GLW
LONGINSIDER SELLCONGRESS SELLCORNING INC
Research: Finviz ↗·Perplexity ↗
🗄 Viewing archived Q1 2026 data — frozen, no longer refreshed.
News Summary
NegativeCorning delivered strong operational execution with Q1-Q2 2026 earnings beats, 18-17% core sales growth, expanding margins, and major multi-billion-dollar hyperscaler deals (Meta $6B, Amazon, NVIDIA partnerships) positioning it for its $20B annualized sales run-rate target by end-2026. However, the stock collapsed 46% in July after Q3 guidance of $4.9-5.0B sales and $0.85-0.89 EPS disappointed elevated Wall Street expectations, triggering a sharp valuation reset from 90x+ trailing P/E and raising concerns about sustainability of AI-driven growth.
Red flags
- •Stock declined 46% in July 2026 (worst monthly performance in 24 years) following Q3 guidance miss versus consensus despite Q2 beat
- •Valuation bubble evident: all-time high of $271.78 on June 30 collapsed to $146.59 by July 24 after guidance disappointed at elevated expectations
- •Insider selling of $54M+ by CEO and executives near peak with no offsetting insider purchases, raising corporate governance concerns
- •Solar segment posted $7M net loss in Q2 despite 90% sales growth, indicating execution risks in new growth initiatives
- •Guidance growth rates moderating (Q3 guidance implies ~16% sales growth vs. 18-17% in Q1-Q2, suggesting potential deceleration)
- •Heavy dependency on hyperscaler/AI customer concentration (Meta, Amazon, NVIDIA mega-deals) creates customer concentration risk
Funds Buying (3)
| Fund | Manager | Shares Held | ∆ Shares | Position Value | % of Fund | QoQ | Status |
|---|---|---|---|---|---|---|---|
| Lone Pine Capital | Steve Mandel | 3.7M | +3.7M | $506M | 4.0% | — | NEW |
| Maverick Capital | Lee Ainslie | 375K | +375K | $51M | 0.6% | — | NEW |
| Situational Awareness LP | Leopold Aschenbrenner | 5K | +5K | $1M | <0.1% | — | NEW |
Shares Held and Position Value reflect total quarter-end holdings. ∆ Shares is the change from the prior quarter. % of Fund is the position's share of the fund's reported equity portfolio — it drives the size weighting in the conviction score.
Portfolio Context
Where GLW ranks in each buying fund's book, and the positions immediately around it. What a holding sits next to often says more about the thesis than the position size does.
position #11 of this fund's book
- 8CARVANA CO$552M
- 9NU HLDGS LTD$546M
- 10MEDLINE INC$525M
- 11CORNING INC$506M
- 12CLEAN HARBORS INC$503M
- 13MASTEC INC$493M
- 14TAIWAN SEMICONDUCTOR MANUFAC$470M
position #25 of this fund's book
- 22HIVE DIGITAL TECHNOLOGIES LT$6M
- 23ASML HLDG NV N Y REGISTRY$6M
- 24MICRON TECHNOLOGY INC$6M
- 25CORNING INC$1M
- 26NVIDIA CORPORATION$0M
Values are quarter-end position sizes. Shown only for funds where GLW ranks inside their 40 largest equity positions — below that, neighbouring names carry no signal. Adjacency is an inference about a fund's reasoning, not a disclosure of it.
Signal History
| Quarter | Direction | Funds | Score | vs SPY |
|---|---|---|---|---|
| Q2 2026 | SHORT | 3 | 2.63 | -42.8% |
| Q1 2026 | LONG | 3 | 4.06 | +2.6% |
Same issuer appearing in consecutive quarters — persistent institutional conviction. Returns are frozen at each archived quarter's last refresh.
Insider Activity
| Name | Title | Type | Shares | Price | Value | Filed | Src |
|---|---|---|---|---|---|---|---|
| WEEKS WENDELL P | Chairman, CEO and President | SELL | 100K | $186.46 | $18.65M | 2026-06-09 | ↗ |
| Amin Jaymin | SVP and Chief Tech. Officer | SELL | 27K | $192.14 | $5.26M | 2026-05-22 | ↗ |
| Nelson Avery H III | Executive Vice President & COO | SELL | 20K | $195.93 | $3.92M | 2026-05-15 | ↗ |
| Verkleeren Ronald L | SVP Emerging Innovations Group | SELL | 10K | $207.77 | $2.08M | 2026-05-13 | ↗ |
| TILLMAN MICHAUNE D | SVP and General Counsel | SELL | 3K | $207.02 | $0.67M | 2026-05-11 | ↗ |
| Seetharam Soumya | Senior Vice President & CDIO | SELL | 20K | $206.23 | $4.12M | 2026-05-11 | ↗ |
| Zhang John Z | Exec. Vice President & CCDO | SELL | 10K | $198.34 | $1.98M | 2026-05-11 | ↗ |
| STEVERSON LEWIS A | Vice Chairman, EVP and CLAO | SELL | 28K | $196.06 | $5.44M | 2026-05-08 | ↗ |
| Gullo Michelle L | Senior Vice President & CHRO | SELL | 5K | $189.03 | $1.00M | 2026-05-08 | ↗ |
| Becker Stefan | SVP, Finance & Corp Controller | SELL | 21K | $188.08 | $3.95M | 2026-05-08 | ↗ |
| Schlesinger Edward A | Exec. Vice President and CFO | SELL | 23K | $186.08 | $4.20M | 2026-05-07 | ↗ |
| Zhang John Z | Exec. Vice President & CCDO | SELL | 15K | $184.67 | $2.77M | 2026-05-06 | ↗ |
Congressional Trading
| Member | Chamber | State | Type | Amount Range | Transaction Date | Filed | Src |
|---|---|---|---|---|---|---|---|
| Alan Armstrong | senate | — | SELL | $100,001 - $250,000 | 2026-03-27 | 2026-07-21 | ↗ |
Periodic Transaction Reports filed under the STOCK Act. Amounts are disclosed as ranges, not exact dollar figures.