Big Lizard: A Straddle With No Upside Risk
You expect the stock to stay near its current price but want to collect a bigger credit than a jade lizard offers. A big lizard sells a straddle right at the money and buys a call above it to cap the upside, leaving unlimited risk only on the downside.
- Exactly what you sell: an at-the-money straddle plus a long call to cap the upside
- The payoff: big credit, no upside risk, unlimited downside risk
- Your numbers: net credit, how the long call removes upside risk
- When a big lizard fits and how it compares to a jade lizard
A big lizard is a jade lizard's bigger, bolder cousin. Instead of selling a naked put plus a call spread, you sell a full at-the-money straddle (call and put at the same strike) and buy one further-out call to cap the upside. This collects more premium than a jade lizard because you are selling the straddle's larger at-the-money premium, not an out-of-the-money put. The cost: your downside risk is fully naked, same as a short put.
What You Actually Do
Apple trades at $200. You sell one 1-month $200 call for $5 a share, $500, and sell one 1-month $200 put for $5 a share, $500 (a short straddle). To cap your upside risk, you buy one 1-month $215 call for $1 a share, $100.
Your net credit: $500 plus $500 minus $100 = $900 collected. The $15 gap between your short $200 call and long $215 call is smaller than your $900 credit, so you have no risk if Apple rallies, no matter how high it goes. Your downside, though, is fully exposed: if Apple craters, you own the stock effectively at $200 minus your $9 credit, or a breakeven near $191.
The Payoff, Drawn
Drag the slider to see how you do at different ending prices for Apple (at 1-month expiration).
The shape is lopsided by design. At $200, you hold the full $900 credit. Moving up, profit shrinks but never turns negative, because your long call absorbs anything past $215. Moving down, profit shrinks and then turns into a growing loss with no floor, just like a naked short put. The key: you traded away downside protection entirely to fully remove upside risk and collect a bigger credit.
The Trade-Off: Bigger Credit, Naked Downside
A big lizard is what happens when you push the jade lizard concept further.
A jade lizard sells a naked put and a call spread, keeping the put side capped only by assignment risk (you own the stock, which is uncomfortable but not literally unlimited in the way margin calls can feel). A big lizard sells the full straddle, collecting more premium upfront because at-the-money options carry the fattest time value. The upside is fully protected by the long call, same principle as a jade lizard, but the downside is a completely naked short put: no spread, no protection, full exposure if the stock falls hard.
The math: the bigger credit exists because you are taking on more downside risk than a jade lizard, not because the strategy is more efficient. It is a direct trade of protection for premium.
When a Big Lizard Fits
- You expect the stock to stay near the current price
- IV is elevated, making the straddle premium fat
- You want zero upside risk and accept naked downside
- The stock has crash or gap-down risk (earnings, news)
- You cannot tolerate unlimited downside loss
- You would rather have defined risk on both sides (use an iron condor)
A big lizard is for the confident, income-focused trader who is fully willing to own the stock on a decline and wants to fully remove upside risk in exchange for a bigger credit. It is not for traders worried about a crash or who want defined risk everywhere.
A Worked Example
Walk through three scenarios: you collected $900 from selling the straddle and buying the protective call.
Apple stays at $200. Both the short call and short put expire worthless (right at the strike, essentially breakeven on intrinsic value). You keep the full $900 credit. Best case.
Apple rallies to $230. The short call is deep ITM, but your long $215 call absorbs the loss past $215. Net loss on the call side is capped at $15 minus your credit, and because your $900 credit exceeds that $1,500 gap... actually here the $15 width ($1,500) is bigger than your $900 credit, so you lose the difference: -$600. This shows why the credit must exceed the call spread width to have zero upside risk; check your own numbers before trading.
Apple crashes to $170. The short put is deep ITM. You are effectively long the stock at your breakeven near $191, so at $170 you are down about $2,100 ($191 minus $170, times 100 shares). This is the naked downside risk in action.
That is the big lizard: a bigger credit than a jade lizard, upside risk removed if your math is right, and full unlimited exposure on the downside.
- A big lizard is selling an at-the-money straddle and buying a further call to cap upside risk.
- Max profit is the net credit; upside risk is removed only if the credit exceeds the call spread width.
- Downside is fully naked, same as a short put, unlimited risk to zero.
- It fits confident income traders willing to own the stock on a decline, who specifically want zero upside risk.
Pop Quiz
Two quick checks. Pick an answer and the explanation shows up right away.
How does a big lizard differ from a jade lizard?
A big lizard sells the full straddle (bigger credit, at-the-money premium). A jade lizard sells a naked put plus a call spread (smaller credit, out-of-the-money strikes).
What must be true for a big lizard to have zero upside risk?
If your credit is bigger than the call spread width, any loss on the call side is fully covered by the premium collected. If not, you can still lose money on a big rally.
Bottom Line
A big lizard is the bigger, bolder sibling of the jade lizard: sell the full at-the-money straddle, buy one call to cap the upside, and collect a larger credit in exchange for fully naked downside risk. It fits confident, income-focused traders who are comfortable owning the stock on a crash and want to specifically eliminate upside risk. Reach for it when IV is elevated and you expect the stock to stay range-bound. Avoid it around earnings or other crash-risk events where the naked downside can hurt.