There are too few LinkedIn shares trading on the public market. It is not that easy to get your hands on LinkedIn shares right now, even if you are willing to p

There are too few LinkedIn shares trading on the public market. It is not that easy to get your hands on LinkedIn shares right now, even if you are willing to pay market price. This artificially raises the stock price. Not really true. If you want to buy or sell a million shares right now, you're probably going to see that effect-- it's called "slippage" and occurs when you trade any stock in large quantity, but the market self-corrects soon after. At a few hundred or thousand shares for a decently liquid stock, slippage is not a real concern and the only cost of trading is the bid-ask spread, which is usually a penny or two.