I wonder though how big the risk is. SVB is, according to the business press, in trouble because they parked a large excess of deposits over loans in low inte

I wonder though how big the risk is. SVB is, according to the business press, in trouble because they parked a large excess of deposits over loans in low interest rate US government debt. The mark to market value of that debt has fallen as interest rates have risen, but it's not like the bottom has fallen out. The bonds still retain 90+% of their value. Note that the capital hole SVB was trying to plug when the run started was that large relative to their deposits. If Brex is loaning a fraction of verified deposits, against the money those depositors will get back once a buyer is found for SVB, there shouldn't be that much risk. It's likely that depositors will get back most of their money - I don't think you'll see a fire sale, pennies on the dollar deal here.