Semiconductor stocks surge to record highs as valuations and volatility spike

Chip equities have surged to historic levels, with the Philadelphia Semiconductor Index (SOX) climbing about 81 % in Q2 and 94 % year‑to‑date, the strongest performance since the late‑1990s dot‑com boom. Leading gainers include Micron Technology (+301 %), SanDisk (+764 %) and Intel (+257 %).

At the same time, the sector’s price‑to‑earnings multiple has risen to roughly 26‑times earnings, well above the long‑term average of 19 and nearing the extreme levels seen in 2024. The Cboe Semiconductor ETF Volatility Index has jumped about 83 % this year, matching peaks from spring 2025, while daily price swings have exceeded 10 %.

Analysts warn that the rally may be fragile. While hyperscalers such as Microsoft, Amazon, Alphabet and Meta continue to pour billions into AI‑driven compute, the surge in spending is not yet matched by earnings, prompting concerns over sustainability. Apple has already raised product prices citing higher memory‑chip costs, underscoring broader pressure on the supply chain.