I have btc. Is it possible for bitcoin to go up and eth and litecoin to go down? If one coin goes up, the other ones do? I assume the 2 coins with the most correlation would be btc and litecoin? Now imagine you own btc and had either eth and/or litecoin and sold it off or vice versa. Everyone would want the coin they hold to go up but i assume everyone wants the other coins they sold either stay the same or drop right?
Usually, ETH and LTC go with bitcoin in terms of the normal percentage of rise or fall. The only thing that affects the three is when there is an upcoming hardfork that affects the demand and supply of a particular coin.
The only currency that I can really depend on when the price of bitcoin is falling is Ripple (XRP), try to put your coins on ripple when you think BTC will go down as it is not affected by the price of BTC, a nice reason for it is because it is centralized. For the past weeks, ripple had a great and steady increase while bitcoin became crazy
somehow. The price started to went bad before Christmas and it is still down today.