%) is short-term (ordinary income rate, say 37%) > - Blended effective tax rate on the gain is significantly lower than if treated entirely as short-term
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A detail that appears on the exam: index options can settle at the open or the close of the last trading day.
This distinction can cause surprises — an investor holding an AM-settled SPX option goes to sleep at Thursday's close, then wakes up to find the settlement price is different from what SPX closed at Friday morning because individual stocks gapped at the open.
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Quiz Questions:
Q1. An investor holds 1 SPX call with a $4,700 strike. At expiration, the S&P 500 index settles at 4,780. What happens upon exercise?
A) The investor receives 100 shares of S&P 500 component stocks B) The investor receives $8,000 in cash C) The investor receives the 100 stocks comprising the index pro-rata D) The investor receives $7,000 in cash
Answer: B — SPX options are cash-settled. The in-the-money amount = 4,780 − 4,700 = 80 index points. Cash received = 80 × $100 multiplier = $8,000. No shares are delivered with index options — cash settlement is the defining feature (A and C). $7,000 would be 70 points × $100 — incorrect arithmetic (D).
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Q2. Which of the following BEST describes why portfolio managers use index put options?
A) To generate premium income by selling covered calls on their holdings B) To speculate on individual stock declines within the portfolio C) To protect a diversified equity portfolio against broad market declines using a single hedge D) To convert their stock positions into fixed-income equivalents
Answer: C — Index puts provide efficient, broad-market downside protection for a diversified portfolio. Instead of buying puts on every individual holding (expensive and complex), the manager buys index puts to hedge systematic (market-wide) risk in one transaction. Selling covered calls generates income but does not protect against large declines (A). Index options hedge the whole market, not individual stocks (B). Options do not convert equity risk to fixed income (D).
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Q3. Which of the following index options uses AMERICAN-style exercise?
A) SPX (S&P 500) B) NDX (Nasdaq-100) C) OEX (S&P 100) D) RUT (Russell 2000)
Answer: C — OEX (S&P 100) is a notable exception — it is American-style and allows early exercise. SPX, NDX, and RUT are all European-style index options and can only be exercised at expiration. This is a classic Series 7 trick question.
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Q4. An investor makes a $20,000 profit on S&P 500 (SPX) index options that were held for only 45 days. Under Section 1256, how will this gain be taxed?
A) The full $20,000 is taxed as a short-term capital gain because it was held less than one year B) The full $20,000 is taxed as a long-term capital gain because SPX options receive special treatment C) $12,000 is taxed as long-term capital gain and $8,000 is taxed as short-term capital gain D) SPX options are tax-exempt as a type of index security
Answer: C — Under Section 1256 (the 60/40 rule), broad-based index options like SPX are taxed 60% long-term and 40% short-term regardless of holding period. $20,000 × 60% = $12,000 long-term; $20,000 × 40% = $8,000 short-term. The holding period does not determine the split (A is the rule for equity options, not index options). Not all gains are long-term (B). Index options are not tax-exempt (D).
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Q5. How does the settlement of an equity option differ from the settlement of an index option?
A) Equity options settle in cash; index options require delivery of the index components B) Index options settle in cash; equity options require delivery of the underlying stock C) Both equity and index options require physical delivery of the underlying D) Both equity and index options settle in cash for convenience
Answer: B — This is the fundamental distinction. Standard equity (stock) options settle through physical delivery of 100 shares per contract. Index options settle in cash equal to the in-the-money amount times the multiplier, because it is impossible to deliver an entire index. A is the opposite of reality. C is wrong because index options are cash-settled. D is wrong because equity options physically deliver stock (unless the investor closes the position in the market before exercise).