Geopolitical Tensions Fuel a Volatile Session for the S&P 500

US stocks whipsawed as Middle East fears spiked oil prices and hit growth stocks, before a partial rebound on diplomatic talks. Market breadth remains weak.

US equity markets experienced a turbulent trading session on Thursday, caught in the crosscurrents of escalating Middle East tensions and subsequent diplomatic developments. The S&P 500 index swung from steep losses to a partial recovery, illustrating the market's acute sensitivity to geopolitical risk and the security of global trade routes.

A Session Defined by Swinging Sentiment

The trading day opened under significant pressure. Comments from the US government hinting at a potential expansion of military action triggered a wave of risk aversion. Fears of supply disruptions sent Brent crude oil prices soaring past $110 per barrel at one point. This sell-off was broad-based, with approximately three-quarters of the stocks in the S&P 500 trading in negative territory during the session's lows.

A midday shift occurred following reports of diplomatic engagement. News that Oman and Iran were holding talks aimed at securing shipping through the critical Strait of Hormuz provided a catalyst for a rebound. This development allowed the index to pare its heaviest losses, climbing from an intraday low of 6,474.94 points. Despite the partial recovery, market anxiety remained elevated, as evidenced by the VIX volatility index—often called the market's "fear gauge"—jumping to nearly 24 points.

Sector Performance Reveals a Split Market

Beneath the index-level moves, a stark sector divergence unfolded. Unsurprisingly, the energy sector advanced as a direct beneficiary of the oil price shock. In contrast, growth-oriented and healthcare stocks faced pronounced selling pressure.

Tesla shares dropped more than five percent after the electric vehicle maker's first-quarter delivery figure of 358,023 vehicles fell short of market expectations. The healthcare sector faced additional headwinds from reports discussing potential import tariffs on pharmaceuticals, weighing on major constituents. Shares of Eli Lilly and Amgen each declined roughly two percent. Notably, Nvidia managed to stabilize the technology sector later in the afternoon. After a volatile start, its shares closed with a gain of 1.3 percent.

Technical Levels and Underlying Weakness

From a technical perspective, the S&P 500 managed a successful defense of its 50-day moving average, situated at the 6,503-point level. However, market analysts point to concerning breadth data. Currently, only about 28 percent of index constituents are trading above their own 50-day trend lines. This discrepancy highlights that the market's recovery is being driven by a narrow group of heavyweight stocks, rather than widespread participation.

The prevailing sentiment, as measured by the "Fear & Greed Index," remains firmly in "extreme fear" territory with a reading of 13. With US markets closed for Good Friday, investor attention is now fixed on geopolitical developments over the Easter weekend. The S&P 500 enters the new trading week down 4.63 percent for the year. Market participants widely view a sustained breakout above the 200-day moving average, currently at 6,695 points, as a necessary signal for a durable recovery to take hold.