IPOs disappeared from US exchanges in September, as zero companies went public, down from eight a year ago. The drought marked the first month without an IPO since January 2009, during the height of the recession. Despite being shut out in September, strong volume in the IPO markets earlier in 2011 means that year-to-date IPO count remains slightly up year-over-year, with 99 deals in 2011, compared with 96 a year ago. US-listed YTD IPO proceeds are also up from 2010, nearly doubling to $29.6B in 2011 from only $14.9B last year.