Freeport’s stock fell nearly 16% after its plan to move into energy was announced Wednesday and investors, it appears, would have preferred it sticks to what it knows best. (Reuters) – Thursday , 06 Dec 2012 Freeport-McMoRan Copper & Gold Inc’s decision to diversify into energy highlights the dearth of attractive options available in copper, its main business, but few competitors are likely to follow its lead into unfamiliar territory.