On June 30, Corning rose 3.31% in regular trading, trading at $265.38/share, with turnover of $703 million.

On the news front, Corning benefited from the FTSE Russell annual index rebalancing, having already surged 14.6% overnight, with passive fund inflows from the rebalancing continuing to push the stock higher. Simultaneously, Corning officially launched its next-generation glass optical interconnect component GlassBridge on June 28. The component uses waveguides within glass to directly connect photonic integrated circuits (PICs) with optical fibers, solving the multi-fold size mismatch between the two, targeting coupling loss below 2dB, and designed specifically for CPO and glass-substrate semiconductor packaging architectures.

Additionally, Corning has previously signed multi-billion-dollar long-term supply agreements with hyperscale cloud operators including Meta, NVIDIA, and Amazon. The market views this as a sign that value in next-generation AI optical interconnects is shifting toward specialty glass materials, further bolstering the company's valuation expectations.

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