Berkshire Hathaway class A stock (NYSE symbol BRK.A) is the highest-priced stock in the world. As of January 25, 2008 one share of that stock will only set you back a cool $139,100. On the other hand, shares of Berkshire Hathaway class B stock (NYSE symbol BRK.B), or "Berkshire Babies" as they are often called, currently cost a paltry $4,630!