I have a theory, that some coins influence BTC price negatively,
In the past i felt that once XRP goes BULL, it stops BTC BULL
and now, i see once XRP was dumped after the airdrop, BTC went bull again
its not a coincidence. Whatever investment was put in xrp went directly to btc after spark launch. this is not the first time it happened, every time there is a major altcoin rally it is followed by small bitcoin rally once said altcoin dumps. There is a lot of interest in btc from what I have seen and its less volatile which explains why people see it as a safe haven.