Why are Sasol Ltd shares rising despite being labeled 'Significantly Overvalued' by GuruFocus?

Sasol Ltd (SSL) shares rose 4.7% to $13.71, reflecting a strong year-to-date and past-year performance; however, GuruFocus's GF Value™ estimates the stock's fair value at only $7.48 — less than half the current market price — indicating it is 'Significantly Overvalued', even though it holds an above-average GF Score™ of 61/100 for overall financial health.

What key warning signals does the article cite regarding Sasol Ltd's current valuation and investment outlook?

The article cites three main cautionary indicators: (1) GuruFocus's GF Value™ assessment of 'Significant Overvaluation' relative to its $7.48 fair value estimate, (2) a high P/E ratio compared to historical averages, and (3) weak momentum — all compounded by the absence of recent insider transactions, collectively suggesting investor caution despite the share price increase.