I've read a number of books that emphasise taking partial profits. Conversely some mention adding to the position if it still has movement ahead of it.
I'm wondering then what do others here do? If you do the former above, then that is sizing down your position yeah? What is better, adding or taking?
I usually just let my trade run. Infact I've only ever added to a position once, all others I've just let run and closed out the whole position when satisfied.