Koppers Holdings Jumping 9% (KOP)

Koppers Holdings Inc. KOP shares are skyrocketing today, gaining almost 9% after news that the company would be replacing The Coopers Companies in the S&P SmallCap 600 index. At last check, shares of Koppers were up $42.32, a gain of $3.44 or 8.85%. Koppers Holdings Inc., through its subsidiaries, provides carbon compounds and commercial wood treatment products to aluminum, railroad, specialty chemical, utility, rubber, concrete, and steel industries.