I am upgrading Duolingo to a neutral rating as recent growth and innovation balance out valuation risks, but caution is still warranted. Duolingo's expansion into new courses and strong user growth ...

Double-digit percentage declines in the benchmark S&P 500 and growth-centric Nasdaq Composite have hardly made a dent in the stock market's premium valuation. But history is quite clear that while the ...

Valuation increases surge in October, taking market valuation to a slight discount. Big gets bigger, and concentration becomes more concentrated. Style and sector dynamics: growth premium shrinks, ...