Lesson 1: 5.0: Vertical Spread Architectures

A vertical spread means buying one option and selling another of the same type and expiration, at different strikes. The name comes from the strikes sitting vertically above one another on an option chain.

It exists to solve two problems you have already encountered in this course.

• The capital problem: A cash-secured put on a $95 stock ties up $9,500. A put spread with the same directional view might tie up $350. On a modest account, this is the difference between one position and a diversified book.

• The unlimited-risk problem: Selling a naked put or call exposes you to very large losses. Buying a further strike as protection caps that loss at a known figure before you enter.

★ Core Fact: Every vertical spread has a defined maximum profit and a defined maximum loss, both computable before you place the order. You never need to wonder what the worst case is.

Two directions, two ways to construct each. All four use the same underlying and expiration.

Credit spreads (you collect premium, you want the stock to stay away):

• Bull Put Spread: Sell a higher-strike put, buy a lower-strike put. Profits if the stock stays up.

• Bear Call Spread: Sell a lower-strike call, buy a higher-strike call. Profits if the stock stays down.

Debit spreads (you pay premium, you need movement):

• Bull Call Spread: Buy a lower-strike call, sell a higher-strike call. Profits if the stock rises.

• Bear Put Spread: Buy a higher-strike put, sell a lower-strike put. Profits if the stock falls.

★ Practical Guidance: Credit spreads suit high IV Rank environments, where premium is rich and you benefit from decay. Debit spreads suit low IV Rank, where options are cheap and you need directional movement to pay off. This is the volatility filter from Lesson 2.2 applied directly.

This is the defined-risk cousin of the cash-secured put, and it is the workhorse for smaller accounts.

Stock XYZ at $100, IV Rank 55. You are neutral to bullish over the next 40 days.

• Sell the $95 put for $2.00 (collect $200)

• Buy the $90 put for $0.90 (pay $90)

• Net credit: $1.10, or $110 per spread

The complete numbers:

• Maximum profit: $110 — realized if the stock stays above $95 and both expire worthless

• Strike width: $95 − $90 = $5.00, or $500

• Maximum loss: $500 − $110 = $390 — realized if the stock falls below $90

• Breakeven: $95 − $1.10 = $93.90

• Capital required: $390 (the maximum loss)

• Return on capital if maximum profit: $110 ÷ $390 = 28.2% over 40 days

★ Compare to the cash-secured put: The $95 cash-secured put ties up $9,500 to earn $200. This spread ties up $390 to earn $110. The spread earns less in dollars but roughly 13 times more per dollar of capital committed — and your worst case is capped at $390 rather than a potential multi-thousand-dollar assignment loss.

The debit version, used when you want directional exposure but find outright calls too expensive.

Stock XYZ at $100, IV Rank 22 — options are cheap. You are bullish over 45 days.

• Buy the $100 call for $3.50 (pay $350)

• Sell the $105 call for $1.50 (collect $150)

• Net debit: $2.00, or $200 per spread

The complete numbers:

• Maximum loss: $200 — the debit paid, realized if the stock stays below $100

• Maximum profit: $500 − $200 = $300 — realized if the stock closes above $105

• Breakeven: $100 + $2.00 = $102.00

• Return on capital if maximum profit: $300 ÷ $200 = 150%

Compare to buying the $100 call outright at $350. That has unlimited upside but needs the stock above $103.50 to break even. The spread breaks even at $102.00 and costs $150 less — you sacrificed the tail above $105 to reduce cost and lower the bar.

★ Core Fact: Selling the further strike caps your upside but funds a meaningful part of the position. Most directional moves do not extend far beyond a reasonable target, which is why spreads often outperform outright long options in practice.

The management rules mirror what you learned for single-leg premium selling, with one addition.

For credit spreads:

• Close at 50% of maximum profit. On the $110 credit spread above, buy it back at $0.55 and bank $55.

• Close at 21 days to expiration regardless, to avoid the gamma zone.

• If the short strike is breached, roll for a credit or close. Do not hold to expiration hoping for recovery.

The addition — assignment on the short leg: If your short put is assigned early, you buy 100 shares while still holding the long put as protection. This is manageable, not catastrophic, but it consumes capital unexpectedly. Exercising your long put closes the whole thing out at roughly the maximum loss.

⚠️ Risk Warning: Both legs must be closed. Traders sometimes close the profitable long leg and leave the short leg open, converting a defined-risk spread into a naked position. Always close spreads as a single multi-leg order, per Lesson 3.0.

Pick a stock and look at the Market tab's HV Rank for it. If it is high, build a bull put spread: sell the put near 0.25 delta and buy the strike $5 below, 30 to 45 days out. If volatility is low, build a bull call spread instead.

Read all six numbers from the panel: the net credit or debit, the maximum profit, the maximum loss, the breakeven, the capital required and the return on capital.

Then build the equivalent cash-secured put or outright long call and put the two side by side. The capital efficiency difference is usually the moment spreads stop feeling complicated and start feeling necessary.