Among the major cryptocurrency assets -- and perhaps all crypto coins -- Litecoin is most levered towards Bitcoin's success.
Statistically speaking, wherever Bitcoin goes, so too does Litecoin:
Since the second quarter of 2013, Bitcoin and Litecoin share a 98% correlation. On a YTD basis, this has dropped to nearly 86%. Still, it's a very strong correlation considering that other cryptocurrencies appear to be branching away from Bitcoin's ebb and flow.