As far as I can see, people started to sell all altcoins, including NEO. In general, my orientation is toward BTC. But altcoin brings nice profit at risk. And when I looked at the NEP5 deal, I saw that Neo would increase.
Neo will increase? I also think Neo will grow faster and now is the right time to buy Neo, because now the price of coins falls a lot, including Neo.
Prices go up and down but that's a natural thing. You should check frequently to find out more so you can make big profits.