On July 2, CIG Shanghai fell 10.93% in regular trading, trading at HK$127.8/share, with turnover of HK$279 million. The decline was driven by a broad-based sell-off across the optical communications sector, compounded by profit-taking pressure following a period of elevated valuations.

The optical communications sector experienced severe systematic selling pressure on the day. Industry peer YOFC plunged over 16%, while Trigiant Group fell over 8%, dragging down sector constituents broadly. CIG Shanghai had previously triggered an abnormal trading volatility alert after its cumulative closing price deviation exceeded 20% over three consecutive trading days. At that time, the company carried a static P/E ratio of 319.04x and a P/B ratio of 11.12x, significantly exceeding the sector averages of 76.64x and 7.53x respectively. This extreme valuation premium created conditions for concentrated profit-taking, which amplified the magnitude of the pullback as holders rushed to lock in gains.

(The above content is based on publicly available market information, generated by a program or algorithm, and is intended solely as a stock movement alert. It does not constitute investment advice or a basis for trading decisions.)