of the vc firms, kliner perkins has backed the most ipo companies including mobile payment startup square and intel tops the list with investments including crowd storage and sharing service boxed, but which companies make it to the new york stock exchange and nasdaq will depend not just on revenue and growth, but also on the markets. >> if the markets are general term, the window the companies may see they have closes, so i think that's probably the biggest thing. you know, i think the other thing is there is lots of money, private money for these companies, right? so the need to go public has also diminished a bit. so i think companies are choosing to wait, choosing to get the timing right. >> reporter: but for now, with twitter shares at an all time high up more than 110% from the ipo price, the market is looking ripe for the crowded pipeline. i'm julia boorstin in los angeles. >>> coming up on "nightly business report", regulators are considering rules to let travelers talk on cell phones on flights, but is that what the flying public wants? >>> mexico approved a historic energy bill