http://www.investopedia.com/terms/d/delta.asp Delta delta http://www.investopedia.com/terms/d/delta.asp Delta Delta http://www.investopedia.com/terms/d/delta.asp Delta Option Delta definition Delta this Delta Factor http://www.investopedia.com/terms/d/delta.asp delta delta delta delta delta Delta http://www.investopedia.com/terms/d/delta.asp