If Bitcoin surges, shitcoins go up LESS.
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Depends on the coin but you are misinformed. If the marketcap is low it doesn't take much to move it significally more if bitcoin moves to 2x many altcoins will do 10x. That has happened in the past and now when bitcoin has such a high marketcap, moving it will be harder. And most investors move to lowcaps as they are not satified to make 2-5x with bitcoin. Then again ETH could flip bitcoin's marketcap and after that bitcoin will be a LOT less meaningful to markets.