The presence of South Korea's top 10 conglomerates on the local stock market decreased through October this year, though their total market capitalization gathered ground, data showed Monday.

The combined market cap of the top 10 conglomerates reached 750.68 trillion won ($707.3 billion) as of Wednesday, up 1.63 percent from end-2012, according to the data compiled by the bourse operator Korea Exchange (KRX).

The figure represents some 57.08 percent of the aggregate market capitalization of the firms listed on the main bourse, down 1.34 percentage points from end-2012, the data showed.

Hyundai Heavy Industries Group, the world's biggest shipyard, was the biggest gainer with its market cap reaching 25.4 trillion won on Wednesday, up 18.4 percent over the cited period, the KRX added.

SK Group, the country's No. 3 conglomerate, posted a market cap of 79.6 trillion won on Wednesday, the second-largest growth over the cited period at 16.24 percent.

Hyundai Motor Group, the world's fifth-largest automotive firm, posted a market cap of 151.1 trillion won, up 11.07 percent from the 136 trillion tallied in end-2012.

Samsung Group, South Korea's top conglomerate with Samsung Electronics Co. under its wing, meanwhile, boasted the biggest market cap of 332 trillion won as of Thursday, which edged down 1.77 percent from end-2012.

Hanjin Group, a leading shipping conglomerate, posted the biggest losses in market capitalization over the cited period at 25.27 percent to reach 3.9 trillion won. (Yonhap News)