Yes this pump is a real one. The pump from bitgrail back in december was just pure hype because of the listing news and etc. But right now the pump is from the unbelievable daily volume in binance that absolutely dominated most of the coins below rank 20. Sooner or later your top 10 prediction might come true when Okex traders and other exchanges starts recognizing $NANO.
Also note that this current volume placed us to Top 8 among all cryptocurrencies in terns of volume. https://coinmarketcap.com/currencies/volume/24-hour/. So if this thing continues for couple of months or more, we are very near.