Groupon (GRPN -7.6%) has given back all of yesterday's gains, as investors show their dismay...

|By:, SA News Editor

Groupon (GRPN -7.6%) has given back all of yesterday's gains, as investors show their dismay over 6 out of 11 IPO underwriters taking up neutral stances, often while citing valuation concerns. However, BofA and Barclays can be counted among the bulls: the former thinks Groupon will deliver healthy Q/Q growth in Q4, while the latter believes Groupon has "cracked the code" for using the web to drive local commerce.