Recent activation of Lightning Network prototypes on litecoin's segwit is the most likely culprit. Just as planned 👌
Litecoin was one of the more stable currencies this August, with the coin price fluctuating between $42 and $50 for the vast majority of our Pre-ICO, until it started growing on August, 28th. While our analysis predicted $90 = 1 LTC for September 2017, which was the target month for Lightning Network activation, we didn't anticipate it to rise so quickly. Life threw a curveball and instead of working on LN developers had to fight the hard-fork attach of BCH and SegWit2x. So no lightning network, but crazy valuations instead.
We, honestly, cannot complain. This effectively doubles the value we're getting from Pre-ICO investments, allowing us to develop better products for our community.