May Series Day=23 Nifty=4951 (-39)
Expiry Zone is now moved downwards 4900 strike as nifty lost around 39 points.
Despite this strikes below 4900 on PUT has not added value.In fact they have lost.
This tells how strong the THETA on nifty.But on the other hand Bank Nifty has
changed by -174 points.CALLS closer to 9500 lost values ,but PUTs lesser than
9500 has gained handsomely.I want to say the effect of THETA in case of Bank
Nifty is not as severe as in case of Nifty.Those regularly trading in BNF, throw
some light on this aspect.
On OI front today,CALLs added OI whereas PUTs sheded OI.There is likely UP
ward movement by few points.On Expiry day ,anyway INDEX is highly volatile.
THETA (time decay):
The option's theta is a measurement of the option's time decay.
The theta measures the rate at which options lose their value,
specifically the time value, as the expiration date draws nearer.
Generally expressed as a negative number, the theta of an option
reflects the amount by which the option's value will decrease every day.
(courtesy:theoptionguide.com)
In this series we have 11 UP days and 13 DOWN days:
UUUDDDUDDDDDUDUUUDDUDUUD
(After considering Previous Expiry day at the beginning)
Expiry Zone is now moved downwards 4900 strike as nifty lost around 39 points.
Despite this strikes below 4900 on PUT has not added value.In fact they have lost.
This tells how strong the THETA on nifty.But on the other hand Bank Nifty has
changed by -174 points.CALLS closer to 9500 lost values ,but PUTs lesser than
9500 has gained handsomely.I want to say the effect of THETA in case of Bank
Nifty is not as severe as in case of Nifty.Those regularly trading in BNF, throw
some light on this aspect.
On OI front today,CALLs added OI whereas PUTs sheded OI.There is likely UP
ward movement by few points.On Expiry day ,anyway INDEX is highly volatile.
THETA (time decay):
The option's theta is a measurement of the option's time decay.
The theta measures the rate at which options lose their value,
specifically the time value, as the expiration date draws nearer.
Generally expressed as a negative number, the theta of an option
reflects the amount by which the option's value will decrease every day.
(courtesy:theoptionguide.com)
In this series we have 11 UP days and 13 DOWN days:
UUUDDDUDDDDDUDUUUDDUDUUD
(After considering Previous Expiry day at the beginning)