hmm I do not know, I never thought bitcoin suitable for short-term investments. IMO bitcoin is always good in the late and mid year. for example, in 2017 bitcoin exploded at the end of the year, after the beginning of the year bitcoin back down. if you want to invest short term, i recommend ripple, waves, neo and litecoin. this coin has different uniqueness and advantages. this coin can also be your lucky coin. it's up to your decision bro!