I would start buying them immediately. In the section below on technical analysis I will try to give you an insight or two and a semi informed guess at the timing question by looking at some of the current trends.
But I wouldn’t spend too much timing them here. We don’t exactly have a trading service dedicated to the space, so if that is your intent the best we can do is help inform you along the way by updating you on our recommended long term holdings above. Just remember to wade in, not plunge. Dollar cost average. Don’t buy everything you want now.
Do it in a few stages. Maybe five. By 1% at a time, for example, every month.