How stable is TIAA Bank?

I'm curious to know more about the stability of TIAA Bank. As a potential customer, it's important for me to understand how reliable and secure this financial institution is. Can you elaborate on TIAA Bank's financial health, regulatory compliance, and any recent or potential risks that may impact its stability? I'm also interested in hearing about any measures TIAA Bank has in place to protect customer funds and maintain trust with its clients.