The won-dollar exchange rate is displayed on screen at a dealing room of Hana Bank in Seoul, Thursday. Yonhap

The Korean won weakened further against the U.S. dollar Thursday, due to the steady selling of local stocks by foreign investors.

The won was quoted at 1,555.8 won per dollar at 3:30 p.m., down 0.9 won from the previous session, with the exchange rate remaining at the 1,550-level for the second consecutive day.

The won opened at 1,552.3 won per dollar, up 2.6 won from the previous session, after remarks by U.S. Federal Reserve Chair Kevin Warsh that inflation expectations had moderated.

On Wednesday, the won hit its weakest level since March 5, 2009, slumping to 1,554.9 won to the dollar at the close of onshore trading.