MOMENTA-W shares tumbled 5.02% in intraday trading on Monday, extending losses as the company’s post-IPO price stabilization mechanism formally expired. The decline adds to a string of recent selloffs that have left the stock well below its listing price.

The over-allotment option, which allows underwriters to support the stock by buying shares in the secondary market, was not exercised during the stabilization period and lapsed on August 2. With this safety net now removed, the stock has lost a key source of demand cushion, leaving it more vulnerable to selling pressure. MOMENTA-W has been trading below its IPO price of HK$295.6 since its debut on July 8, and the absence of stabilization support has further weighed on sentiment.

The stock had already declined sharply on July 31 amid profit-taking after a series of positive catalysts, including German L4 testing permits and a Robovan deployment. With the stabilization mechanism now withdrawn and the stock trading roughly 15% below its offering price, additional selling has materialized.