Twitter officially became a publicly traded company as of this morning. Shares started at $45.10 per share, about 73% more than the $26 IPO price. The demand for the Twitter shares is huge. Investors are asking for 30 times the number of shares that are currently being traded. The downside of demand is that Twitter may have left money on the table. Twitter could have priced its IPO higher or offered more shares to raise more money.