I am an investor, with 500 startups. Originally from Pittsburgh, went to CMU- tremendous love for the place. Will come to find great companies to give them money. I particularly look at FinTech but would love to look at other stuff. Drop me a line if I can be helpful. Not hard to find me.
airbnb dropbox stripe twitch weebly machinezone were all funded >5 years ago... Unicorns in the past 5 years are Instacart and Zenefits (there will surely be others). In general it is hard to measure performance of the entire portfolio, much easier to measure performance of a class.