Corning surges nearly 10% as tech hardware stocks rally

Corning Inc. shares surged nearly 10% on June 2, leading a rally in tech hardware and materials stocks tied to AI data center investment.

"The market is probing the zone where the prevailing positives driving stocks higher could cross the line into too much of a good thing," said Ed Clissold, U.S. equity strategist at Ned Davis Research. When year-over-year earnings growth exceeds 20%, the S&P 500 has historically returned about 2% annualized, he noted.

The Philadelphia Semiconductor Index jumped 69% in April and May, the largest two-month surge since the Internet bubble in early 2000, according to Renaissance Macro strategist Jeff DeGraaf. For the first time in this cycle, the firm's SERM reading on semiconductors is in the 95th percentile, confirming the outsized nature of recent returns.

S&P 500 earnings are now projected to rise more than 22% this year, up from 17% on March 31, largely driven by AI infrastructure spending and cloud services uptake. Yet the index's forward price-to-earnings multiple has compressed to 21.4 from above 23 six months ago, as investors price in the risk that companies may not sustain such rapid profit growth.

Corning's advance coincided with a broader environment of elevated investor optimism. Investment-grade corporate credit spreads have returned to cycle lows, showing that the cushion against adverse surprises has worn thin. The Cboe 3-Month Implied Correlation Index fell to levels last seen in July 2024, when a narrow rally in mega-cap tech stocks gave way to a 6% pullback. While the median consumer-discretionary stock is 8% off its high and the typical financial is down 6%, the broader market has shown little evidence of comprehensive macro stress.

This article is for informational purposes only and does not constitute investment advice.