The poor man's covered call as a diagonal

A diagonal spread is a calendar with different strikes: sell a near-dated option at one strike, buy a longer-dated option at another. The best-known diagonal is the "poor man's covered call," which replaces the 100 shares of a covered call with a deep in-the-money long-dated call. It costs about a third as much, behaves almost the same for moderate moves, and has a few failure modes the shares do not.

The structure

XYZ at $50, IV 30%. A standard covered call would be 100 shares at $50 and a short 30-day $53 call at $0.85 (delta about 0.28): net outlay $49.15 per share, $4,915.

The poor man's version:

The deep call's delta of 0.88 makes it behave like 88 shares. Its extrinsic value of $0.85 is mostly the cost of carry over six months; it decays slowly because the option is far in the money.

The one rule to check before entering: short strike − long strike must exceed the net debit. Here 53 − 35 = 18 > 15. If the stock runs through $53 and the short call is assigned, the long call is worth at least $18 and you paid $15, so the worst case on the upside is still a profit. A diagonal that fails this test can lose money on a rally, which is the opposite of what a covered call is for.

P&L at the front expiration

Thirty days later. The short call expires; the long call has 150 days left and IV is still 30%.

The two profiles are within a few tenths at every price. The diagonal is slightly worse in the middle (the long call's extrinsic value decays about $0.25 in the month) and slightly better far down (it still has some extrinsic value at $40, where the shares have none). The dollar numbers are close; the capital is not:

Same P&L on a third of the capital means three times the return and three times the loss as a percentage. That is leverage, not a free improvement.

Poor man's covered call vs covered call, at front expiry

  +3.85 |                 ______________  covered call
  +3.58 |                _______________  diagonal (0.27 below)
        |              /
    0   |------------X-------------------
        |          /
  -4.15 |        /
  -9.15 |______/                          (diagonal -8.53 at 40)
        +---+---+---+---+---+---+---+
        40  43  46  49  52  55  58   XYZ

Running it as a campaign

The point of the structure is to sell a new 30-day call each month against the same long call. Over five monthly cycles, a trader who collects about $0.85 each time takes in roughly $4.25 against a long call that bought at $15.85 will have lost perhaps $0.70 of extrinsic value. The rest of the result is the stock's path. The management rules are the covered call's rules plus two:

• Sell the short call at 20–30 delta, 30–45 days out, above your cost basis test (short strike − long strike > debit, every time).
• Roll the short call up and out if the stock rallies through it and you want to keep the position; roll for a credit or not at all.
• Close the whole position, or roll the long call, when the long call has about 90 days left. Its extrinsic decay accelerates from there and its delta becomes more sensitive to drops.
• If the short call is assigned, you are short 100 shares against a long call. Do not exercise the long call to cover: that throws away its extrinsic value. Buy the shares back in the market and sell the long call, or buy the shares and keep the long call if you want to stay long.

What can go wrong that cannot go wrong with shares

• A sharp drop cuts the long call's delta. At $40 the long $35 call's delta is about 0.78, not 0.88, and falling. The position is losing less than shares on the way down but will also recover less on the way back until the stock is well above $45. Shares have delta 1 always.
• IV matters. The long call has more vega than the short call. A fall in IV hurts a little; a rise helps a little. The share version has no vega at all.
• The dividend goes the other way. You do not receive it, and the ex-dividend date is an early-assignment trigger on the short call (Module 2, lesson 4).
• Liquidity in the long-dated call. Six-month options on smaller names can have wide markets. Pay it once on entry and once on exit; on a $15.85 option a $0.30 bid-ask is 2%.

Key idea: The poor man's covered call is a diagonal: a deep in-the-money long-dated call standing in for shares, with a short-dated call sold against it. It reproduces the covered call's P&L within a few tenths on about a third of the capital, which triples both the return and the percentage loss. Check that short strike minus long strike exceeds the debit, and never exercise the long call to meet an assignment.

Try it: On a stock you would consider for a covered call, price a 0.85-delta call about six months out and a 0.25-delta call about 30 days out. Compute the net debit and check the strike-difference rule. Build both the diagonal and the covered call in the options profit calculator and compare the P&L at the front expiration at −20%, −10%, 0, +6% and +20%.

Recap

• A diagonal is a calendar with different strikes; the poor man's covered call is a deep ITM long-dated call plus a short-dated OTM short call.
• Rule: short strike − long strike > net debit, or a rally can lose money.
• P&L tracks the covered call within a few tenths; capital is about a third, so returns and losses are about triple in percentage terms.
• Roll or close the long call around 90 days left; roll the short call for credits only.
• Never exercise the long call to cover an assignment; buy shares in the market and sell the long call instead.