The trading halt on ICZOOM's shares, following a 91% drop, is a direct result of extreme volatility. Such a significant decrease typically indicates either a critical negative development within the company or a broader market reaction. The halt is a mechanism to prevent further immediate loss and manage market orderliness. Given the magnitude of the drop, the short-term impact is likely to be highly negative, reflecting investor panic or a sell-off, which could lead to further instability in the stock's price once trading resumes.