What's The Difference Between a Butterfly & a BrokenWing Butterfly
Tuesday, February 09, 2010
By Charles Cottle
What’s the difference between a Butterfly, involving 3 equidistant strikes, and a BrokenWing Butterfly (aka BWB, Unbalanced Butterflies or ratioed verticals), also involving 3 equidistant strikes?
Answer: A certain amount of credit spread verticals that help to pay for the butterflies.
If you started with a 3 strike butterfly (like the 1by3by2 in Pink below), targeting a likely expiration range (you can use Diamonetrics™ for this) and you wished for a convenient way to pay for it, then you would sell additional credit spreads involving the existing short and long strikes of the selected butterfly. To sell a greater amount of credit spreads is more aggressive, because it adds exposure to the potential liability in the event the market goes out of the range on the more heavily weighted side. The more heavily weighted side in the image below is to the upside.

Image Courtesy of Chapter 6 of “Options Trading: The Hidden Reality”(Exhibit 6-31)
To be most effective, it helps to have an opinion of where the underlying price may go and not go. The most vital consideration in selecting strikes for all options strategies is establishing action points. Action points consist of:
- A predetermined entry point based on one's opinion of suppor and resistance until expiration
- Exit levels based on the underlying violating support and resistance. This is where the trader says: "I'm Wrong", and either liquidates the trade or adjusts it to represent a brand new market opinion.
- Level for taking profits, harvesting baby butterflies, or parlaying profits with other adjustments.
Both Butterflies and BrokenWing Butterflies, involving the same strikes, play for the exact same target, i.e. the middle short “body” strike. The BWB is more aggressive and requires more attention but I am happy to report that many traders are becoming very good at managing, adjusting and rolling the risks involved.
What’s the difference between a Butterfly, involving 3 equidistant strikes, and a BrokenWing Butterfly (aka BWB, Unbalanced Butterflies or ratioed verticals), also involving 3 equidistant strikes?
Answer: A certain amount of credit spread verticals that help to pay for the butterflies.
If you started with a 3 strike butterfly (like the 1by3by2 in Pink below), targeting a likely expiration range (you can use Diamonetrics™ for this) and you wished for a convenient way to pay for it, then you would sell additional credit spreads involving the existing short and long strikes of the selected butterfly. To sell a greater amount of credit spreads is more aggressive, because it adds exposure to the potential liability in the event the market goes out of the range on the more heavily weighted side. The more heavily weighted side in the image below is to the upside. Image Courtesy of Chapter 6 of “Options Trading: The Hidden Reality”(Exhibit 6-31)
To be most effective, it helps to have an opinion of where the underlying price may go and not go. The most vital consideration in selecting strikes for all options strategies is establishing action points. Action points consist of: Both Butterflies and BrokenWing Butterflies, involving the same strikes, play for the exact same target, i.e. the middle short “body” strike. The BWB is more aggressive and requires more attention but I am happy to report that many traders are becoming very good at managing, adjusting and rolling the risks involved.



Comments
Post has no comments.