Stock market experts believe they’ve found the culprit behind dips on the Dow-Vanity Fair.

“Whenever Vanity Fair breaks a record for ad pages, the stock market crashes immediately afterward, according to a highly scientific study by “Short Takes.” Consider: VF’s March 2007 Hollywood edition (”Our Biggest Issue Ever!”) clocked in at 500 pages. During the week of Feb 26, 2007, the Dow Jones Industrial Average collapsed, from 12,647 to 12,114.”