The Tel Aviv Stock Exchange fell sharply in early trading on April 13 following the collapse of US-Iran negotiations in Islamabad, with the Tel Aviv 35 index down 1.5% and the Tel Aviv 90 index declining 1.8%. The insurance index underperformed the broader market, falling 2.5%.

The first direct high-level talks between Washington and Tehran since 1979 ended without agreement on April 12 after more than 21 hours of negotiations, with the status of the Strait of Hormuz emerging as the central obstacle. US President Donald Trump has since announced a maritime blockade on Iran aimed at halting its oil exports for as long as it restricts passage through the strait, effective 5:00 PM Israeli time.

Oil prices have crossed $100 per barrel following the announcement, lifting energy stocks against the broader market trend. The Tel Aviv Oil & Gas index rose approximately 0.7%, with Navitas, which holds assets including the Shenandoah well in the Gulf of Mexico, up 2.46%. Delek, Modi'in, Isramco, New Med, Tamar and Ratio were also trading higher.

The breakdown in Islamabad has renewed concerns that a prolonged US-Iran confrontation is increasingly likely, with Trump reportedly weighing a resumption of airstrikes alongside the blockade measures.

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