Add training workflow, datasets, and runbook
This commit is contained in:
@@ -0,0 +1,35 @@
|
||||
Chapter 40: Advanced Concepts 903
|
||||
Recall that this is the sixth risk measurement of an option position. The gamma
|
||||
of the gamma is the anwunt by which the gamma will change when the stock price
|
||||
changes.
|
||||
Recall that in the earlier discussion of gamma, it was noted that gamma
|
||||
changes. This example is based on the same example used earlier.
|
||||
Example: With XYZ at 49, assume the January 50 call has a delta of 0.50 and a
|
||||
gamma of 0.05. If XYZ moves up 1 point to 50, the delta of the call will increase by
|
||||
the amount of the gamma: It will increase from 0.50 to 0.55. Simplistically, if XYZ
|
||||
moves up another point to 51, the delta will increase by another 0.05, to 0.60.
|
||||
Obviously, the delta cannot keep increasing by 0.05 each time XYZ gains anoth
|
||||
er point in price, for it will eventually exceed 1.00 by that calculation, and it is known
|
||||
that the delta has a maximum of 1.00. Thus, it is obvious that the gamma changes.
|
||||
In reality, the gamma decreases as the stock moves away from the strike. Thus,
|
||||
with XYZ at 51, the gamma might only be 0.04. Therefore, if XYZ moved up to 52,
|
||||
the call's delta would only increase by 0.04, to 0.64. Hence, the gamma of the gamma
|
||||
is -0.01, since the gamma decreased from .05 to .04 when the stock rose by one
|
||||
point.
|
||||
As XYZ moves higher and higher, the gamma will get smaller and smaller.
|
||||
Eventually, with XYZ in the low 60's, the delta will be nearly 1.00 and the gamma
|
||||
nearly 0.00.
|
||||
This change in the gamma as the stock moves is called the gamma of the
|
||||
gamma. It is probably referred to by other names, but since its use is limited to only
|
||||
the most sophisticated traders, there is no standard name. Generally, one would use
|
||||
this measure on his entire portfolio to gauge how quickly the portfolio would be
|
||||
responding to the position gamma.
|
||||
Example: With XYZ at 31. 75 as in some of the previous examples, the following risk
|
||||
measures exist:
|
||||
Option Option Option Position
|
||||
Position Delta Gamma Gamma/Gamma Gamma/Gamma
|
||||
Short 4,500 XYZ 1.00 0.00 0.0000 0
|
||||
Short 100 XYZ April 25 calls 0.89 0.01 -0.0015 -15
|
||||
Long 50 XYZ April 30 calls 0.76 0.03 -0.0006 - 3
|
||||
Long 139 XYZ July 30 calls 0.74 0.02 -0.0003 - 4
|
||||
Total Gamma of Gamma: -22
|
||||
Reference in New Issue
Block a user