Adding to winners is much easier if you are swing trading as compared to day trading.
Personally I will not add to a position when it's marking down, but I will push a position that is marking up for me.
I saw RW, one of Ray Cahnman's floor traders, make $15M in six months on a Twos versus Tens Yield Curve Spread by adding to a winner. Pushed the living shit out of it.
YMMV, I wish everyone good fortune!
I think this is very true and why I made the comment earlier that perhaps it depends on the level of noise on your time frame. On a swing time frame there is much less noise and moves are cleaner. Intraday it's crap and within those daily candles of a winning breakout there could be several failed breakouts on the 1-5 min time frame that you don't see on that daily chart. BTW that is a wild story, I'd love to have one of those hail mary trades on occaison.
Did you take that trade? I took a long there on the open but I just scalped it. Where would your stop move to after those adds? It could dip below those consolidations and rip back up to a higher high, so you would still be right on the bigger picture but stopped on the add. Also it's very rare for ES to just keep ripping straight up like that on the open with only shallow pullbacks, from what I've seen. What I see more often is what happened today where it just fails back into chop, so that's why I scalped. Not that ES doesn't ever trend off of the open, but usually if it does, it has much deeper pullbacks than that, so I didn't feel right taking a trade on those. For those reasons to me it seems like hindsight bias, but if you did take that trade with those adds then I apologize.
Also it's very rare for ES to just keep ripping straight up like that on the open with only shallow pullbacks, from what I've seen.