The document advises caution towards five high price-to-earnings (PE) stocks that have recently yielded high returns but possess elevated PE ratios and low institutional holdings, suggesting they may be too risky for investment. Stocks discussed include PG Electroplast, Uniply, Alankit, HOV Services, and Energy Development, each with insights into their performance and reasons to avoid investment. Despite their past gains, the overall recommendation is to steer clear of these stocks due to their weak fundamentals and high valuations.