There is no certain factors in here. Because there is no certain rules in market. We can talk about here all day long. But we always decide that everything is various. Sometimes a good news can rise altcoins but sometimes more than 10 news can't help.
So here we are. Market is full of risks. You have to be always careful. We all have to. But with some luck, everything will be good.
Although there are no specific rules on the market but we must pay attention to many factors in choosing coins, do you not pay attention to those factors? means you choose careless coins.
I myself have a standard in choosing coins and have many factors in speculating, one of which is seeing the trend of bitcoin. Yes, because bitcoin affects the altcoin price so when I want to choose altcoin, I have to look at the market trend first, then after that I use some of my standard factors in choosing coins.