AUGUR just got a Binance listing, currently the most popular crypto exchange as you know.
It's very typical for new coins to explode in price after such a listing, and they will trade with high volatility for a while after that as well...
If that's the only reason then everyone should expect the dump to occur anytime hehe. The Augur development team has been
developing their prediction market platform for years now without any public releases. But they do have a closed beta.