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Iran offensive posture lifts oil, spikes Treasury yields

8/18/2026

50 4 Full Breakdown

Summary

Story summary

After the truce ended and Iran adopted a fully offensive posture, oil prices rose in Singapore.
U.S. Treasury yields increased as the truce ended and Iran adopted an offensive posture.
U.S. 10-year Treasury yield rose to 4.728%, a two-decade high.
U.S. equities fell as the S&P 500 dropped 0.5% and Nasdaq slipped 0.3% while Brent crude rose to $91.06 a barrel.
Japan’s 10-year bond yield reached 2.945%, a three-decade high.

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Story summary

After the truce ended and Iran adopted a fully offensive posture, oil prices rose in Singapore.
U.S. Treasury yields increased as the truce ended and Iran adopted an offensive posture.
U.S. 10-year Treasury yield rose to 4.728%, a two-decade high.
U.S. equities fell as the S&P 500 dropped 0.5% and Nasdaq slipped 0.3% while Brent crude rose to $91.06 a barrel.
Japan’s 10-year bond yield reached 2.945%, a three-decade high.