Every 12 months, the editors of Art+Auction assemble a list of the individuals who have stood out in the art world over the last year, and publish our results as our Power List. On December 2, we published our Introduction, explaining the thinking that went into this year's list and our process of judging. Today, we offer the third of nine installments to be published on ARTINFO, a list of those who are putting together groundbreaking collections: “Power Collectors.”

To see Part 3 of Art+Auction's Power 2012, click on the slideshow.

For full coverage of the Power 100, visit the page here.