Trading is an art. Regardless how hard you trade to go fully systematic, the edges come and go very frequently, not enough to make huge profits to get rich from, if you found one (edge), which is also very hard. The correlation and cointegration thingy is hyped too. I tried it hard, it is not working longterm. Cointegration comes and go. And mean-reverting is hard to trade, you need to have a stoploss and then you RRR ratio per trade is not good so you need high win ratio. Trading is an art because the success or any edge is depending highly on discretionary elements, things you cannot backtest properly at all. My two cents (after spending 15 years fully systematic).
And one thing, this hype here for this "magic" bollinger band looking custom indi, forget it. There is simply no magic indicator or formula at all in trading.
Agreed. I think it's very difficult to design a completely systematic/mechanical system which beats buy and hold.
Honestly, the best thing anyone can do is to zoom out a bit and go for larger moves. Yes, your win rate may go down, but the risk/reward is there. I'm more of an intraday swing trader these days and I'm a terrible scalper (like most would-be-traders). I've had big, big days with a win rate well below 50 %. Very few people will achieve the required win rate and R/R ratio to be a consistent scalper.
As for 'edges' - there are definitely major patterns that work over time, i.e., the major move from A to B. That's the part that can be predicted with some accuracy. For example, today was a predicted Up Day on SPX. It's the zig zagging noise throughout the day during the move from A to B that's unpredictable. So, go long around the Open and hold through the noise all the way to the Day High.
