KB Laminates (HKG:01888) saw its share price plummet 5.06% during intraday trading on Friday, marking a sharp reversal from its recent upward trajectory.

The decline follows a period of strong performance for the printed circuit board manufacturer. Analysis indicates the stock is trading at a price-to-earnings (P/E) ratio of 86.3x, which screens as expensive compared to both the Hong Kong Electronic industry average of 17.4x and the company's own estimated fair P/E of 30.1x. This significant valuation premium suggests the market had been pricing in aggressive future growth expectations.

With the stock trading well above analyst consensus price targets, the recent price action reflects investor concerns that the demanding valuation may not be sustainable, especially if there is any slowdown in earnings growth or a shift in market sentiment. The overvaluation warning highlights the risks associated with the stock's rapid appreciation in recent sessions.