I do not think there is any visible positive effect in the big alts price yet, look at eth it has suffered the same path down just like btc so at the moment we see only one trend in the market and that is down.
Obviously, not only BTC dropped its value. The entire coins were down and the market looks like a garbage, investors might be worrying today mate always remember cryptocurrency is a hidden gem. If the value increases then you are a millionaire.
When the Bitcoin experience fall, this will be good news for Altcoin. they will experience the triumph with the opportunity to be able to continue growing and attempt to replace the position of the Bitcoin. so being able to make great opportunity to continue to develop.