Treasury yields rose across the board today (the 2nd) in the wake of surging international oil prices and rising overseas interest rates.

At the Seoul bond market today, the yield on 3-year Treasury bonds closed at 3.930 percent per annum, up 5.2 bps (1 bp = 0.01 percentage point) from the previous trading day.

This is the first time the 3-year yield has broken past the 3.9 percent mark since July 24, when it recorded 3.959 percent based on final quotation yields.

The 10-year yield rose 4.7 bps to 4.418 percent per annum, also marking its highest level since July 24 (4.447 percent).

The 5-year and 2-year yields rose 6.1 bps and 4.0 bps, respectively, finishing at 4.167 percent and 3.761 percent per annum.

The 20-year yield climbed 5.5 bps to 4.614 percent per annum.

The 30-year and 50-year yields went up 3.0 bps and 2.5 bps, respectively, registering 4.657 percent and 4.563 percent per annum.

Foreign investors drove up yields by net selling 25,925 contracts of 3-year treasury futures and 513 contracts of 10-year treasury futures, respectively.

The primary impact came from a sharp spike in international oil prices as military tensions in the Middle East escalated once again following consecutive airstrikes and retaliations between the United States and Iran.

Overnight, international oil prices jumped by around 5 percent, surpassing the 90 dollar threshold.

West Texas Intermediate (WTI) crude futures for October delivery finished up 5.20 percent at 90.22 dollars a barrel on the New York Mercantile Exchange on the 1st (local time).

As concerns over inflation driven by high oil prices grew, the yield on U.S. 10-year Treasury bonds climbed 4.80 bps (1 bp = 0.01 percentage point) to close at 4.799 percent, reaching its highest level since January of last year.

The yield on Japan's 10-year government bonds rose 6.10 bps to 2.996 percent, breaking above 3 percent for the first time since 1996.

In addition, the yield on the UK's 30-year government bonds hit a high not seen since 1998, while the 30-year yields of Germany and France soared to their highest levels since 2011.

Choo Yong-gu, a researcher at Shinhan Securities, analyzed, "Oil prices have risen significantly as the war between the U.S. and Iran has resumed, and global interest rates, including those in the U.S. and Japan, are rising together," adding, "As external uncertainties are not expected to be resolved in the short term, bond yields could also maintain their upward trend for a while."