Nomura could miss out on the top spot for investment banking fees in Japan for the first time in over a decade, with just days left to close a gap on domestic rival Mizuho.

The bank is on course to finish second for Japanese investment banking revenues in 2012, according to Dealogic data for the year to December 19. It is currently 0.2 percentage points behind local rival Mizuho in market share, and a full two percentage points less than its share of the fee pot for the full year 2011.