Foreign portfolios accounted for almost 49 percent of the total market capitalization of the Greek equities market in January, almost unchanged from December, according to data made public yesterday. Hellenic Exchanges (HELEX), the holding group that operates the Athens bourse, said foreign investors owned 48.9 percent of Greek stocks, versus 48.5 percent in December. Foreign investors were net sellers, with an outflow of 65.4 million euros and accounting for 55 percent of transactions on the bourse. The Athens bourse gave up 7 percent in the month, wiping 6 billion euros off stock values. In the same period, London’s FTSE index shed 3 percent while Germany’s DAX slipped 4.1 percent.