I have noticed that there are certain alt-coins that follow particular patterns/trends such as rising and falling in parallel with bitcoin-- and others that seem that move opposite to BTC, and some seem to be totally independent!! Obviously this can have a mjor impact to your trading strategy(s).
How do you classify groups or profiles of Alt-coins and what are the characteristics??
these are just interpretations, the big total reality is unknown to you so dont jump to conclusions just because of some drops of informatino