Seoul shares plummeted nearly four percent on Friday, ending a four-day winning streak, as fading expectations of a rate cut triggered a wave of selling.

The benchmark Korea Composite Stock Price Index plunged 159-point-06 points, or three-point-81 percent to close at four-thousand-eleven-point-57. The main bourse ended the week up 57-point-81 points, or one-point-46 percent, from the previous Friday’s close of three-thousand-953-point-76.

Analysts attributed the plunge to overnight losses on the tech-heavy Nasdaq Composite in the U.S.

Foreigners and institutional investors were net sellers of KOSPI shares, offloading two-point-four trillion won and 900-point-two billion won, respectively.

The market declined despite the release of a joint fact sheet about the recent South Korea-U.S. trade deal following a summit between the two nations in Gyeongju more than two weeks ago.

The U.S. has agreed to lower tariffs on Korean cars and auto parts from 25 percent to 15 percent and to maintain semiconductor tariff rates “no less favorable” than those applied to competitors such as Taiwan.

Seoul and Washington also signed a memorandum of understanding to facilitate South Korea’s 350 billion-dollar investment pledge, which includes 150 billion dollars for the U.S. shipbuilding sector.

In Seoul, most large-cap shares retreated.

Samsung Electronics and rival chipmaker SK hynix dropped five-point-45 and eight-point-five percent, respectively.

Battery maker LG Energy Solution slid four-point-44 percent, while Hyundai Motor lost two-point-15 percent.

Shipbuilder HD Hyundai Heavy Industries was among the few gainers, climbing three-point-17 percent on hopes for further shipbuilding deals with the U.S.

The tech-heavy KOSDAQ fell 20-point-47 points, or two-point-23 percent, to close at 897-point-90.

The South Korean won strengthened against the U.S. dollar by ten-point-seven won to trade at one-thousand-457 won as of 3:30 p.m. The Korean won rebounded from a near 16-year low after authorities pledged to stabilize the foreign exchange market.