Silver hit a record high above $84 early Monday before dropping back to $70. It's still up over 150% for the year. The main driver seems to be aggressive buying from China and heavy inflows into ETFs. A Chinese silver fund actually had to turn away new customers because the risk was getting too high. There are some signs of it cooling off though. CME is raising margins on silver futures which makes holding positions more expensive. Technical indicators like RSI have been showing it's overbought for weeks.