While Ethereum and Ripple made new highs last week, Litecoin made a multi-year high today of about $36.15 according to WorldCoinIndex.
This is most likely related to the activation of Segwit on Litecoin.
https://www.reddit.com/r/litecoin/comments/6adpet/segwit_has_been_activated/
I am not a cryptocurrency expert, and I don’t even know what Segwit is.