The SEC could be the reason behind it. Also, we are seeing that a lot of countries are accepting this coin, and that could lead to an increase in demand which will lead to an increase in price. But whatever the reason is, it is a good thing.
Market is Volatile, anything can happen at any given time, price value on the market can goes up and goes down dependent on the Volume of investment by the investors in the market, Bitcoin remain number one on the market, with good fundamentals, stable market structures, and with high level of confidence by the investors in the market, this indicates that Bitcoin is the most stable coin among all the ALT coin in the market.