Crop Weather index insurance: With this type of insurance, the indemnity is based on realizations of a specific weather parameter measured over a pre-specified period of time at a particular weather station or for a given satellite grid.
Definition of stock for English Language Learners. : 1  the supply of goods available for sale in a store. : 2  a supply of something that is available for use. : 3  a share of the value of a company which can be bought, sold, or traded as an investment.
Updated March 03, 2017. A stock index is a compilation of stocks constructed in such a manor to track a particular market, sector, commodity, currency, bond, or other asset. For example, the NDX is an index that tracks the largest 100 non-financial companies listed on the NASDAQ.