This site can provide some idea of virtual currency activity, but cannot be relied upon. One example is http://coinmarketcap.com/asc_30.html, Just take a look. At no point did ASC crash and then rebound. Coinmarketcap makes it appear that the coin is increasing in value, when in fact it has done nothing but gradually decline for a few days.

Glitches like this (along with so many others) make this site a very unreliable source of information. All data really should be confirmed on the exchange; often an exchange will show the true story.