Memory‑chip frenzy has vaulted technology equities, sending the S&P 500 up 16% in April‑May. The surge matches only four other two‑month climbs since 1950, according to Dow Jones data. Investors see the rally echoing the dot‑com boom, prompting renewed appetite for AI‑linked hardware.

Analysts trace the surge to soaring demand for high‑bandwidth memory used in generative‑AI models. Companies that produce these components have outperformed the broader market, dragging the index to one of its strongest two‑month runs on record. Historical patterns suggest that each comparable surge left the index higher six months later by a median 17%.

The rally reshapes sector weightings, with chip makers now accounting for a larger slice of the S&P 500’s gains than any other industry in the past quarter. Portfolio managers are reallocating toward AI‑related hardware, betting that supply constraints will keep pricing power intact.

Wall Street’s optimism hinges on the expectation that AI workloads will sustain chip demand beyond the current hype cycle. With earnings season approaching, firms that can translate capacity expansions into revenue growth are likely to validate the rally’s momentum.