Convexity
Convexity in finance refers to the non-linear relationship between an asset's price and its yield or the value of an option relative to the underlying price. In options trading, it describes the gamma effect, where the rate of change of an option's price increases as the underlying asset moves closer to the strike price.
This property is beneficial for long option holders because the position gains value faster when the market moves in their favor and loses value slower when it moves against them. Conversely, it is a significant risk for those who are short options.
Understanding convexity is vital for managing risk in leveraged portfolios and for constructing strategies that profit from significant price moves. It is a core concept in the pricing and management of derivative instruments.