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On this page

  • 1. Features of the US Options Market
  • 2. American vs European: Why the Exercise Difference Matters in Practice
  • 3. Delivery and Settlement
  • 4. How to Read an Option Chain
  • Monthly vs Weekly Options
  • 5. Core Strategies in Practice
  • 1. Covered Call — collecting rent (owning 100 SPY)
  • 2. Protective Put — insurance (cost vs black swans)
  • 3. Cash-Secured Put — getting paid to buy (margin and assignment flow)
  • 4. Bull Call Spread
  • Strategy Quick Reference
  • 6. Rules Unique to US Options
  • Options Permission Tiers (the Tier 1-4 basics)
  • Margin Rules
  • Tax Basics (non-residents; defer to professionals)
  • Leverage and Blow-Ups: A Naked Short Force-Liquidated
  • 7. The Classic Ways to Die
  • ⚠️ Risk Warning

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04 · Stocks

Stocks are the asset class ordinary people encounter most: A-shares, HK stocks, and US stocks — three markets, three set

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Lesson 06/6 / 8 lessons

06 · US Stock Options Primer

A hands-on guide to US stock Options — reading the option chain, four beginner strategies with worked numbers, US permission tiers, margin and tax rules, and the classic ways to blow up

📖 ~9 min read
On this page▾
  • 1. Features of the US Options Market
  • 2. American vs European: Why the Exercise Difference Matters in Practice
  • 3. Delivery and Settlement
  • 4. How to Read an Option Chain
  • Monthly vs Weekly Options
  • 5. Core Strategies in Practice
  • 1. Covered Call — collecting rent (owning 100 SPY)
  • 2. Protective Put — insurance (cost vs black swans)
  • 3. Cash-Secured Put — getting paid to buy (margin and assignment flow)
  • 4. Bull Call Spread
  • Strategy Quick Reference
  • 6. Rules Unique to US Options
  • Options Permission Tiers (the Tier 1-4 basics)
  • Margin Rules
  • Tax Basics (non-residents; defer to professionals)
  • Leverage and Blow-Ups: A Naked Short Force-Liquidated
  • 7. The Classic Ways to Die
  • ⚠️ Risk Warning

For the basic concepts of Options (rights vs obligations, the four elements, in/out of the money, the Greeks), read Options Basics↗ first. This article upgrades that base toward US practice: what the world's most active options market looks like, how to read an option chain, how to run four beginner strategies (with worked numbers), the US-only permission tiers/margin/tax rules, and the most common ways to die. Do not touch any strategy here before the basics of Options are fully digested.


1. Features of the US Options Market

FeatureDescription
The world's most activeUnder OCC statistics, US options volume has long exceeded half of the global total
Underlying typesSingle-stock Options (AAPL, TSLA, etc.), index Options (SPX S&P 500, NDX Nasdaq 100), ETF Options (SPY, QQQ)
Contract spec1 contract = 100 shares (index Options cash-settle; no share count)
Expiry cadenceMonthly Options (third Friday of each month) + weekly Options (every Friday) side by side
Market-maker depthBid-ask spreads on benchmark contracts are razor-thin (often USD 0.01-0.05); the world's deepest liquidity
Directional freedomTwo-way trading: buy or sell, naked selling allowed (with permission) — none of the strict seller restrictions of A-shares
TypeExamplesExercise styleSettlement
Single-stock OptionsAAPL, TSLAAmericanPhysical delivery of shares
ETF OptionsSPY, QQQAmericanDelivery of ETF units
Index OptionsSPX, NDXEuropeanCash-settled (only the difference changes hands, no shares delivered)

2. American vs European: Why the Exercise Difference Matters in Practice

TypeInstrumentsFeature
American OptionsSingle-stock and ETF OptionsExercisable early on any trading day before expiry
European OptionsIndex Options (SPX etc.)Exercisable only on the expiry date itself

This is not an academic distinction; it hits live trading in three direct ways:

ScenarioAmerican (single stock/ETF)European (index)
Surprise exercise against the sellerPossible: near ex-dividend dates, holders of in-the-money calls often exercise early for the dividend, forcing the seller to deliver sharesNot possible: exercise only at expiry; you hold in peace
Handling deep in-the-money positionsMind the tail risk of "exercised at any moment"Held to expiry, auto-settled; the rules are certain
Locking in profit earlyExercise anytime (though closing the position is usually the cheaper choice)Close only; no early exercise

One-line conclusion: sellers of single-stock/ETF Options must stay alert around ex-dividend dates; index Options (SPX) have no early-exercise problem, but a single contract carries enormous notional value (on the order of USD 60,000) — not the beginner's first learning instrument.


3. Delivery and Settlement

StepRules (per your broker's and the OCC's latest)
Options trade settlementSame as stocks, T+1 settlement (US markets went fully T+1 in May 2024)
Post-exercise deliverySingle-stock/ETF Options exercised → T+1 share delivery: exercising a call buys the shares, exercising a put sells the shares
Cash-settled productsIndex Options settle the difference at the closing settlement price on expiry; cash hits the account directly
Automatic exerciseOptions in the money beyond a threshold are auto-exercised at expiry (generally ITM ≥ $0.01, broker-dependent); close before expiry if you do not want exercise
Early exerciseAmerican-option buyers may submit exercise instructions on any trading day

The vast majority of traders never exercise — closing before expiry is the norm. Exercise happens to two kinds of people: those who genuinely want to buy/sell the shares at the strike, and those who forgot to close.


4. How to Read an Option Chain

The option chain is the main screen of options trading. Take SPY: each row = the call and the put at one strike for one expiry:

FieldMeaningHow to read it
StrikeThe agreed buy/sell price at expiryIn/at/out of the money at a glance
ExpiryThe date the right diesMonthly = third Friday; weekly = every Friday; plus LEAPS long-dated Options (up to ~2-3 years)
Bid / AskBest buy / best sell priceBuyers fill at the Ask, sellers at the Bid
SpreadAsk − BidThe wider the spread, the worse the liquidity; in-the-money and front-month benchmark contracts are usually razor-thin
Volume / OIToday's volume / open interestLiquidity check: low volume + low OI = hard in, hard out
IVImplied volatilityThe "how expensive" thermometer; spikes before earnings
DeltaHow much the option's price moves per USD 1 of the underlyingDirectional sensitivity: an at-the-money call ≈ 0.5

Monthly vs Weekly Options

TypeExpiryCharacteristicsFor whom
Monthly OptionsThird Friday of each monthBest liquidity, gentle Theta decay, the benchmark contractsPosition strategies, covered calls, spreads
Weekly OptionsEvery FridayCheap, brutally fast Theta decay, the lottery ghettoShort-term traders; beginners stay away

Three steps to picking a contract: fix the expiry first (30-90 days recommended — time value stays manageable without excess decay) → then the strike (directional view + room for error) → finally check the spread and OI to confirm liquidity.


5. Core Strategies in Practice

All prices below merely illustrate the math and are not trading advice of any kind. Assume SPY at USD 600; every strategy uses "1 contract = 100 shares".

1. Covered Call — collecting rent (owning 100 SPY)

Assume you own 100 shares of SPY (at 600) and expect a month of mostly sideways movement:

  • Sell 1 call at strike 620, expiring in 30 days, premium 4.00
  • Premium income = 4.00 × 100 = USD 400 (credited immediately; hold to expiry or get assigned)
At expiryResult
SPY < 620The option expires worthless; keep the 400 and keep holding the shares
SPY ≥ 620Assigned: sell at 620; total return = 400 + (620-600)×100 = USD 2,400 (capped)
  • Essence: trading "upside" for "certain cash income" — about 0.7% per month (400 / 60,000), roughly 8% annualized (assuming the underlying does not rally hard)
  • The biggest cost: if SPY surges (say to 700), you make only 2,400 instead of 10,000+ — the missed rally

2. Protective Put — insurance (cost vs black swans)

Assume you own 100 shares of SPY (at 600), fear a crash, but do not want to sell:

  • Buy a put at strike 570, 60 days out, premium 5.50
  • Cost = 5.50 × 100 = USD 550 (the premium, like an insurance fee)
ScenarioResult
SPY rises insteadLose the 550 premium; keep the stock's gains
SPY falls to 570The put starts paying; max loss locked = (600-570)×100 + 550 = USD 3,550
SPY crashes 20% in a single week (a March-2020-style move)The stock loses 12,000, the put pays back nearly 10,000 — total loss still locked within 3,550
  • Essence: small money buys "disaster insurance" — a slow bleed in calm times (Theta charges daily), a lifeline in a black swan
  • Common mistake: when insurance is too dear, picking a further out-of-the-money put (cheaper but thinner protection), or shortening the term (lower premium, shorter coverage window)

3. Cash-Secured Put — getting paid to buy (margin and assignment flow)

Assume you want to buy SPY at 580 (now 600) while collecting some premium:

  • Sell a put at strike 580, 30 days out, premium 3.00
  • The broker freezes USD 58,000 of margin (strike × 100); selling the put pays 300
At expiryResult
SPY ≥ 580The option expires worthless; keep 300 (about 0.5% on the frozen margin — significant annualized)
SPY < 580Assigned: buy 100 SPY at 580; effective cost = 580 - 3.00 = USD 577/share
  • Assignment flow: auto-exercised after the expiry close; the shares settle T+1
  • Essence: "your target buy price + rent if it never gets there" — like resting a limit buy order that pays you
  • Note: if the stock keeps falling after assignment, you carry the holding loss — selling puts is "taking delivery", not a "bottom-picking magic tool"

4. Bull Call Spread

Assume SPY at 600; you expect a moderate rise and find a naked call too expensive:

  • Buy the 610 call (premium 12.00)
  • Sell the 630 call (premium 5.00)
  • Net outlay = (12.00 - 5.00) × 100 = USD 700
At expiryResult
SPY < 610Both expire worthless; lose the full 700 (max loss)
SPY between 610-630Grind from breakeven into profit
SPY ≥ 630Max profit = (630-610)×100 - 700 = USD 1,300
  • Essence: trading "capped gains" for "half the cost"; both risk and reward are defined — the best fit for a moderately bullish view
  • Versus a naked call: cost drops from 1,200 to 700, and breakeven sits lower too

Strategy Quick Reference

StrategyConstructionFitsMax risk
Covered CallStock + short callCollecting rent in sideways marketsUpside capped (missed rally)
Protective PutStock + long putInsurance for holders afraid of a crashPremium bleeding over time
Cash-Secured PutCash + short putWanting entry + premium incomeThe stock keeps falling after assignment
Bull Call SpreadLong lower call + short higher callModerately bullishMax loss = net premium

6. Rules Unique to US Options

Options Permission Tiers (the Tier 1-4 basics)

US brokers approve options in tiers; the naming varies slightly by broker (some use 0-5). Follow your broker's latest scheme:

TierAllowed strategiesThreshold (rule-of-thumb)
Tier 1Covered Call, Cash-Secured PutLow: stock/cash is enough; beginner-friendly
Tier 2Long Call / Put buyingRequires an options knowledge questionnaire and some experience
Tier 3SpreadsHigher knowledge and asset requirements
Tier 4Naked Call / Put sellingHighest bar: extensive experience, higher net worth, extra broker scrutiny

Practical meaning: beginners usually start with only Tier 1 — which is in fact protection: naked selling and spreads demand deeper understanding and a thicker capital cushion.

Margin Rules

RoleMargin requirement
Option buyerThe premium only; no margin
Cash-secured sellerStrike × 100 in frozen cash (the "secured" in cash-secured — what makes taking delivery safe)
Naked seller (margin account)Per the broker's formula (roughly a fraction of notional + premium); must keep topping up as the market moves against you
Portfolio marginFor institutions/whales, computed off a portfolio-wide risk model; effectively unavailable to retail

Margin shortfall → forced liquidation: the broker may force-close positions once floating losses eat the margin, and forced closes tend to fill at the worst prices.

Tax Basics (non-residents; defer to professionals)

  • For non-resident aliens (NRAs filing W-8BEN): US capital gains are generally not taxed in the US — the spread from closing or exercising Options usually does not touch US income tax
  • But the following may be withheld or owed:
    • Dividends on shares acquired via exercise → 30% dividend withholding
    • Under certain conditions, income from selling options can be treated as a "dividend equivalent" and withheld at 30% (classically, high-Delta strategies near ex-dividend dates)
    • Spending over 183 days in the US / becoming a US tax resident triggers entirely different rules
  • ⚠️ Cross-border tax is extremely complex; this is rule-of-thumb only — defer entirely to professional tax advice and the latest IRS rules

Leverage and Blow-Ups: A Naked Short Force-Liquidated

text
Account: USD 20,000
Trade: naked-sell 3 TSLA calls at strike 100, premium 2.00 (collect 600)
Setup: TSLA at 95, "it can't possibly reach 100"

Earnings land, TSLA rockets to 150:
  Floating loss = (150 - 100) × 3 × 100 = USD 15,000
  Margin shortfall → broker force-closes (buys back the 3 calls at market)
  Realized loss ≈ USD 14,000+ (far beyond the premium collected; 70% of the account)
  • In extreme moves (short squeezes, earnings blow-ups), a naked short's loss is theoretically unlimited; a single forced close can swallow the whole account

💀 Naked-selling losses are theoretically unlimited — one forced close swallows the account

In extreme moves (short squeezes, earnings blow-ups), naked-selling losses are theoretically unlimited; a single forced close can swallow the whole account — if the underlying keeps rocketing and the broker cannot close in time, the account can go negative. Never sell naked without ample margin and risk capacity.

  • If the underlying keeps rocketing and the broker cannot close in time, the account can end up owing money (negative balance)

7. The Classic Ways to Die

DeathTypical sceneEnding
Naked call meets a moonshotEarnings, a squeeze (GME 2021), a stock doubling in a dayUnlimited loss; years of premium gone in days, possibly owing money
Lottery weeklies going to zeroBuying cheap options 1-2 days from expiry (the USD 0.05 lottery ticket)Theta devours them; 95%+ expire worthless; nine small wins, one total loss
Illiquid chainsDeep out-of-the-money, weekly backwaters, pre/after-hours tradingEnormous bid-ask spreads; a round trip loses 30-50% to the spread alone
IV crush double-killBuying calls before earnings on direction; direction right, volatility collapses after"Right on direction, losing anyway"
Forgetting the expiry dateHolding into expiry without closingAuto-exercise delivers/takes shares; surprise positions and tax bills

Summary of deaths: buyers die of time and volatility; sellers die of extreme moves — both bypass your directional call. The first lesson retail traders must learn is "respect".

💀 The two great option deaths: buyers die of time and volatility, sellers die of extreme moves

Buyers die of time and volatility; sellers die of extreme moves — both bypass your directional call. The first lesson retail traders must learn is "respect": even a correct directional call can lose money to time or volatility.


⚠️ Risk Warning

⚠️ Risk Warning

Options are one of the most complex instruments in risk shape and the biggest source of retail losses; this article stresses seller risk above all:

① Seller risk (the biggest minefield): losses on naked Call/Put selling are theoretically unlimited. A single black swan (earnings blow-up, squeeze, circuit breaker) can wipe out years of premium income and leave you owing the broker money. Cash-Secured Puts are cash-collateralized and cannot blow up into debt, but the loss after assignment when the stock keeps falling is just as real. Never sell naked without ample margin, hedging tools, and risk capacity.

② Buyer risk: time decay (Theta) bleeds daily, and most Options expire worthless; the IV collapse after events like earnings produces "right on direction, losing anyway". Lottery weeklies and deep out-of-the-money tickets are the surest ways to lose money.

③ Rule risk: permission tiers, margin formulas, forced-liquidation rules, and exercise/settlement details all defer to your broker's and the OCC's latest rules; cross-border tax defers to professional tax advice.

This article is education and worked examples only; example prices are not investment advice of any kind. Complete your broker's options investor education and risk assessment before considering live trading.

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  • →01 · Stock Basics
  • →02 · A-Share Trading Rules
  • →03 · HK and US Stocks
  • →04 · Stock Analysis Methods
  • →05 · ADR and Cross-Border Listing

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