Stock price when the opinion was issued
Technology. He loves clean tech and innovations. He loves the lithium sulphur battery idea. Can you invest in this for the long run? Yes. The longer your investment horizon the more volatility you have to endure. You have to be able to handle the ride if you invest for 5 years. You should accumulate during the down times. There is a Lithium ETF: LIT-N.
Broad lithium play with LIT. Battery technology is the future. You want to buy on dips. For copper, COPX is a basket of copper focused fund. For broader precious metals, GDX would be his preference.