Corning Incorporated (GLW) Insider, 13F Hedge Fund & Politician Buy/Sell Thermometer

Per the Roarable RQD rating, GLW scores 54 out of 100 with a letter grade of D+, labeled "Roarable Sell — Weak Fundamentals / Trim." The five pillars are: Fundamental Cash Engine at 13 of 20 (ROIC 9.9%; FCF yield 1.79%); Whale 13F Flow at 7 of 20 (institutional accumulation and options positioning); Insider Conviction at 9 of 20 (SEC Form 4 and Congressional PTR cluster flow); Macro Regime Fit at 7 of 20 (Beta 1.02; sector sensitivity); and Forensic Balance Sheet at 18 of 20 (Altman Z 5.19; Piotroski F 9/9; Debt/Equity 0.66).

For a prospective investor, the composite reading is that the balance sheet is the strongest component, while the cash-generation yield, institutional flow, insider activity, and macro fit each score in the lower half of their ranges. The FCF yield of 1.79% and the TTM P/E of 69.6 indicate that the valuation rests heavily on expected future earnings rather than current cash returns; the forward P/E of 58.5 is still elevated, and EV/EBITDA is 40.8. Upside drivers would need to come from earnings growth that the source data does not project. The 52-week range of $77.39 to $271.78 shows substantial price volatility over the trailing year. The rating is a framework output from the source data and does not constitute personalized advice.

Per the SEC financials, revenue rose from $12588.0M in FY 2023 to $15629.0M in FY 2025, and net income increased from $506.0M in FY 2024 to $1596.0M in FY 2025. Per the market data, the operating margin is 14.6% and the ROIC is 9.9%. Per the Roarable RQD rating, the Altman Z-Score is 5.19 and the Piotroski F-Score is 9/9, with Debt/Equity at 0.66. Debt was $8401.0M at FY 2025 versus $14287.7M at FY 2023, while FY 2025 cash stood at $1526.0M.

• Earnings reaction: An Investing.com item headlined an earnings call transcript describing Corning as beating Q3 2026 estimates while the stock slipped. This is the only item flagged GREEN (CATALYST); the source data does not provide the estimate figures.
• Price moves: TradingKey reported GLW moved up 4.18% on Oct 6 and down 3.42% on Oct 8.
• Commentary: Seeking Alpha published an item headlined that Corning is "the right AI builder, just not a buy yet." Yahoo Finance reported that Jim Cramer backed the company's fiber story after a major stock decline.
• Market context: Per the market data, the stock closed at $128.88, down 1.77%, on volume of 8,215,804.
• Signals: The Butterfly Supply-Chain Graph reports no proprietary signals and no supply-chain links (supply_chain: NONE).

Per the Butterfly Supply-Chain Graph, supply_chain is NONE, butterfly_links is empty, and proprietary_signals is empty. No upstream or downstream dependencies, sector correlations, or second-order bottlenecks are identified in the source data. Investors should note that this absence reflects the absence of data in this dossier, not a confirmed absence of such relationships.

• What are the Q3 2026 revenue and EPS estimate figures against which the reported beat was measured?
• What products, end markets, and customers drive the $15629.0M FY 2025 revenue, and what is the segment mix?
• Why are EPS values reported as N/A in all three periods, and what is the reconciled per-share earnings trajectory?
• What drove the reduction in debt from $14287.7M (FY 2023) to $8401.0M (FY 2025), and what is the debt maturity profile?
• What institutional, insider, and analyst positioning exists, given that the holders and analyst sections are empty?