On March 26, 2026, U.S. Treasury yields rose as investors responded to uncertainty surrounding ceasefire negotiations between the U.S. and Iran, as well as disappointing demand in recent Treasury auctions [1]. The benchmark 10-year Treasury yield increased by more than 4 basis points to 4.3679%, while the 30-year Treasury bond yield rose by over 2 basis points to 4.926%. The 2-year Treasury note yield climbed more than 5 basis points, reaching 3.937% [1].
The market was unsettled by conflicting statements from Washington and Tehran over the past 48 hours regarding the status of peace talks. The U.S. claimed that negotiations over a proposed peace plan were ongoing, whereas Iran denied any direct interaction with Washington. Iranian Foreign Minister Abbas Araghchi stated that officials were reviewing an American proposal to end the war but emphasized that Tehran had no intention of negotiating directly with the U.S. He clarified that exchanging messages through mediators "does not mean negotiations with the U.S." according to Reuters [1].
Iranian state media reported that the Islamic Republic would reject a U.S. ceasefire offer and instead counter with its own five-point list, which would grant Tehran control over the Strait of Hormuz [1]. This development contributed to further increases in yields, as geopolitical uncertainty heightened risk aversion among investors.
Additionally, yields rose following the bond market's second disappointing Treasury auction of the week. Wednesday's $70 billion 5-year auction followed a poor $69 billion 2-year auction on Tuesday, which recorded its weakest demand since March 2025 [1]. Despite a quiet week for U.S. economic data releases, traders are expected to closely monitor weekly initial jobless claims data on Thursday afternoon [1].
CONCLUSION
Treasury yields rose sharply amid fading optimism for a ceasefire between the U.S. and Iran and weak demand in recent Treasury auctions. The combination of geopolitical uncertainty and disappointing auction results has heightened market volatility and risk aversion. Investors are likely to remain cautious as they await further developments in peace talks and upcoming economic data.