Overstock.com (OSTK) traded in a narrow price range, between $14 and $18.50 for most of 2017 and then soared as its link to cryptocurrencies became known. In this case, there are a lot of well respected investors highlighting the potential.
Then there was LongFin Corp. (LFIN). It IPO'd (though not in the traditional way) and the stock quickly went from below $5 to over $140. It is currently at $50.
That was followed by what was than known as the Long Island Iced Tea Corp. (LTEA) and is now Long Blockchain Corp. and changed its ticker to LBCC. That stock, which trade below $2 on several days in early December surged to over $9 (I think it was even higher than that in the pre-market) and closed today at $5.80.
Each company is very different and I am not in position to opine whether the link to cryptocurrency is serious or not, but I do think these examples are worth looking at. If they are wrong - then this might be the beginning of the end of the bitcoin bubble. But if they are right - then they open up a whole new avenue to value generation.
While I question the ease with which these gains seem to occur, innovation is often that way. Eastman Kodak in particular has a long history of innovation, and the resources to develop and deliver solutions, so I cannot dismiss these gains out of hand.