Bank Nifty's weekly options picking up
Published: Jun 30, 2017
By TIOLCORP News Service
NEW DELHI, JUNE 30 2017: It has been noticed that volumes in weekly options on Bank Nifty index has risen nearly four-fold in the past one year. Weekly options in India are available only for the Bank Nifty index. In addition, their average daily trade volumes (ADV) have surpassed the total volumes of the monthly options due to increased interest from the high net worth individuals (HNIs) and proprietary desk. ADV of the weekly options rose to ? 318 crore in May 2017 compared with ? 81 crore in June 2016, according to NSE. Also, it was 55% higher than the monthly contracts in May 2017.
The contract of weekly options is introduced each Thursday, and they expire on the next Thursday with adjustments for holidays. They are used to either hedge an event risk which is too close, making a monthly option inappropriate, or to take advantage of price mismatch between the current and fair values of options reflected by theta.
There are a couple of reasons for success. A trader can buy weekly option to hedge the portfolio when event risk is the closest by paying the option premium for just one week rather than for an entire month in case of monthly options. The premium cost of weekly options is nearly half of the monthly options. Weekly options can be used for speculative gains on theta. Theta measures the rate of decline in the value of options due to the passage of time. Any difference between the prices based on the time decay adjusted value and the current price increase trading interest.
However, there is a flip side to the weekly options. Due to short duration and rapid time decay, traders rarely have time to recoup losses, if any.