IV Rank. IV rank measures where current implied volatility stands in relation to the range it has been in for a given period of time. The max rank is 100 and the minimum rank is 0. For example, suppose the past four IV readings were 20, 22, 35 and 40.
plural labors. Learner's definition of LABOR. 1. a : physical or mental effort : work. [noncount] A day's labor should get the job done. Getting the job done will require many hours of difficult labor. menial/manual labor.
Meaning body of laborers considered as a class (usually contrasted to capitalists) is from 1839. Sense of physical exertions of childbirth is 1590s, earlier labour of birthe (early 15c.), a sense also found in Old French, and cf. French en travail in (childbirth) suffering (see travail). Labor Day first marked 1882 in New York City.