"2022 saw a material deterioration in global investment banking fee pools and, as a result, we have had to reduce headcount in certain areas," the statement said.
The layoffs involve staff across multiple divisions within Nomura's investment banking function, after a year of muted dealmaking activity in the region, one of the two sources said.
In each of the bank's business divisions for equities capital markets, debt capital markets, corporate finance and Southeast Asia coverage, two to three workers were made redundant, according to the two sources.
Goldman Sachs (GS.N) last week sacked more than 3,000 people in its global workforce, with the investment banking and global markets division the hardest hit.
Pretax income for its wholesale division, which houses its trading and investment banking businesses, slid 19% year-on-year in the three months ending in September.