Xining Special Steel shares surge 47% in four days

Xining Special Steel shares surged 46.81% over four consecutive trading days from July 21-24, hitting daily limits each session. During the same period, the steel industry index rose just 9.84%.

The company's price-to-book ratio now stands at 2.31, more than double the industry average of 1.01. Xining Special Steel confirmed no undisclosed information exists that would justify the unusual trading activity.