CIFI Holdings Group Co. shares slumped as much as 53% in Hong Kong after trading resumed following a nearly six month suspension.

The move comes after the property developer issued delayed results for the first half of the year, reporting a net loss of almost 9 billion yuan ($1.2 billion). The stock was the biggest drag on a Bloomberg Intelligence gauge of Chinese builder shares, which is close to erasing all its gains since the reopening rally took off late last year.