Chapter 3 — Defined-Risk Directional Bets
A bull call spread is an options strategy where you simultaneously <strong>buy a call</strong> at one strike and <strong>sell a call</strong> at a higher strike — both expiring on the same date. The premium you collect from the short call offsets the cost of the long call, reducing your net cost. The short call caps your upside; the long call gives you directional exposure. Together, they create a trade with a known max loss from the moment you enter.
Think of it like buying a concert ticket and selling your friend the option to buy it from you at a higher price before the show. You paid for the ticket, they paid you for the resale rights — your upside is capped at whatever you agreed to sell it for, but you also spent less of your own money to get in.
A naked call costs more upfront. If implied volatility is high, a plain call can be prohibitively expensive — you are paying for time value and volatility premium you may not need. A spread fixes this: by selling the higher strike call, you collect premium that lowers your cost. Your breakeven drops, your max loss is defined, and you need less capital to put the trade on.
A naked call is like buying a full-price ticket to a show. A spread is like buying the ticket and reselling it to a friend for half price — your out-of-pocket cost is cut, but your profit is capped at whatever you can sell it for.
The lower strike (long call) should reflect your realistic target — where you think the stock will realistically get to, not where you hope it goes. The upper strike (short call) is where your profit gets capped. The wider the spread, the more profit potential — but also the higher the cost (net debit) and the more the stock needs to move to reach breakeven.
You set your stops before a road trip, not after. The long call is your destination. The short call is the speed limit — it limits how fast you can go, but it also makes the journey cheaper.
| Component | Value |
|---|---|
| Long call strike | Your entry point — buy at or near current price (ATM or slightly ITM) |
| Short call strike | Your profit target — sell at your realistic price objective |
| Spread width | $5 wide = $500 per contract; $10 wide = $1,000 per contract |
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Your <strong>max loss</strong> is the net debit — whatever you paid to enter the trade. That is the worst it can get. Your <strong>max profit</strong> is the spread width minus the net debit. Your <strong>breakeven</strong> is the long call strike plus the net debit you paid. For example: buy the $100 call for $5.00, sell the $105 call for $2.00, net debit is $3.00. Breakeven is $103. If the stock is below $103 at expiration, you lose. Above $103, you profit. At $105 and above, you hit your max profit.
You paid $3 upfront to play a game. Every dollar the stock rises above $103 earns you $1 in profit. If it stays below $103, you lose your $3 entry fee. Your worst-case loss is $3 — you knew it going in.
Expiration drives everything in a spread. A longer-dated spread (45+ days) gives the stock more time to move in your favor — but it costs more because of time value. A shorter-dated spread (2-3 weeks) is cheaper but decays faster, meaning the stock needs to move quickly. Most bull call spreads are set up with 30-60 day expirations, giving enough time for the directional thesis to play out without burning through too much theta.
A longer lease costs more per month but gives you breathing room. A shorter lease is cheaper but demands immediate action — if the tenant does not move in fast, you are left with nothing.
A bull call spread wins when the stock moves up moderately — not necessarily a moonshot, just enough to cross the breakeven and ideally reach the short call strike. It struggles when the stock barely moves (not enough to cross breakeven) or moves so far that a naked call would have made significantly more. Time decay is your enemy: if the stock is flat, both legs lose value daily. IV crush after an earnings report can devastate a spread — even if the stock moves, the collapse in implied volatility can wipe out your gains.
The spread is like a net — it catches moderate moves and keeps you safe. But if there is no movement at all, you paid for the net and caught nothing. And if the stock goes parabolic, you left a lot of profit on the table.
Implied volatility (IV) is the market’s estimate of how much a stock will move. When IV is high, both legs of your spread are expensive — but the short call is more expensive, which actually makes the spread cheaper relative to a naked call. When IV drops (IV crush), both legs lose value. For bull call spreads, IV crush is a real risk: if you enter before an earnings announcement and the stock only moves modestly, the IV collapse can reduce your position’s value even if the trade was directionally correct.
Insurance prices rise before a hurricane. You pay more for the same coverage. When the storm passes, the prices drop — even if your house survived. That is IV crush in a nutshell.
Most experienced spread traders take profits at 50-70% of max profit. If your spread is worth $6 and you can close it for $4 (67% of max), that is often a good exit — locking in a win without risking a reversal. Let a spread run if the stock is still moving toward your target with time remaining and no sign of reversal. Close or roll the trade if the thesis breaks (stock reverses lower), IV starts to collapse before your target, or time decay is accelerating in the final two weeks with little movement.
A surfer who catches a wave early and gets out before it crashes collects a clean ride. The surfer who waits for the perfect moment often wipes out. In spreads, 70% of max profit taken early beats 100% of max profit that never arrives.
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