I have been reading many posts here about the Chinese being the largest creditor to the US but here

[buzzard]

is what I last read regarding Treasury Securities. It seems Japan is the largest holder.

http://www.ustreas.gov/tic/mfh.txt

MAJOR FOREIGN HOLDERS OF TREASURY SECURITIES
(in billions of dollars)
HOLDINGS 1/ AT END OF PERIOD


Jul Jun May Apr Mar Feb Jan Dec Nov Oct Sep Aug Jul
Country 2008 2008 2008 2008 2008 2008 2008 2007 2007 2007 2007 2007 2007
------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------

Japan 593.4 583.8 578.7 592.2 600.7 586.6 586.9 581.2 590.9 601.7 591.9 595.8 620.6
China, Mainland 518.7 503.8 506.8 502.0 490.6 486.9 492.6 477.6 458.9 459.1 467.7 471.2 480.0
United Kingdom 2/ 290.8 280.4 272.5 247.8 201.1 181.1 161.9 158.1 174.3 155.0 120.3 99.8 67.3
Oil Exporters 3/ 173.9 170.4 164.3 153.9 150.8 146.1 140.9 137.9 138.7 141.6 137.1 134.7 134.7
Brazil 148.4 151.6 151.4 149.5 149.1 146.6 141.7 129.9 121.7 113.9 110.5 107.7 105.8