Apple Google NVIDIA Facebook Intel Netflix LinkedIn Oracle Tesla Sun Twilio Adobe Hewlett Packard AMD
Something that gives you the opposite of these returns: http://www.bloomberg.com/quote/BSVX:IND
Really though, [anything that loses half it's market cap](http://www.reuters.com/article/linkedin-results-research-idU...) in a span of a day should not be in your retirement portfolio, and lets face it, most of these 'growth' oriented startups that go IPO, are susceptible to those losses.
EDIT: Just to clarify. When I say growth oriented, I mean the companies that burn through money to get as many users as possible, without a clear monetization strategy(other than, we'll sell ads).
Snapchat sells ad space. That, to me, is not a sustainable business model. Ask traditional publishers how that model worked when the took it to the web. Won't work (in the long run) for Snapchat either. I think it's an entirely different class of business than AMD, Sun, Tesla, etc.
The answer is to have a well diversified portfolio so that you can capture the value of giants like Facebook and still not tie yourself to their long term prospects.
That's an exaggeration to put it mildly. Facebook is getting nearly all of their $22+ billion in sales from ads. They have practically no revenue diversification. Google is the same. So there's nearly a trillion dollars in market cap courtesy of ads.
The S&P500 by definition is not going to include any IPOs.
Likewise any sector specific fund, such as the REITs and what not.