I don't trade stocks but hope to soon. My question to the experienced stock traders out there is: What would be the maximum position size in shares of a stock that one should hold in a trade in order to ensure that one could get out of the position with minimal slippage. I would imagine this would be some percentage of the daily volume that would be deemed to be safe. I was recently listening to a presentation where the presenter claimed to have positions of 50,000 shares that he was able to get out of without any liquidity issues. Unfortunately, I did not get any further details.