Beware the 'Portnoy top': A former Wall Street chief strategist breaks down how the day-trading exploits of Barstool Sports' founder highlight an 'unholy speculative mix' infecting stocks

· *Barstool Sports founder David Portnoy has made waves in recent weeks for his rambunctious day-trading and encouragement of similar risk-loving investors. *
· *Yet Portnoy's actions point to a severe dislocation between stock prices and economic reality that risks a return to bearish territory, according to Peter Cecchini,...