Samsung Electronics, SK Hynix and Micron Technology each topped $1 trillion in market cap, eclipsing the combined value of the world’s top three oil firms.

The surge stems from AI’s hunger for high‑density memory. As demand for 3D NAND and advanced DRAM climbs, these chipmakers’ valuations now exceed the oil sector by about 22%, even with Saudi Aramco near $1.8 trillion.

Investors view the move as a sign that AI could redefine commodity hierarchies. If long‑term supply contracts hold, the sector’s stability will reinforce its premium, keeping memory chips a lucrative bet over traditional energy.

The shift signals a structural realignment: companies that feed AI’s computational backbone may command higher returns than fossil‑fuel giants.