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Monday, Jun 22, 2026

REAL ESTATE: ALETHEA HSU

PRESIDENT, DIAMOND DEVELOPMENT GROUP

WHY: Doctor by trade, owner of shopping mall-focused investment and development group based in San Gabriel. Crown jewel of family-operated firm, the H Mart-anchored Diamond Jamboree, opened in 2008 and is one of the busiest Pan-Asian shopping centers inthe county.

IN THE NEWS: Made its largest reported acquisition in September with the $77M buy of the 34-acre Raytheon campus in Fullerton, with potential longtime plans to redevelop the site for education or housing uses.

strong>NOTABLE: Surging foot traffic at Diamond Jamboree prompted parking expansion project in 2020. Other portfolio holdings include shopping centers in Rosemead and Rowland Heights, as well as the land underneath the Newport Beach Tennis Club.

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