SMIC shares plunged 5.21% during intraday trading, extending a recent decline amid heavy selling pressure in the semiconductor sector.

The decline is primarily driven by a sustained fund-siphoning effect from the mega IPO of CXMT (ChangXin Memory Technologies), which listed on the STAR Market on July 27 with a base fundraising of around 57.9 billion yuan. Institutional investors are reducing positions in liquid semiconductor leaders like SMIC to reallocate capital toward the newly listed chipmaker, whose post-listing market capitalization could reach 2 to 3 trillion yuan.

Additionally, southbound capital recorded net selling of over 20 billion HKD in SMIC on July 29, signaling significantly intensified selling pressure. The broader semiconductor sector remains under pressure, with peers such as HUA HONG GRACE also falling sharply, indicating the sector-wide fund diversion effect continues to weigh on stocks.