Chapter 13: Step-by-Step — Buying Calls
Core idea
Buying a call is mechanically simple, strategically demanding
Modern brokerage platforms make placing a long-call order a five-click affair. That ease is deceptive. The hard part of buying calls is not the order entry; it is the requirement to be right about direction, timing, and price all at once, while paying a spread that puts you in the red the moment your order fills.
This chapter walks through the actual click-path — ticker, action, quantity, order type, expiration, strike, limit price, review, submit — using a Boeing example. But before any of that, it forces you to confront the structural disadvantages a retail call buyer faces.
The three risks you accept the moment you click buy
- Total loss of premium. A long call’s worst case is 100% loss of the cash you paid. Unlike stock, there is no floor that gradually drains; there is an expiration date after which the contract is worthless.
- The triple-correct requirement. You must be right on direction (which way), magnitude (by how much), and timing (by when). Most directional traders only think about #1.
- The professional asymmetry. Market makers and institutional desks have better software, lower fees, and a structural information edge. You are crossing a spread to play in their pool.
Why it matters
The spread is a tax you pay on entry
The bid-ask spread on options is much wider in percentage terms than on stocks. If the bid is $1.00 and the ask is $1.10, you typically pay $1.10 to enter and would receive $1.00 to exit immediately — a 9% loss before the underlying stock moves a penny. The option must climb enough to overcome that built-in deficit before you see your first dollar of real profit.
This is why limit orders are mandatory when trading options. A market order in a thin options market lets the market maker fill you at the worst price they can justify. A limit order lets you bid somewhere between the bid and ask, often closer to the midpoint, and shave that entry tax meaningfully.
Contracts, not shares
One option contract controls 100 shares of the underlying. A quoted premium of $2.81 means $281 per contract. The most expensive beginner mistake on the order screen is typing “100” in the quantity field thinking you are buying 100 shares — you are actually committing to options on 10,000 shares and a $28,100 outlay. Always confirm the quantity field is in contracts.
Key takeaways
Key takeaways
- The maximum loss on a long call is 100% of the premium paid — known and capped, but real.
- You need three things to align: direction, magnitude, and timing. Two out of three usually loses money.
- Always use limit orders on options — the bid-ask spread is wide enough to make market orders punitive.
- The bid-ask spread is an immediate paper loss at fill; the option must move enough to overcome it.
- Quantity is in contracts, not shares — one contract controls 100 shares. Check this field twice.
- Buy-to-open opens a long position; sell-to-close exits it. Picking the wrong action is the most common order-entry error.
Mental model
Read it as: The order screen is a checklist, not an improvisation. Each field has a default-safe answer (buy-to-open, contracts, limit, day, midpoint). The only place you really decide is the strike and expiration — everything else is hygiene, and skipping it is how beginners blow up.
Practical application
- Enter the ticker — type the symbol for the underlying stock (e.g., BA for Boeing). Confirm the quote that appears matches the company you intended.
- Open the option chain and locate the row for your target strike and expiration. Note the bid, ask, and the size of the spread.
- Select Buy to Open — this opens a new long-call position. Sell-to-open is for sellers; buy-to-close is for unwinding short positions you already sold.
- Enter the quantity in contracts — one contract = 100 shares. Beginners should rarely exceed 10 contracts on a single trade.
- Choose Limit order — never market. Set the limit at or just above the midpoint of the bid-ask spread. If the bid is $2.79 and ask is $2.81, try $2.80 first.
- Set time-in-force to Day — the order expires at the close if unfilled. GTC (good-till-cancelled) is acceptable on illiquid contracts where you may need to wait.
- Review the confirmation screen carefully — check ticker, action, quantity, strike, expiration, and limit price. The single most common mistake in options trading is order-entry carelessness.
- Submit and monitor the fill — if the order doesn’t fill within a few minutes in a liquid market, raise your limit by a penny or two rather than switching to market.
Example
Boeing May 87.50 call — order walk-through
Boeing trades at $88.16. You believe a positive defense contract announcement next month will push it toward $93. The May 87.50 call shows bid $2.79 / ask $2.81 — a 2-cent spread, unusually tight for an option.
You open the order screen:
- Symbol: BA
- Action: Buy to Open
- Quantity: 1 contract (controlling 100 shares, roughly $8,800 of stock exposure for $281 of capital)
- Order type: Limit
- Limit price: $2.80 (midpoint)
- Time-in-force: Day
You submit. The order fills at $2.80 within seconds because the spread is so narrow. Your immediate position: long 1 BA May 87.50 call, cost basis $280, breakeven at $90.30 ($87.50 strike + $2.80 premium).
If Boeing rallies to $93 before expiration as you expect, the call’s intrinsic value alone will be $5.50 — a roughly 96% gain. If Boeing stays at $88.16 through expiration, the call expires worth $0.66 (intrinsic only, all time value gone) and you lose 76%. If Boeing drops below $87.50, the call expires worthless and you lose 100%. Three outcomes, three very different P&L paths — all priced into the moment you clicked submit.
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