Btc halving helped moving price up as we all know. After every halving price move (bull run) ATL always has been more than last ATH. Numbers on the chart are ($) rounded for easy understanding. My predictions for 2019 December YATH would be just over or just under $21K how ever expecting the big run on or after May-June 2020. $175K BTC is the prediction and after could go back to $26 correction for the worse case scenario. However counting adoption of BTC, 2021 ATL could be well higher than predictions compare to previous years.