YIDU TECH Inc. (HKG:2158) shares plummeted by 5.27% on Monday, November 12th, amid concerns over the company's high valuation and subdued revenue growth forecasts.

The healthcare services provider's stock had gained 45% over the past month and 31% in the last year, fueled by investor optimism. However, YIDU TECH's price-to-sales (P/S) ratio currently stands at 6.7x, significantly higher than the industry average of 4.6x in Hong Kong.

While a high P/S ratio can sometimes be justified by strong revenue growth prospects, analysts estimates suggest YIDU TECH's revenue is expected to grow by only 18% per year over the next three years, on par with the industry's forecasted growth rate. This has raised doubts about whether the company's elevated valuation can be sustained in the long term.