it's like robinhood---you can't actually deposit/withdraw cryptocurrency. you can only get "exposure" to the market:
Can I transfer my crypto holdings between my SoFi Invest account and an external wallet?
No, but there’s a reason why. We take security seriously at SoFi Invest and by having a closed system we can better secure your crypto assets. In the future, we may consider adding the ability to transfer crypto into or out of your SoFi Invest account, but it isn’t a planned feature at this time.
https://www.sofi.com/invest/buy-cryptocurrency/Never heard of SoFi before, but after some research I found out it's a financial services company that started with providing student loans in 2011. It has annual revenue of $547M of which $126M is profit. Obviously the company changed a lot from a student loan company. Now it offers also mortgages, mortgage refinancing and personal loans, cash management accounts and an investment platform.
They never showed interest in cryptocurrencies before so this came as a big surprise.
they have a huge presence in the student/personal loan space. i actually almost applied for a grad school loan with them several years ago but found better rates elsewhere. it's interesting to see the direction they've moved in.....