Short Put Ladder Spread

Short Put Ladder Spread Risk Graph
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Short Put Ladder Spread - Definition


An options strategy consisting of buying an additional lower strike price put option on a bull put spread in order to transform the position from a bullish strategy to a volatile strategy.

Short Put Ladder Spread - Introduction


The Short Put Ladder Spread, also known as the Bull Put Ladder Spread, is an improvement to the Bull Put Spread, transforming it from an options strategy that profits only when the underlying stock goes upwards into a volatile strategy that profits when the underlying stock goes upwards or downwards with unlimited profit potential to downside.

This tutorial shall explain what the Short Put Ladder Spread is, its calculations, pros and cons as well as how to profit from it.

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Short Put Ladder Spread - Classification



Type of Strategy : Volatile | Type of Spread : Vertical Spread | Debit or Credit : Credit

The Short Put Ladder Spread is part of the "Ladder Spreads" family. Ladder Spreads add an additional further out of the money option on top of two legged spreads, stepping the position up by another strike price. The use of progressively higher or lower strike prices in a single spread gave "Ladder Spreads" its name.





When To Use Short Put Ladder Spread?


The Short Put Ladder Spread could be used when the underlying stock is expected to remain stagnant, rise moderately or drop significantly.



How To Use Short Put Ladder Spread?


Short Put Ladder is made up of writing an At The Money (or slightly ITM or OTM) Put Option, buying an equivalent amount of a lower strike price Out Of The Money Put Option and then buying yet another equivalent amount of an even lower strike price out of the money put option.

Sell ATM Put + Buy OTM Put + Buy Lower Strike OTM Put


Short Put Ladder Spread Example



Assuming QQQ trading at $44.

Sell To Open 1 contract of QQQ Jan44Put, Buy To Open 1 contract of QQQ Jan42Put and Buy To Open 1 contract of QQQ Jan41Put.




Choosing Strike Prices For Short Put Ladder Spread



Short Leg
The short leg of a Short Put Ladder Spread is usually the At The Money option or a strike price that is nearest the money. This is because the primary profit of a Short Put Ladder Spread, which is the net credit of the position made when the underlying stock remains stagnant or moves upwards, requires as high an extrinsic value as possible and At The Money options contain the highest extrinsic value within the same expiration month.

Middle Strike Price
The closer the middle strike price is to the strike price of the short leg, the more expensive it is and the lower the resultant net credit becomes. This results in a lower profit when the underlying stock remains stagnant or moves upwards but also a lower maximum loss. The further the middle strike price is to the short leg, the higher the net credit becomes, resulting in a higher profit when the underlying stock remains stagnant or moves upwards and also a higher maximum loss.

The further away the middle strike price is to the short leg, the further away the downside breakeven point becomes. This means that the underlying stock would have to drop more in order to start profiting to downside.

As such, in a Short Put Ladder Spread, options traders usually buy the middle strike price two strike prices lower than the short leg for stocks with strike prices at $1 interval or one strike price lower for stocks with strike prices at $5 interval, in order to obtain a more balanced risk profile.

Lower Strike Price
The difference in strike price between the middle strike and the lower strike determines the price range over which maximum loss will occur for a Short Put Ladder Spread. In our QQQ example above, maximum loss will occur when the QQQ closes between $42 (middle strike) and $41 (lower strike) by expiration. Increasing the strike difference between the lower strike and the middle strike results in only a very small increase in net credit but pushes back the lower breakeven point even further and increases the price range over which maximum loss occurs without significant decrease in maximum loss amount. As such, the lower strike price is usually bought one strike lower than the middle strike price in a Short Put Ladder Spread.



Trading Level Required For Short Put Ladder Spread


A Level 4 options trading account that allows the execution of credit spreads is needed for the Short Put Ladder Spread. Read more about Options Account Trading Levels.



Profit Potential of Short Put Ladder Spread


Short Put Ladder Spread profits in all 3 directions; When the underlying stock goes upwards (strongly or moderately), remains stagnant or goes downwards strongly. Indeed, the Short Put Ladder Spread has made profitable 4 out of 5 possible outcomes which makes its probability of profit extremely high.

For the stagnant and upwards movement, the Short Put Ladder Spread profits primarily through the net credit gained from writing the higher extrinsic value ATM put options and buying cheaper OTM put options. As long as the price of the underlying stock remains above the strike price of the ATM put options, the net credit is made as profit.

When the price of the underlying stock drops dramatically, it will come to a point beyond the strike price of the lower strike put options when the two long put legs will profit more than the single short put leg, resulting in unlimited profit to downside all the way to the stock becoming $0.

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Profit Calculation of Short Put Ladder Spread


Maximum Upside Profit = Net Credit
Maximum Downside Profit = Unlimited

Maximum Loss = Short Put Strike - Higher Long Put Strike - Net Credit

Short Put Ladder Spread Calculations



Following up on the above example, assuming QQQQ at $46.50 at expiration.

Wrote the JAN 44 Put for $1.50
Bought the JAN 42 Put for $0.50
Bought the JAN 41 Put for $0.15

Net Credit = $1.50 - $0.50 - $0.15 = $0.85

Maximum Loss = 44 - 42 - 0.85 = $1.15

Max. Upside Profit = $0.85

Max. Downside Profit = Unlimited




Risk / Reward of Short Put Ladder Spread



Maximum Upside Profit : Limited to net credit received

Maximum Downside Profit: Unlimited (all the way to $0 stock price)

Maximum Loss: Limited



Break Even Point of Short Put Ladder Spread



There are 2 break even points to a Short Put Ladder Spread. Loss will occur if the underlying stock closes within the upper and lower breakeven point by expiration.

Upper BEP: Short Put Strike - Net Credit
Lower BEP: Lower Long Strike - Strike difference between short put and higher long put + Net Credit

Short Put Ladder Spread Breakeven Points Calculation



Upper BEP = $44 - $0.85 = $43.15

Lower BEP = $41 - ($44 - $42) + $0.85 = $39.85




Short Put Ladder Spread Greeks



Delta : Positive
Delta of Short Put Ladder Spread is positive at the start. As such, its value will increase as the price of the underlying stock increases. The short put ladder spread can start in delta neutral or slightly delta negative as expiration becomes longer.

Gamma : Negative
Gamma of Short Put Ladder Spread is negative for a start and will increase delta as the price of the underlying stock decreases, resulting in a downside loss. But shortly after, the Gamma of the Short Put Ladder Spread will begin to turn positive as the positive gamma of the two long put legs increase beyond the negative gamma of the short put leg. This will then decrease overall position delta into the negative allowing the position to profit to downside. The short put ladder spread can start in slightly positive gamma as expiration becomes longer.

Theta : Negative
Theta of Short Put Ladder Spread is negative for a start and will therefore lose value due to time decay in the short term prior to expiration as the long put legs lose value faster than the short put leg. However, as the short put leg contains more extrinsic value than the long put legs combined, theta will turn positive as expiration approaches, resulting in a profit even if the price of the underlying stock remains stagnant.

Vega : Increases with Length of Expiration
Vega of Short Put Ladder Spread can start slightly negative with near term options and increase to positive as longer expiration options are used. When this is the case, the position would profit on an increase in implied volatility, usually when the underlying stock declines.



Advantages Of Short Put Ladder Spread



:: Able to profit in 4 out of 5 possible moves in the underlying stock

:: Unlimited profit to downside



Disadvantages Of Short Put Ladder Spread



:: Small margin needed as it is a credit spread.


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