2018 good start for crypto but...

Hey guys 2018 started good enough for bitcoin and altcoins!!
but something is keeping bitcoin in the 10k range...
FUTURES!!!! yes bitcoin futures!!! i explain you why.
Well futures are basically contracts, so what they do is they sell you this contracts (promises) of bitcoin and they buy the actual bitcoins from exchanges so they can manipulate the price of it a bit!!
so basically when bitcoin goes up they sell the real bitcoins to bring the price down no matter what the futures is doing they only use it to capitalize and make moves on the real BTC.
hope you guys get this.