A total of 105 new Vietnamese projects were granted investment certificates, totaling US$177.5 million, or a reduction of 27.5% year on year.
Elsewhere, US$12 million was added to 20 existing projects, down 93% from the same period in 2023.
Vietnamese investors poured money into 15 sectors abroad during the reviewed period.
Mining topped the list with an investment capital of US$58.6 million, followed by processing-manufacturing with US$34.7 million, and wholesale and retail with US$30.9 million.
Among the 27 countries and territories receiving Vietnamese investment during the January to September period, the Netherlands took the lead with US$54.6 million, accounting for 28.8%.
Other leading recipients were Laos (US$43.5 million); the United States (US$41.8 million); Cambodia (US$21.8 million); and the UK (US$20.4 million).
As of September, Vietnam had 1,772 active overseas investment projects with combined capital of nearly US$22.11 billion, with 31.8% operating in the mining industry and 15.3% in the agro-forestry-fishery sector.
Laos was the largest recipient of Vietnamese investment at 24.9%, whilst Cambodia ranked second with 13.3%, the GSO reported.
