Turkey's benchmark BIST 100 index dropped more than 5% as tensions with Iran intensified, triggering a regional market selloff and boosting volatility across emerging markets. The sell-off reflects growing concerns over energy supply risks and defense sector exposure.
- BIST 100 index declined over 5% on March 2, 2026
- Brent crude futures (CL=F) rose over 4% amid supply fears
- Energy firms lost an average of 7% in value
- Defense stocks, including Aselsan and Roketsan, dropped over 6%
- CBOE Volatility Index (^VIX) surged over 18% to exceed 24
- Escalating Iran-Turkey tensions triggered regional market instability
Turkish equities plunged over 5% in early trading on March 2, 2026, as geopolitical tensions with Iran escalated following a series of cross-border incidents near the shared border. The BIST 100 index, which tracks the country's largest publicly traded firms, fell sharply, reflecting investor fear over potential military escalation and its impact on regional stability. The decline marked one of the steepest single-day drops in the index since early 2024, underscoring heightened risk aversion among global investors. The sell-off was amplified by a spike in global oil prices, with Brent crude futures (CL=F) surging over 4% in response to fears of supply disruptions in the Middle East. Turkey, a key energy transit corridor, faces direct exposure to any disruption in oil and gas flows through the region. Energy firms listed on the Istanbul exchange, including state-owned Botas and private sector players like Tüpraş, were among the hardest hit, with their shares losing more than 7% on average. The broader market reaction extended beyond Turkey, with the CBOE Volatility Index (^VIX) rising over 18% to close above 24, signaling increased expectations of market turbulence. Defense sector stocks across emerging markets also saw sharp declines, as investors reassessed risks tied to regional military buildups. Turkish defense companies such as Aselsan and Roketsan experienced losses exceeding 6%, reflecting concerns over potential defense spending shifts and supply chain vulnerabilities. The rapid market reaction underscores how geopolitical flashpoints in the Middle East can trigger immediate financial repercussions, particularly in emerging economies with sensitive external balances and strategic geographic positions.