No longer priceless
Investors will also want a clearer picture of how profitable Twitter is likely to be in the future. Unlike Facebook, which was making money when it went public, Twitter is still bleeding red ink. It lost $134m in the first nine months of this year, compared with a loss of $71m in the same period of 2012. The six year-old firm says it is still in expansion mode and that as it matures it expects to start pumping out profits. But much will depend on how successful it is at developing new ad formats that allow it to capture more of the $118 billion spent each year on digital advertising around the world.