Hedge, speculate, arbitrage — three uses of options

What options are actually for

Options are tools. Like any tool, they have specific uses. Three main ones:

1. Hedging — protect existing positions or future commitments from adverse price moves.
2. Speculation — bet on price direction (or volatility) with leverage.
3. Arbitrage — exploit price discrepancies between related instruments.

Each use has its own strategies and its own risk profile. Knowing which use case you're in matters more than knowing which Greek to track.

1. Hedging — buying insurance

You hold ₩100M of a stock. You're worried it might crash but don't want to sell. Buy a protective put with strike near the current price. If the stock drops, the put gains in value, offsetting some of your loss. If it doesn't drop, the put expires worthless and you've paid the premium.

This is exactly insurance. You pay a small predictable cost (the premium) to cap your downside. It reduces both upside and downside, but the asymmetric reduction is what matters: small predictable cost in normal times, big payoff if the bad scenario happens.

Other hedging examples:

• An airline buys oil futures to lock in fuel costs.
• An exporter sells currency futures to lock in exchange rates.
• A fund manager buys put options on the market to protect against a crash.

Hedging isn't free. It's an insurance premium. The question is whether the protection is worth the cost — usually yes for asymmetric risks you can't otherwise tolerate.

2. Speculation — leveraged directional bets

You think AAPL will rise from ₩200 to ₩250 in 3 months. You can:

• Buy 100 shares: ₩20,000 outlay; if right, gain ₩5,000 (25% return)
• Buy ATM calls: ₩2,000 premium for 100 shares' worth of calls; if right, gain ₩3,000 net (150% return on ₩2,000)

The option strategy gives you the same directional exposure with less capital — that's leverage. But if you're wrong (stock goes nowhere or drops), the option goes to zero, and you lose 100% of your premium. The stock investor still has 100 shares (worth less, but still something).

Options speculation amplifies both gains and losses. The "lottery ticket" mentality is real — many speculative options expire worthless. The few that pay off can pay off huge. The math depends on whether you're right often enough.

3. Arbitrage — exploiting mispricings

Pure arbitrage = guaranteed profit from price discrepancies. Examples:

• A stock trades at $100 in NY and $99 in London (after currency conversion). Buy in London, sell in NY. Profit $1, risk-free.
• Put-call parity arbitrage: if a synthetic position made of calls + bonds equals a different price than the actual underlying + puts, exploit the gap.

Pure arbitrage is rare and short-lived in modern markets — high-frequency firms close gaps within microseconds. Retail investors can't really do this.

What retail can sometimes do: statistical arbitrage — strategies that aren't truly risk-free but exploit historical patterns. Requires expertise; not a starting strategy.

Practical guidance for retail

• Hedging can be valuable when protecting concentrated holdings or specific risks. Cost-aware sizing matters.
• Speculation with options is high-variance. Most retail option speculators lose money over time. Treat it like betting at a casino, not investing.
• Arbitrage is mostly out of reach for retail. Don't pretend otherwise.

The most useful retail option strategies are usually covered calls (income from holdings you already own) and protective puts (insurance on holdings you want to keep). Both are low-complexity, well-understood, and have clear risk profiles.

The takeaway

Three uses for options: hedging (insurance), speculation (leveraged bets), arbitrage (exploit mispricings). Each has its own risk profile. Retail investors are best served by hedging and conservative income strategies; speculative options trading is high-variance and frequently unprofitable. Lesson 8-7 covers two famous cases of options blowing up — LTCM and the 2021 retail option mania.