Speculative Buying Threatens Market Rally, Cramer Warns

CNBC's Jim Cramer warns investors about the dangers of buying speculative stocks in the current market rally. He explains the life cycle of a rally, starting with strong companies and gradually expanding to other sectors. However, he cautions that excessive speculative buying can lead to a sell-off, particularly if the Federal Reserve indicates rate hikes. Cramer identifies Affirm Holdings as a "poster-child" for this late stage of the rally and advises investors to take profits. He also mentions other stocks in the speculative cohort, including Roku, Upstart, Carvana, and Coinbase. Cramer urges caution and highlights the risks of a market downturn if speculative frenzy continues.