You know the drill. When Bitcoin rallies hard, altcoins dump. When Bitcoin dumps, all the rest dumps too. But when Bitcoin is sideways, altcoins rally and some go their own price action.
Everyone in this subsection of Bitcointalk is waiting for altcoin season to come again. Some have already given up.
I will try to post my observations about the market relationship of Ethereum which is the current lead indicator of altcoin market health to Bitcoin's.
I think Bitcoin and Ethereum's price grows high at the same time. I find it evident during 2017's sudden increase on bitcoin's price where it almost reached $20000. There is no real evience that when bitcoin's price goes high altcoin's price goes opposite so we should observe more and see what's happening in the market during prosperous times of bitcoin. As the altcoin season comes, it would help if we are going to analyze the market during such so that we can be more strategic even after the altcoin season.