The Kospi has experienced a significant drop, with some reports indicating it was the biggest daily decline in history, triggered by various factors including a setback related to MSCI and tax concerns. However, the specific causes of the drop are unclear, with some outlets citing the US-Iran conflict, a global chip sell-off, or market access concerns. The market's performance is uncertain, with one report indicating a recovery after a major fall, while others focus on the initial decline.