Definition: In finance, a "coinfeftment" is a type of financial strategy that involves buying and selling securities with the intention of profiting from an increase in the value of those securities. This can involve buying stocks or other securities at a discount to their intrinsic value, then selling them at a higher price when they have recovered some of their initial investment. The goal of a coinfeftment is usually to capitalize on any significant price change that occurs during the period of trading.