Sibling Rivalry Erupts Into $160 Million Art Auction Showdown

In the art world, auction houses Sotheby’s and Christie’s are like squabbling siblings—more alike than different, yet always trying to one-up each other.

Next week in New York, the two rivals are vying to sell separate collections of contemporary art from two actual siblings—at virtually the same time. Perhaps fittingly in the circumstances, the two sisters aren’t on speaking terms.