According to the General Statistics Office (GSO), 61 projects saw capital adjustment with additional investments of US$456.8 million, a year-on-year rise of 155%.
Disbursements are estimated at US$1.05 billion, up over 10% year-on-year.
In the month, there were 415 deals made by foreign investors to contribute capital to businesses and to buy shares of Vietnamese businesses with total capital of US$356 million, a year-on-year rise of 54%.
The GSO indicated that foreign direct investment (FDI) poured into new projects mainly concentrated on manufacturing-processing, with a registered capital of US$330 million, accounting for 74% of the total.
Total newly-registered and additional investments in the sector reached US$746 million in the month.
Among 24 cities and provinces receiving FDI in the first month of 2018, Ho Chi Minh City was on the top with US$86.2 million, followed by Nam Dinh (US$80.2 million), Ninh Thuan (US$60 million), and Binh Duong (US$36.7 million).
Among 23 nations and territories investing in Vietnam in January, Singapore was the biggest investor with US$147.7 million, followed by the Republic of Korea (US$70.4 million), Norway (US$70.1 million), and British Virgin Islands (US$51.4 million).