TFSAI hold STT in some other accounts but it also comprises almost 100% of two TFSA accounts. I think this kind of stock is tailor-made for TFSA - even when its main markets - oil and minerals - are soft, it manages to stay profitable, s/p has held steady and even in the absence of a tailwind, growth continues. Inevitably there will come a cycle in those markets that provides that tailwind - could really ramp up the s/p. So while not low-risk blue chip, blue chip doesn't provide the upside potential that is doubly rewarded in a TFSA (no tax on those hoped-for capital gains) - hope I'm right!