Investing legend John Templeton’s cautionary quote resurfaces as Micron and SK Hynix valuations surge on AI demand optimism.
Memory chipmakers Micron Technology (MU) and SK Hynix (SKHY) have seen record profits in 2026, driven by surging demand for AI-related chips. Prices have spiked as manufacturing capacity struggles to keep pace with the expansion of large language models and GPUs, fueling investor optimism about sustained growth.
The rally has led to speculation that the industry’s traditional earnings volatility may be over, with structural AI demand justifying higher valuations. However, the rapid rise in stock prices has drawn comparisons to historical market bubbles, prompting caution among some analysts.
John Templeton’s warning—”this time it’s different”—is being cited as a potential red flag for investors piling into memory chip stocks. The phrase historically signals overvaluation risks when markets deviate from long-term norms.