Logging fresh one-year high, India's exposure to US government securities reached $101.7 billion as the country purchased nearly $10 billion worth bonds in just one month.
The holdings crossed the $100 billion-mark in February, the highest level in more than a year, as per the latest data available with the Treasury Department.
In January also, India's holding had hit a one-year high of $91.2 billion.
Since Prime Minister Narendra Modi-led government came to the power in May last year, the country's exposure to such securities have been on the rise. In May last year, the holding stood at $70.1 billion.
In February, Japan emerged as the largest holder of American government securities pushing China to second place.
Japan's holding stood at $1.224 trillion while that of China touched $1.223 trillion.
Among the BRIC nations, India is the third-largest holder of these securities after China and Brazil ($259.9 billion). Russia's exposure declined to $69.6 billion in February.
In the first three months of this year, US economy unexpectedly witnessed slower growth with the GDP expanding just 0.2%.
"Real gross domestic product -- the value of the production of goods and services in the US, adjusted for price changes -- increased at an annual rate of 0.2 per cent in the first quarter of 2015," the Bureau of Economic Analysis' advance estimated released on April 29 said.
In the 2014 fourth quarter, real GDP had increased 2.2%.