Wall Street Beat: Market stokes tech IPOs, as Tableau and Marketo debut

A strong stock market could open the floodgates for more tech IPOs in the wake of Friday's solid debut of Marketo and Tableau, but not all segments of IT may be able to ride the wave. Marketo, which sells cloud-based marketing software, jumped 78 percent to close at US$23.10, up $10.10 from its opening on the Nasdaq. Tableau, a business intelligence and data visualization company trading under the eye-catching ticker "DATA", rose 64 percent to close at $50.75, up $19.75 from its opening on the N...