shortPutButterfly {butterflyOptions}

Calculates per share Profit and Loss (PnL) at expiration for Short Put Butterfly Option Strategy and draws its Bar Plot displaying PnL in the Plots tab.

Description

This strategy consists of a short position in an OTM (out of the money) put option with a strike price $X1L, a long position in two ATM ( at the money) put options with a strike price $X, and a short position in an ITM (in the money) put option with a strike price $X3H. The strikes are equidistant: $X3H minus $X equals to $X minus $X1L (Kakushadze & Serur, 2018).

Usage

shortPutButterfly(
  ST,
  X,
  X1L,
  X3H,
  P,
  P1L,
  P3H,
  hl = 0,
  hu = 2,
  spot = spot,
  pl = pl,
  myData = myData,
  myTibble = myTibble,
  PnL = PnL
)

Arguments

ST

Spot Price at time T.

X

Strike Price or eXercise price for two ATM bought puts.

X1L

Lower Strike Price or eXercise price for one OTM shorted put.

X3H

Higher Strike Price or eXercise price for one ITM shorted put.

P

put Premium or put Price paid for the two ATM bought puts.

P1L

put Premium or put Price received for the first OTM shorted put.

P3H

put Premium or put Price received for the one ITM shorted put.

hl

lower bound value for setting lower-limit of x-axis displaying spot price.

hu

upper bound value for setting upper-limit of x-axis displaying spot price.

spot

Spot Price

pl

Profit and Loss column of the data frame

myData

Data frame

myTibble

Table

PnL

Profit and Loss

Details

According to conceptual details given by Cohen (2015), and a closed form solution provided by Kakushadze and Serur (2018), this method is developed, and the given examples are created, to compute per share Profit and Loss at expiration for Short put butterfly Options Strategy and draw its graph in the Plots tab.

Value

graph of the strategy

Author(s)

MaheshP Kumar, [e-mail]

References

Cohen, G. (2015). The Bible of Options Strategies (2nd ed.). Pearson Technology Group.
Kakushadze, Z., & Serur, J. A. (2018, August 17). 151 Trading Strategies. Palgrave Macmillan. https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3247865
R Graphics Cookbook. (n.d.). Coloring Negative and Positive Bars Differently. https://r-graphics.org/recipe-bar-graph-color-neg
Gross C, Ottolinger P (2016).ggThemeAssist: Add-in to Customize 'ggplot2' Themes. R package version 0.1.5, <URL: https://CRAN.R-project.org/package=ggThemeAssist>.

Examples

shortPutButterfly(400,400,375,425,7,5,18,hl=0.9,hu=1.1)