Want to buy into a hot start-up? Here's how By: CNBC.com News March 10, 2015 at 10:57 AM EDT Just because start-ups like Kabam and ZocDoc are staying private longer than past tech companies, average retail investors aren't totally shut out. Read More >> Related Stocks: Gsv Capital Cp Hercules Technology Growth Capital Nasdaq OMX Group Oracle Corp Svb Financial Group Yahoo