People were getting annoyed with the high fees and slow transaction times of Bitcoin. LTC is much faster, has cheaper fees, and has a higher cap on currency that can be mined. A few days ago Redditors on r/bitcoin (or maybe r/btc I cant remember) suggested people with these complaints switch to LTC. More and more posts started popping up to rally LTC. Some even mentioned that most coins had a tight correlation with Bitcoin, which LTC did not seem to have. If this were true, and Bitcoin were to crash, LTC would have the greatest chance of overtaking it. The next day LTC started to rise. Im not 100% sure of correlation, but I believe these reasons to be a part of the cause. It could also have to do with big name investors starting to research cryptocurrencies after CBOE went live, or something else entirely.

Because people are rediscovering why SEC rules exist one at a time.

Until a week or two ago the correlation between LTC and BTC was very loose, but it seems that now that BTC is cooling off other coins are warming up... But LTC has been doing pretty good for a year, so who knows... Definitely seems that people are buying more LTC because is cheaper. Maybe in the hopes that one day is going to be as valuable as BTC (of course that's not happening).

The cryptocurrency bubble is still attracting a lot of attention and people want to buy into something. Bitcoin's pretty broken right now so people are being told to buy litecoin instead.

Anecdotally yes FWIW.