Even in the 21st century, so far categorized by recessions and erratic markets, precious metals spent years hardly moving, as investors bet big on tech and growth stocks and avoided what have historically been considered safe havens. But now, typically boring hard assets, such as precious metals, are moving with the fury of meme stocks. First it was gold, which recently topped $5,000 per ounce. But now silver has also ripped higher and recently topped $100 per ounce. The iShares Silver Trust (NYSEMKT: SL ...