Thanks for the comment but actually that depends on one's philosophy and methods. The 20 is also below the 200, not just the 50.
As explained in my note, PBR is a long-term play in a growth portfolio. A position trade if you will, not a swing or momentum trade even though it could have been that to0, as evidenced by the 10% gain it made over the last 5 days.
It all comes down to strategy. The 20 below or above the 50 is for short-term trading not investing. Two completely different things. But people generally tend to confuse the two.
You sound like a momentum trader, meaning you buy strength. That's a good strategy and one that I use as well, to trade short-term - over hours or days. But then I also swing trade - buy support, sell resistance and hold for days to weeks.
And for some longer-term opportunities, I invest - like PBR, Gold, Oil, etc.