SoftBank Group Corp. said Wednesday its group net profit in the April-June period jumped more than threefold to a record ¥1.12 trillion ($10.6 billion) from a year earlier — marking the best quarter for a Japanese firm since 2004 — boosted by a special profit from selling part of its stake in Chinese e-commerce giant Alibaba Group Holding Ltd.

SoftBank Group said its operating profit fell 3.7 percent to ¥688.82 billion in the three months that ended June 30 on sales of ¥2.34 trillion, up 2.8 percent on a consolidated basis.

The company logged the largest group net profit on a quarterly basis among 400 major firms listed on bourses operated by Japan Exchange Group Inc. since Nomura Holdings Inc. started compiling such data in 2004.