Corning’s $670M Volume Slides to 175th in U.S. Rankings as Shares Dip 0.98% Amid Sector Shifts

Corning Inc. (GLW) declined 0.98% on September 25, 2025, with a trading volume of $670 million, ranking 175th in U.S. market activity. The glass and materials manufacturer’s share price movement reflected mixed investor sentiment amid sector-specific dynamics and broader market conditions.

Recent developments affecting Corning’s stock include adjustments in demand for optical communications components and evolving supply chain logistics. Analysts noted that while the company maintains a stable position in its core markets, near-term volatility remains influenced by macroeconomic indicators and sectoral benchmarks. The stock’s performance aligned with its historical pattern of moderate fluctuations in response to industry trends.

To run this back-test accurately I need to clarify two practical items: (1) Universe definition – which stock list should we rank by volume each day? (All U.S. common shares, a narrower index, or another criteria?) (2) Execution price – should trades assume buy at today’s close and sell at tomorrow’s close, or buy at next day’s open and sell at that day’s close? Once these parameters are defined, the portfolio back-test can be executed from January 1, 2022, through the current date.