I don't think altcoins are able to follow Bitcoin price movement lately. Recently there was news that whales are moving their money from altcoins to Bitcoin. This shows that people are losing hope from altcoins and BTC seems like a better option. This will further increase the market capitalization of Bitcoin which will further bring in more volume. So if BTC retraces its price, I don't think that will have much effect on altcoins which have already bottomed out.