Groupon called off an IPO roadshow slated for next week because of

Groupon called off an IPO roadshow slated for next week because of market volatility, the Wall Street Journal reported. The Internet coupons site is reassessing the timing for an offering on a week-by-week basis, the newspaper added, citing an unidentified source Some on Wall Street have questioned Groupon’s financial disclosures, while others are concerned the company’s rapid growth is starting to slow in North America. Groupon CEO Andrew Mason sent a memo to employees recently that was widely reported in the media, in which he blasted critics in the press and on Wall Street.