Why is Hertz stock crashing today?

Recent market activity shows a significant downward trend for several major companies. Hertz stock is currently crashing, while Sun Life Financial is experiencing a tumble in its share price. Similarly, Astera Labs stock is also tumbling today. These simultaneous declines across different sectors indicate a volatile period for these specific equities, as investors react to current market conditions affecting the valuation of Hertz, Sun Life Financial, and Astera Labs in today's trading sessions.