He said that many times in his second book. Do you guys agree and why?
Life is pretty simple for a trend follower (we're all pretty simple people). Something goes up, you buy it. If it starts to go down, you sell. You can have a stop loss as well, but it would be doing something pretty similar to the underlying rule - there's no conflict. You wouldn't use profit targets - whilst the trend continues you stay in.
If you're trading some kind of mean reversion, it's a bit harder. Should you for example use stop-losses, and/or profit targets?
Suppose you think the market's fallen too much and will rebound. So you buy.
Then the market falls:-
If you have a stop loss: You'll sell. But your trading rule will be saying buy back. Conflict.
If you don't have a stop loss: You'll do nothing, or perhaps buy more. Fine, unless you continue to be wrong.
Suppose the market rises:-
If you don't have a profit target: You'll stay in the trade. But your trading rule will be saying sell. Conflict.
If you have a profit target: You'll exit. But are you giving up profits if the trend continues?
It would be interesting to see VN's account curves. Did he bleed to death slowly (indicative of a lot of missed turning points and stops being hit), or make money consistently then blow up (suggests he didn't have stops).
I'm scratching my head about what you should do after hitting a stop loss, when we have a rule saying it wants to re-enter. I guess one thing that might make sense is to add a fast trend oscillator - when that turns back up again, then we rebuy. But then we're sneaking in trend following via the back door....
GAT
Niederhoffer made money selling options. This will produce a steady stream of small profits (since most options expire worthless) BUT from time to time, (very) large losses.
There is a good article on Niederhoffer and Taleb and their contrasting strategies in the New Yorker a few years ago, it may still be online. Well worth a read.
http://www.newyorker.com/magazine/2002/04/22/blowing-up