On July 20, Corning rose 3.1% in pre-market trading, trading at approximately $159.51/share, with turnover of $10.31 million.

On the news front, TSMC's Chief Financial Officer stated that downstream chip markets continue to see multi-year super demand waves, with long-term structural AI demand sustaining a robust trajectory. The commentary boosted sentiment across the semiconductor and optical communications supply chain. UBS had also previously issued a forward-looking report expressing optimism on optical communications sector prosperity. The broader optical communications sector rallied in pre-market, with Lumentum up nearly 3%, Credo up over 2%, and Coherent up over 1%.

The rebound follows a sharp selloff earlier in the week after JPMorgan placed Corning on its negative catalyst watch list ahead of Q2 earnings scheduled for July 28, citing elevated valuations rather than fundamental concerns. Corning had declined approximately 38% from its late-June all-time high prior to this session. Market consensus expects adjusted EPS of $0.76 for the quarter.

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