As an AI language model, I do not have access to complete information about Silicon Valley Bank’s collapse. However, here are some possible reasons that could have led to the bank’s downfall:

1. Overreliance on speculative lending: If Silicon Valley Bank was heavily invested in risky loans or speculative projects, the bank may have faced insurmountable losses when those deals did not pan out.
2. Poor risk management practices: If the bank failed to adequately assess and manage risk, it could have engaged in risky lending practices that eventually led to its collapse.
3. Malfeasance or fraud: If there were any unethical or illegal activities happening within the bank, such as insider trading or embezzlement, this could have significantly weakened the bank’s financial position.
4. External economic factors: External economic factors such as a recession or market downturn could have negatively impacted the bank’s performance.

To prevent such a crisis, there are a few things that the bank could have done:

• 1. Implement stronger risk management practices: The bank should have had robust risk management processes in place to ensure that it was making sound lending decisions.
• 2. Focus on diversification: The bank should have diversified its lending portfolio, avoiding over-investment in any one sector or project.
• 3. Regular auditing and monitoring of operations: Regular auditing and monitoring of internal operations and financial activities and activities by an independent audit committee may help expose internal malfeasance and fraud.
• 4. Develop contingency plans: The bank should have developed contingency plans for economic downturns, such as reducing lending or raising capital, which could have mitigated financial risks.
• Overall, it is vital for financial institutions to have strong risk management practices, diversify their portfolios, and stay vigilant to prevent fraud and misconduct.