Copper prices gained as much as 11% to trade above $14,500 a ton for the first time ever Thursday afternoon. Timna Tanners from Wells Fargo talks about the rally in metals and says copper shortages were expected. -------- More on Bloomberg Television and Markets Like this video? Subscribe and turn on notifications so you don't miss any videos from Bloomberg Markets & Finance: https://tinyurl.com/ysu5b8a9 Visit http://www.bloomberg.com for business news & analysis, up-to-the-minute market data,