Do not panic.
After hardfork (BTC and ETH), people will start buying altcoins back.
A little patience.
Bitcoin is growing. But this is not a flight to the moon in percentage terms in comparison with other altoin currencies.
The growth of the rate is caused by the interest of traders in the possible hardfork currency, Bitcoin Gold launch and talks around the support for SegWit2X technology. Experts predict the growth rate until October 25, after which a correction is possible.

I would agree that is likely true but nobody is certain what will happen. If BTC keeps heading up ($10k-20k) Alts could really go to shit, I mean really low back to ICO levels maybe even lower. I hope that doesn't happen but everyone should be prepared. Unless something for XEL is going to be announced soon, you never know what someone else is willing to sell at to pull BTC out.