Buying US Stock Options
Calls, puts, spreads — and the math that determines whether your trade actually makes money even when you're right about the direction.
Strategy builder
Pick a structure, set the spot price, see the payoff at expiry. Premiums are estimates (~4% ATM extrinsic), not live quotes.
Bullish. Pay premium for upside above the strike.
| Side | Type | Strike | Premium (est.) | Cost / Credit |
|---|---|---|---|---|
| Buy | Call | 100 | $4.00 | $-400 |
Options 101 — the only definitions you need
If you can explain these to a friend, you can trade them.
- Call option: The right (not the obligation) to buy 100 shares at the strike price before expiry. You buy calls when you're bullish.
- Put option: The right to sell 100 shares at the strike price before expiry. You buy puts when you're bearish or hedging.
- Strike: The price you can exercise at. Premium: What you pay to own the contract. DTE: Days till expiry.
- Multiplier of 100: A $2.50 premium on 1 contract costs $250 and controls 100 shares.
The four Greeks that matter
Direction is only one of four things moving your P&L.
- Delta (direction): How much the option moves per $1 in the stock. ATM calls are ~0.50; deep ITM ~1.00; OTM closer to 0.
- Theta (time decay): How much value you lose per day, all else equal. Accelerates in the last 30 days. The enemy of long options buyers.
- Vega (volatility): How much the option gains/loses per 1-point change in IV. The reason a "right direction" trade can still lose money.
- Gamma (acceleration): How fast delta changes. Highest near the strike and near expiry — why 0DTE moves so wildly.
IV crush — the silent killer
If you only remember one thing about earnings options.
Before earnings, implied volatility (IV) inflates because the market expects a big move. The moment the result is announced, IV collapses — often by 30–60% — regardless of direction.
Example: You buy an ATM call for $5.00 with IV at 85%. The stock moves up 4% on a beat (smaller than the 7% implied move). The next morning IV drops to 35% and your call is worth $3.20 — a 36% loss despite being right on direction.
Long single options into earnings need a move bigger than the implied move just to break even. Spreads and longer-dated options reduce this drag.
Structures every options buyer should know
Start with the first three. Add the others as conviction grows.
Long call
Bullish — you expect a meaningful move up before expiry.
- Setup
- Buy a call 30–60 DTE, slightly OTM or ATM. Pay the premium.
- Max loss
- Premium paid
- Max gain
- Unlimited
Long put
Bearish or hedging a long stock position.
- Setup
- Buy a put 30–60 DTE. Often paired with shares as portfolio insurance.
- Max loss
- Premium paid
- Max gain
- Strike − premium (down to $0)
Bull call spread
Bullish but want to cut premium and IV exposure.
- Setup
- Buy lower-strike call, sell higher-strike call same expiry. Net debit.
- Max loss
- Net debit paid
- Max gain
- Width of strikes − debit
Bear put spread
Bearish, defined-risk version of buying a put.
- Setup
- Buy higher-strike put, sell lower-strike put same expiry. Net debit.
- Max loss
- Net debit paid
- Max gain
- Width of strikes − debit
Long straddle
Big move expected, direction unknown (earnings, FDA, M&A).
- Setup
- Buy ATM call + ATM put same expiry. Profits if move > combined premium.
- Max loss
- Both premiums (rare to lose 100%)
- Max gain
- Unlimited above, large below
LEAPS call
Bullish 12–24 months out — stock replacement at a fraction of cost.
- Setup
- Buy a deep-ITM call with 1–2 years until expiry. Delta ≈ 0.80+.
- Max loss
- Premium paid
- Max gain
- Tracks stock with leverage
Position sizing for options buyers
Options are leverage. Size accordingly.
- Risk 0.5–1% of account per options trade. A 100% loss on a single contract should not change your life.
- Never bet money you "need." Roughly 70–80% of OTM options buyers lose on any given trade. The structure pays only when you're spectacularly right.
- Avoid stacking expiry weeks. Five contracts all expiring Friday is one bet, not five.
- Treat premium as already spent. Don't average down to "lower your cost basis" on a losing option. The clock is still ticking.
Timing & expiry selection
- 30–60 DTE is the sweet spot for directional bets — enough time for the thesis to play out, low enough gamma/theta drag.
- 0DTE / weeklies are gambling instruments unless you have a specific intraday edge. The 70% expire worthless is not a meme — it's the math.
- Buy options when IV rank is low (<30). Sell premium structures when IV rank is high (>50). Buying high-IV calls into earnings is paying retail for vol that's about to crush.
- Close at 50% profit on long premium. Letting winners run sounds romantic; theta will erase the gain faster than the stock can extend it.
Where most retail buyers lose money
- Buying weekly calls the morning of earnings "because the chart looks good."
- Confusing a beat with a trade — IV crush punishes anything less than the implied move.
- Holding losing options to expiry, hoping for a "miracle Friday."
- Adding to losers ("doubling down") on time-decaying instruments.
- Trading single-leg options in low-volume names with $0.10+ bid/ask spreads.
Risk controls that actually save options buyers
- Define max loss before every trade. For long options, max loss = the premium. Don't risk more than 1% of account.
- Prefer spreads to naked long options for earnings. Spreads cap your vega exposure and slash the cost.
- Use limit orders, always. Options spreads can be 5–15% wide; market orders bleed money.
- Have an exit rule on time, not just price. "If I haven't been right in 14 days, I'm out" beats "I'll see what happens."
Options trading is not suitable for all investors. You can lose 100% of your premium in days. This page is educational only — not a recommendation. Read the OCC's "Characteristics and Risks of Standardized Options" before trading, and consult a licensed advisor.