It's almost 8 months of 2018 and we have not seen any reasonable hikes for the altcoins,
It was only Ethereum that hit a good value of almost 1.4k$ in the beginning of the year . Since then it's pretty dull.
Forget overtaking can any ALTCOIN ever reach a value near Bitcoin.
As simple as easy, Bitcoin will not going to be surpassed by altcoins. Bitcoin is still the greatest investment, you can easily see it on its market cap and market value, there's no doubt that it just runs like a bull when the bull market is coming.