Despite this, by June 2003 the 10 year Treasury yield continued to decline to a low of around 3.1%.

FORBES: What To Watch Out For In Treasuries

Yields on 10-year Japanese government bonds fell to 0.770%, the lowest since June 2003, after the central bank announced it would tweak its main policy tool, the asset purchase program.

WSJ: Slowdown Signals Sock Asia Markets

Safe havens were in demand, as shown by 10-year Japanese government bonds, which hit 0.79%, the lowest level since June 2003, closing at 0.815%.

WSJ: U.S. Data Dog Asia Markets