Leonardo DiCaprio is looking to invest in some valuable art. The actor, in New York filming “The Wolf of Wall Street,” was recently spotted viewing Warhol’s “Flowers” at the Eykyn Maclean gallery on East 67th Street. Then he was at the Contemporary Art Auction at Christie’s, and watched as the $248 million sale set records. Sources tell us Leo “came through the exhibit on several other days with a posse of guys. He entered the sale hiding under a baseball hat with his cellphone glued to his ear.”