Bear market probably ended, but has bull market started?

Some altcoins regained grounds this week more than Bitcoin. Personally, I see this as "recovery" from an extremely oversold condition more than "bull run". The volume is rather low.

I would say that Bitcoin will be the one leading at least the first stage of the bullish cycle, and I don't think it has begun just yet.

Retesting of some of the previous levels are very likely.