Samsung Electronics posted a first-quarter “super surprise” that beat market expectations, pushing South Korea’s KOSPI up more than 2 percent early on April 7 and above the 5,580 level. The KOSDAQ was also higher, rising more than 1 percent.

The KOSPI was up 138.86 points, or 2.55 percent, at 5,589.19 as of 9:29 a.m. It opened at 5,552.19, up 101.86 points, or 1.87 percent, from the previous session’s close, and extended gains.

Retail investors and foreigners were net buyers of 53.8 billion won and 12.2 billion won, respectively, supporting the rise. Institutions were net sellers of 97.9 billion won.

Top market-cap stocks were all higher. Samsung Electronics was up 3.52 percent at 199,900 won, while SK Hynix jumped 5.08 percent to 931,000 won.

Samsung Electronics regained the “200,000 won” level after its shares surged in the pre-market on news it delivered a first-quarter “earnings surprise” of better-than-expected results.

LG Energy Solution was up 1.45 percent, Hyundai Motor rose 2.03 percent, Hanwha Aerospace gained 0.34 percent, Samsung Biologics added 2.57 percent, SK Square climbed 5.13 percent, Doosan Enerbility advanced 1.36 percent and Kia rose 0.66 percent.

The KOSDAQ was up 18.11 points, or 1.73 percent, at 1,065.48 at the same time.

In the Seoul foreign exchange market, the won was at 1,506.50 per dollar in real-time trading, down 2.00 won, or 0.13 percent, from the previous session.