The PHLX Semiconductor Index added $5.7 trillion in market capitalization during 2026. Surging demand for artificial intelligence hardware fueled this massive rally.
A global shortage of high-performance memory chips drives the need for AI data centers and models. This demand pushed several chipmakers to historic valuations.
Micron Technology and South Korea’s SK Hynix surpassed $1 trillion market caps in late May. They join industry giants Samsung and TSMC in the trillion-dollar club. The semiconductor sector now holds a central role in the AI-driven market.