Bankruptcy of Silicon Valley Bank and Signature bank - difference

Did Silicon Valley Bank and Signature Bank bankrupt because of the same or similar reasons ?

Silicon Valley Bank

Its collapse was the largest bank failure in US (in terms of assets), since the collapse of Washington Mutual in 2008.

Its collapse was also the second-biggest bank failure in US history.

Before its collapse, it was the 16th largest bank in US.

SVB was primarily focusing on technology investments, venture capital-backed startup companies and high-tech sector.

There are usually multiple related reasons, that cause a bank collapse. Probably the main reason in case of SVB was a "Bank Run" or "Run on Deposits", which occurs when large number of customers withdraw their deposits at once.

But the run on deposits is the result of multiple preceding situations.

Also quite a high percentage of SVB's deposits was uninsured.

Signature Bank

Its collapse was the second-largest bank failure in US (in terms of assets), since the collapse of Washington Mutual in 2008.

Its collapse was also the third-largest bank failure in US history.

Before its collapse, it was the 29th largest bank in US.

Signature Bank was focusing on wide range of sectors, including the technology sector.

The reason of collapse is similar, run on deposits. Many of its customers withdrew their deposits at once. But there were multiple reasons that caused the run on deposits.

According to some analysts, the collapse of Signature Bank was partially casued by the collapse of SVB.