25% per year is so boring you can just sleep your way to doubling you're money every three years. (25% compounded for 3 years = 95.3% gain). Happy to bore myself stupid all the way to my retirement at that rate mate :)
Fisher funds trimmed their holding a bit recently. In a behind the paywall article on NBR they said their portfolio had become unbalanced with the recent strong run in SUM so they had to trim some to keep their self imposed allocations intact. The investment manager went on to say that they thought SUM was good value for the growth on offer. I gathered the impression they wouldn't be selling any more.