Global Headwinds Hammer Indian Markets: Sensex, Nifty Plunge Amid Rising Yields and Geopolitical Tensions

Indian equity markets took a major hit on Thursday, with both the Sensex and Nifty plummeting over 1.6%, marking their sharpest one-day decline in roughly ten weeks. This broad-based sell-off saw the Sensex close down 1,247.71 points at 73,580.54 and the Nifty shed 383.70 points to end at 23,063.10, as surging global bond yields and a spike in crude oil prices sparked significant investor unease. Financial stocks were particularly hard hit, partly due to new regulatory proposals impacting the insurance sector. This domestic downturn is largely driven by a cocktail of international pressures, most notably the US 10-year Treasury yield climbing above 5% – its highest since 2007 – which tightens global borrowing costs and fuels expectations of further Federal Reserve interest rate hikes. Meanwhile, Brent crude prices surged to around $105 per barrel, exacerbated by intensifying US-Iran conflict that continues to disrupt global oil supplies and heighten geopolitical risk aversion. Despite the US Energy Information Administration reporting an unexpected rise in crude oil inventories for the week ending September 18, the broader market remains fixated on these inflationary and geopolitical headwinds. Eyes are now firmly on the ongoing meeting between US President Donald Trump and Chinese President Xi Jinping in Washington, where discussions on trade, technology, and global stability could offer some direction or further volatility. Domestically, investors will closely monitor how the proposed IRDAI changes affect the financial sector and the broader market's ability to absorb continued foreign selling, even as domestic institutional investors continue to show buying interest. The current environment suggests sustained caution as markets navigate a complex global landscape.