This is a lie. Look at the 10K yourself. It shows the fair market value of AFS securities. Sure, it shows the purchase price for hold too maturity securities, but right God damn next to it it shows the fair market value and losses too. Silicon Valley Bank reported 15 billion in unrealized losses on there hold to maturity portfolio. They also clearly documented the different durations of those securities, and their annual interest yield.

The idea that this was somehow hidden needs to die. People knew they were vulnerable to a run not due to some shady rumor Network, but because they reported exactly what they were doing plain as day.

They were making low but positive interest profit on those assets. They simply locked up too much money in a long-term investment to withstand a coordinated Bank Run. This was a real mistake, but it is not at all about secret accounting.

Anyone who can do simple arithmetic could determine that they were at risk in a bank run from their published documents. Most of the world simply did not care because they did not think the Run would happen