most of the traders have booked profit and almost sold their holdings are the indicators of the rise of prices of BTC in 2019.
I am very curious to know ow how you arrived at that conclusions about majority of traders 'booked profit'.
Depending on what strategy you have used, you could have possibly profited from Bitcoin this year. Shorting is one of the best ways to profit from the market, except it is linked to price drops.
Regular investors are most likely not satisfied with the current price which has remained firmly below the $3500 range.
There are not tools however, with which to make any speculation for 2019.