The total value of global investments in US Treasury bills and bonds declined until the end of last September.
And by 0.1 percent to 7.549 trillion dollars, compared to 7.556 trillion dollars in the previous month.
According to a survey of US Treasury data released on Wednesday, Japan topped holders of US bonds with $1.3 trillion in September, compared to $1.32 trillion in August.
In the second place, China came in with $1.048 trillion, compared to $1.047 trillion in the previous month.
China has been the largest investor in US Treasuries for years but has been outpaced by Japan as of June 2019.
After a trade war ravaged the economic relations between the United States and China.
In third place, the United Kingdom came with investments of 566.5 billion dollars, compared to 569 billion dollars.
Fourth, Luxembourg amounted to $311.8 billion, compared to $293.9 billion on a monthly basis.
Ireland came fifth with $309.4 billion, compared to 326.1 billion.
GCC investments in US Treasury bills and bonds fell 0.4 percent, on a monthly basis, in September to $240.7 billion.
GCC investments in US treasury bills and bonds amounted to $241.6 billion as of August.
Saudi Arabia came as the largest holder of Gulf states in US bonds, with investments of $124.3 billion until the end of September, compared to $124.1 billion until the end of last August.
The UAE came in second place, with total investments of $58.1 billion, compared to $58.7 billion in the previous month.
Kuwait ranked third with total investments amounting to $46.3 billion, then Qatar $6.1 billion.
In addition to the Sultanate of Oman, $5.4 billion, and Bahrain, at the bottom of the list, with $511 million.
What the US Treasury announces in its monthly statements is the investments of the Gulf countries in US Treasury bills and bonds only.
It does not include other investments in the United States, whether governmental or private.