Why has Bitcoin gone up?
In my opinion, the price rejected a very strong Weekly support, which is the confluence with a backside Monthly support ($25200) (so it indicates that the movement will be a strong one up), as a target it formed a Weekly descending range trend.
Also, the current movement was compressed by another Weekly descending range trend, the moment it breaks it will generate a big reaction (which happened).
On the daily, again, the price rejects a critical support formed on 1h ($26637) (the movement is even stronger upwards, considering that it is above the Weekly range trend).
To see a much bigger increase, it is necessary for the price to consolidate above that weekly resistance from $29240.