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The ratio of the change in price of an option to the change in price of the underlying asset. Also called the hedge ratio. Applies to derivative products. For a call option on a stock, a delta of 0.50 means that for every $1.00 that the stock goes up, the option price rises by $0.50. As options near expiration, in-the-money call option contracts approach a delta of 1.0, while in-the-money put options approach a delta of -1. See: hedge ratio, neutral hedge. Call deltas range from 0.00 to +1.00; put deltas range from 0.00 to -1.00. If the call delta is 0.69, the put delta is -0.31 (call delta minus 1 equals put delta; 0.69 -1 =-0.31).
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The change in the price of an option that results from a one-point change in the price of the underlying stock. For example, a delta of 0.5 indicates that the option will rise in price by 1/2 point (50¢) for each 1-point ($1) rise in the price of the underlying stock. Call options have positive deltas; put options have negative deltas.
Wall Street Words: An A to Z Guide to Investment Terms for Today's Investor by David L. Scott. Copyright © 2003 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. All rights reserved.


The relationship between an option's price and the price of the underlying stock or futures contract is called its delta.

If the delta is 1, for example, the relationship of the prices is 1 to 1. That means there's a $1 change in the option price for every $1 change in the price of the underlying instrument.

With a call option, an increase in the price of an underlying instrument typically results in an increase in the price of the option. An increase in a put option's price is usually triggered by a decrease in the price of the underlying instrument, since investors buy put options expecting its price to fall.

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References in periodicals archive ?
The VC said that Sindh coastal and deltaic region needs the research based studies particularly on saline water aquaculture, seawater intrusion, freshwater aquifers and various socio-economic dynamics of livelihood and maintenance of natural ecosystem specially for adaptation measures to face the climate change and freshwater scarcity conditions at the coastal and deltaic area of Sindh.
Mukhtiar Ahmed Mahar Director of the Centre for coastal and Deltaic Studies handover the booklets copies of Research studies on (i)review of Sindh Coastal Development Authority Act 1994 and Sindh Coastal Development Plan, (ii) razor clam fishery and socio-economic conditions of fishing community in coastal areas of Sindh Pakistan for accreditation of M.Sc certification, (iii) education and Research on coastal fisheries management in Sindh Pakistan.
The swinging leg supports this by a quick and powerful pulling up (gracilis muscle and hamstring) as well as the swinging of both arms (deltaic muscle, serratus anterior muscle, and wide dorsal muscle) (Struder, Jonath & Scholz, 2013).
Thus, it is interpreted from this part of the profile section that the estuarine/mangrove type sediment depositional environment had decreased, and saline or brackish water influence has begun to lessen due to continued sea level regression from 2.5 to 2.0 m and, that the mangrove/estuarine or deltaic depositional environment is more predominant from 2.5 m and below the mentioned profile (KS.TP.10).
Specimen assemblages variously composed of freshwater, freshwater-tolerant, brackish, and marine taxa indicate mixing on a floodplain with limited sediment accumulation through deltaic progradation or river avulsion as, in part, envisaged by Ludvigson and Witzke (14).
Most of the hydrocarbons in CPI's area are reservoired in deltaic sandstones contained in anticlinal structures (see the background in omt11IndnsFieldsMar14-11).
Elsewhere the land is low, lying either with forest cover much of which has been cleared later for agriculture, or comprises swamps and marshes associated with the deltaic mouths of rivers or on coastal islands.
There are a few hostels in Sandakphu village but it is better to check with a travel operator who work in the area such as Yak & Yeti Travels Deltaic Island Bakkhali Cycling through beautiful deltaic island townships What: A beautiful and charming seaside town in the South 24 Parganas district, the town is located at the fringes of the Gangetic delta and also has historical ruins.
Ecological degradation is increasing in deltaic plains.
The Monteith Formation is a silica-cemented, fine- to medium- to coarse-grained, sub-angular to subrounded, 95 percent quartz arenite of deltaic origin (Hickin and others, 2010).
According to a study conducted by the National Institute of Oceanography, creek network in the Indus deltaic region, extending over 70km along the Arabian Sea, can alone generate 900MW tidal power.
The mangroves are the major elements of the deltaic flora and fauna and are an ideal place for the growth of Prawns.