Jade lizard
Sell a put, and sell a call spread above the price: if the total credit is at least the call spread's width, there is no loss on a rally.
Payoff sketch (per unit, index points)
Credit 311 pts
+311 pts (₹20,200 per lot)
Large as the price falls
24,489
How it works
A short put plus a bear call spread. Above the call spread the worst case is its width minus the total credit; when the credit is larger than the width, that side cannot lose.
The downside is a naked short put: below the put strike the loss grows point for point.
When traders use it
- A neutral-to-bullish premium trade without upside risk, accepting the short put's downside.
Greeks
| Delta | Positive. |
| Gamma | Negative. |
| Theta | Positive. |
| Vega | Negative. |
Profit, loss and margin
| Max profit | The total credit less charges, between the put strike and the short call strike. |
| Max loss | Below: (put strike − credit) if the underlying went to zero. Above: (call spread width − credit), which is zero or less when the credit covers the width. |
| Breakeven | Put strike − total credit (and short call + credit, if the credit is smaller than the call spread width). |
| Margin | The naked short put's margin plus the call spread's. |
In India
- Short options are margined like futures: NSE Clearing's SPAN risk margin plus an exposure margin (2% of notional for index contracts, 3.5% for stocks in Arthfy's model). An at-the-money short option on NIFTY typically blocks well over a lakh of rupees per lot.
- STT is charged on the premium when an option is sold (0.15% of premium from 1 April 2026 in Arthfy's cost model). A short option left to expire, in or out of the money, is not charged STT again at settlement.
- Since 20 November 2024 an extra 2% extreme-loss margin applies to short index options on their expiry day, so a position carried into expiry morning can need more margin than it did the day before.
Arthfy numbers
Arthfy's history does not cover the jade lizard as one structure; its parts are on the short put and bear call spread pages. See Short put (naked).
