Every term is defined twice: once the way a filing would put it, and once the way somebody would explain it to you across a table. The second one is usually the one that sticks.
Showing 2 terms
The volatility implied by an option’s price — the market’s expectation of future movement.
It rises before known events and collapses afterwards, which is why buying options into results often disappoints.
The strike-by-strike table of open interest, change in open interest, volume and implied volatility for an underlying's options, published live and free by the NSE.
The strike with the largest call open interest often acts as resistance and the largest put strike as support, because writers hedging those positions generate real buying and selling. One source of confluence, not a forecast.