I think Solana pumped due to some massive game projects that released too such as star atlas and many more. Their ecosystem is quite far from metamask extension but they are building their own system and other investors and whales are seeing how it got improved thats why they bought in. Its really amazing from a very low price now solana is kinda expensive. Only If I bought a lot during its early stage. Anyway thats my opinion and I think it could still grow more.
I think it's still a small pump despite the 2x increase, but maybe 100$ will be reached in the near future.
But it's true that there have been many big projects in it including including the sale of IDO which is now much in the interest of investors and it is running successfully just a few days before it, so there will be more investors holding SOLANA for the long term and also something in investing in new projects , so don't be surprised and this will be more the same as the BSC which now also has a bigger pump.