US Treasury yields sharply gave up gains after the US stock market closed, as investors closely monitor developments in the Iran situation.

The yield on the two-year US Treasury rose by 3.68 basis points to 3.8887%, quickly plunging from 3.94% to flat, approaching 3.84% after the US stock market closed. The yield on the 30-year US Treasury increased by 1.43 basis points to 4.9274%. The yield spread between the 2-year and 10-year US Treasuries narrowed by 2.513 basis points to +46.072 basis points. The yield on the 10-year Treasury Inflation-Protected Securities (TIPS) rose by 4.09 basis points to 2.0435%, plunging from 2.08% to 2.02% after the US stock market session; the yield on the two-year TIPS increased by 3.33 basis points to 0.6955%, at one point diving from 0.7105% to 0.6355%; the yield on the 30-year TIPS climbed 3.69 basis points to 2.7350%.