I never, ever under any circumstances use a stop loss. I'm not recommending you don't use one. I don't use them because I have what in my opinion is a better strategy for handling unexpected drops in price. Usually, in the stocks I trade, those kinds of unanticipated price drops are only temporary in nature so, I cost average down after a careful reanalysis to ensure I still like the long side of the stock. Even if I decide to get out because I believe it will go lower. I can usually buy more shares back at a lower price and catch a bounce big enough to get me to breakeven. As a result, I very rarely lose money on a trade. If you want to see an example of how I traded out of a bad situation recently, check out the conversation starting at this link: http://investorshub.advfn.com/boards/read_msg.aspx?message_id=69289982
The charts of course are links so they update themselves and no longer contain the time frame that I originally posted but, following the conversation you will see that I traded out of the situation quite nicely and (in my opinion) with very little risk.