Cylinder,
It’s simple. I have a sum of cash I use to buy when an opportunity pops up. The cash was in FNC and I was up 30%. Sold FNC and purchased PRB yesterday at bargain prices. When thing recover for PRB I will sell and hold for the next opportunity. I still have my core position in PRB, FNC, NOT, FWR and SPQ holding for the long-term prospects but I trade some regularly to take advantage of the swings. I sell my spares automatically when it appreciates 30% or more. This is a hard rule with no compromise.
rosehill