GLW · Corning
Conviction · Low · more likely to lag the S&P 500 over the next three months
Wrong if: a daily close above $138.43
Note written ·
Price against the kill line
17.6% clear of its kill line on the 13 November 2026 close.
How to read this
This note expects the shares to lag the market, so its kill line sits above the price: a close above the red mark would prove the view wrong. Prices run from low on the left to high on the right. The dot is where the stock closed on 13 November 2026, left of the mark while it is below the line; a dot right of the mark has closed through it.
The scale is stretched near the line, so close calls are easy to see. More than 8% from the line, the stock reads well clear, with a hollow dot to show the figure is off the drawn scale.
The kill line is the research note's own test. The portfolio sells on business facts, not on a price. How the portfolio decides
Three months against the kill line
Daily closes, to . Red: the kill line, a daily close above $138.43, on record since 11 November 2026. The shares are down 33.9% since the close; the S&P 500 is down 2.1% over the same sessions. Figures in the note can cover a different window.
Kill line
A daily close above $138.43, the 15 October 2026 close and the highest of the 20 sessions to 6 November 2026, which would show the shares leading the S&P 500; Q4 2026 core sales above the $5.3 billion top of guidance would also prove the call wrong.
Research onlyNot in the portfolio.
Key figures from the filings · Materials
Quarter to 30 September 2026, filed 29 October 2026; valuation at the 13 November 2026 close
- Revenue, latest quarter ($M)
- 4,855
- Revenue, change on a year (%)
- +18.4
- Gross margin (%)
- 37.3
- Operating margin (%)
- 18.8
- Net cash, cash less debt ($M)
- −5,663
- Price to earnings (×)
- 45.7
- Enterprise value to sales (×)
- 5.9
- Enterprise value to operating income (×)
- 35.6
All filed numbers
What Corning reports to the SEC in its quarterly and annual filings. Each group states its period and filing date once; a figure dated otherwise says so. Built from the filings known on .
| Quarter to | Revenue ($M) | On a year (%) | Gross margin (%) | Operating margin (%) |
|---|---|---|---|---|
| first filed | 4,855 | +18.4 | 37.3 | 18.8 |
| first filed | 4,505 | +16.6 | 36.1 | 15.5 |
| first filed | 4,144 | +20.0 | 36.9 | 15.4 |
| first filed | 4,215 | +20.4 | 35.5 | 15.9 |
| first filed | 4,100 | +20.9 | 37.1 | 14.4 |
| first filed | 3,862 | +18.8 | 36.0 | 14.8 |
| Pre-tax income ($M) | 968 |
| Net income ($M) four quarters: 2,150 | 680 |
| Diluted shares, change on a year (%) against the quarter to 30 September 2025 | +0.3 |
| Operating cash flow ($M) | 4,192 |
| Capital spending ($M) | Not reported |
| Free cash flow ($M) | Not available |
| Cash and short-term investments ($M) | 2,537 |
| Debt ($M) non-current long-term debt and finance leases plus current debt | 8,200 |
| Net cash, cash less debt ($M) | −5,663 |
| Deferred revenue ($M) +145.5% on a year | 2,700 |
| Backlog, orders not yet delivered ($M) | Not reported |
| Receivables ($M) | 3,101 |
| Inventory ($M) | 3,646 |
| Shareholders' equity ($M) | 13,671 |
| Market value ($M) | 98,269 |
| Enterprise value, market value plus net debt ($M) | 103,932 |
| Enterprise value to sales (×) | 5.9 |
| Enterprise value to operating income (×) | 35.6 |
| Price to earnings (×) | 45.7 |
| Price to book value (×) | 7.2 |
| Free-cash-flow yield (%) | Not available |
Short interest (FINRA, settled 15 October 2026, published 26 October 2026): 1.9% of shares outstanding sold short, 2.0 days of average trading to cover, −5.0% since the previous report.
| Window | Bought | Sold |
|---|---|---|
| 90 daysfrom | $0 | $3.5M |
| 12 monthsfrom | $0 | $98.1M |
The thesis
Corning's shares are more likely to lag the S&P 500 over the next three months, even though its fiber business is growing faster than the company guided. The shares are moving with a broad sell-off in AI-infrastructure equipment stocks rather than with Corning's own results. The Q4 2026 report, expected around 27 January 2027, is the next business test.
Corning reported Q3 2026 core sales of $5.08 billion on 27 October 2026. That was up 19% and above its $4.9–5.0 billion guidance. Optical Communications sales were $2.38 billion, up 44%. The shares still closed at $120.46 on 11 November 2026. That is 55.7% below the 52-week intraday high of $271.78 set on 30 June 2026, and the shares are down 23.9% over three months.
The stock-sale worry has not materialised so far. Corning's Q3 Form 10-Q, filed 29 October 2026, says no shares were issued under the $2 billion at-the-market programme through 30 September 2026. Its cover reports 861,401,106 shares outstanding on 23 October 2026. The whole $2 billion is still available, so the potential supply remains.
As of the 11 November 2026 close, the price sits between Bernstein's $120 target, cut on 9 November 2026, and Jefferies' $134 target, set on 11 November 2026. On that evidence, the market is paying for the Q4 guidance and giving little credit for the 2030 sales goal. The rating is Low for three reasons. The shares are below both their 50-day and 200-day averages. The newest targets sit close to the price. And a beat-and-raise quarter did not stop the decline. Core sales are a company-adjusted measure outside generally accepted accounting principles (GAAP); Q3 GAAP sales were $4.86 billion.
Bullish and bearish views on Corning Incorporated
The bull case on Corning Incorporated (GLW), in brief: Q3 beat the company's own guidance. The bear case: the shares fell after the beat.
Bull case
- Q3 beat the company's own guidance. Corning reported core earnings per share (EPS) of $0.91 on 27 October 2026, up 36% and above the $0.85–0.89 range it guided on 28 July 2026. Core sales of $5.08 billion also beat the guided range.
- Q4 guidance points to continued growth. On 27 October 2026, Corning guided Q4 core sales to $5.2–$5.3 billion (up about 19%) and core EPS to $0.96–$1.00 (up about 36%).
- No stock has been sold under the programme yet. The Q3 10-Q, filed 29 October 2026, states that no shares were issued under the at-the-market programme in the three or nine months to 30 September 2026.
- Cash generation is strong. Corning reported adjusted free cash flow of $661 million in Q3 2026 and $2.27 billion for the first nine months.
- Capacity is still being added. On 10 November 2026, Corning opened an optical connectivity facility in Pune, India, and began trial production of cover glass in Chennai. On 27 October 2026 it set a goal of doubling its annualised sales run rate from $20 billion to $40 billion by the end of 2030.
- New coverage leans positive. Jefferies started coverage with a Buy rating and a $134 target on 11 November 2026. A 5 November 2026 news headline reported that Fox Advisors upgraded Corning to Outperform.
- Carrier contracts give multiyear visibility. Verizon (8 September 2026) and AT&T (29 September 2026, more than $3 billion) signed multiyear fiber agreements that run into 2027 and beyond.
Bear case
- The shares fell after the beat. Benzinga reported the shares at $126.65 on 27 October 2026, the day of the report. They closed at $118.77 on 4 November 2026 and $103.43 on 5 November 2026.
- Targets are moving toward the price. Bernstein kept its Market Perform rating and cut its target to $120 from $140 on 9 November 2026. Jefferies' new Buy target of $134 sits modestly above the 11 November 2026 close.
- The unused programme still caps rallies. The 11 September 2026 equity distribution agreement with Goldman Sachs allows up to $2 billion of stock sales. The shares fell about 12% intraday to $145.61 on 14 September 2026 when it was disclosed. Any sales would show up only in later company filings.
- AI-equipment stocks are being sold as a group. A 10 November 2026 headline grouped Corning with Caterpillar as the AI "picks and shovels" trade fell.
- Rates remain a headwind. Benzinga reported the Federal Reserve's first rate hike since 2023 in the week to 18 September 2026, with the 10-year Treasury yield touching 5.04%.
- Officers sold near $150. SEC Form 4 filings show the chief legal officer selling 13,100 shares at $151.29 on 28 August 2026 and the chief human resources officer selling 9,874 shares at $152.29 on 4 September 2026.
- Warrant dilution is disclosed. The 8 May 2026 NVIDIA warrant covers up to 15 million common shares at a $180 exercise price, plus 3 million pre-funded shares.
Price setup
The shares closed at $120.46 on 11 November 2026. As of that close, the 50-day moving average was $142.6 and the 200-day moving average was $156.11. The price is below both, and the shorter average is below the longer one, which is the pattern of a downtrend.
The recent low close was $103.43 on 5 November 2026, down from $118.77 the session before. The shares then closed at $106.13 on 6 November 2026, $115.95 on 9 November 2026 and $112.13 on 10 November 2026. They rose to $120.46 on 11 November 2026, the day Jefferies started coverage and optical names rallied on CoreWeave's results.
The three-month reference close was $158.54 on 13 August 2026. The 52-week closing low was $78.03 on 20 November 2025, so the shares still trade above where they started the AI-fiber rally. The mid-October closes and the 50-day average mark the area the shares would have to recover to show they are leading the index again.
Corning last reported on 27 October 2026, so no earnings report falls before late January 2027. The stock goes ex-dividend on 13 November 2026.
Catalysts ahead
- ~9 December 2026 (est.): Federal Reserve rate decision. A further hike with the 10-year yield near 5% would press on high-multiple equipment shares regardless of Corning's results; a cut would ease that pressure.
- ~27 January 2027 (est.): Q4 2026 results and 2027 outlook. Tests core sales against the $5.2–$5.3 billion guidance and shows whether the carrier contracts and new capacity lift 2027 expectations.
- ~11 February 2027 (est.): 2026 Form 10-K filing. The first filing to show whether any stock was sold under the at-the-market programme in Q4 2026, which settles how much supply reached the market.
Elapsed catalysts
- 13 November 2026: Ex-dividend and record date for the $0.28 quarterly dividend, payable 11 December 2026. A routine payment; it confirms the dividend continues alongside the unused stock-sale programme. (passed)
What would change the view
A daily close above $138.43, the 15 October 2026 close and the highest of the 20 sessions to 6 November 2026, which would show the shares leading the S&P 500; Q4 2026 core sales above the $5.3 billion top of guidance would also prove the call wrong.
What it trades with
Corning trades with optical and AI-infrastructure stocks. On 14 September 2026, 247 Wall St. reported Coherent down 11%, Lumentum down 9% and Fabrinet down 6% as Corning fell about 12%. On 11 November 2026, Applied Optoelectronics jumped after CoreWeave's Q3 results, and Corning closed up from $112.13 to $120.46 the same session. Marvell Technology confirmed an all-stock deal to acquire Lumentum on 2 November 2026, valuing it at $1,132 per share, which is consolidation among Corning's optical customers. The shares also move with long-term Treasury yields because their valuation multiple is high relative to the market.
The evidence, claim by claim (8)
- No shares were issued under the $2 billion at-the-market equity programme during the three or nine months ended 30 September 2026; no shares were repurchased either. Corning Q3 2026 Form 10-Q, Note 12 · as of
- Corning had 861,401,106 common shares outstanding on 23 October 2026. Corning Q3 2026 Form 10-Q cover page · as of
- Q3 2026 core sales were $5.08 billion (up 19%) and core EPS $0.91 (up 36%); GAAP sales $4.86 billion; Optical Communications sales $2.38 billion, up 44%. Corning Q3 2026 results release · as of
- Corning guided Q4 2026 core sales to $5.2–$5.3 billion (up about 19%) and core EPS to $0.96–$1.00 (up about 36%). Corning Q3 2026 results release · as of
- Adjusted free cash flow was $661 million in Q3 2026 and $2.27 billion for the first nine months. Corning Q3 2026 results release · as of
- Bernstein kept a Market Perform rating on Corning and cut its price target to $120 from $140. Benzinga analyst headline · as of
- Jefferies initiated coverage of Corning with a Buy rating and a $134 price target. Benzinga analyst headline · as of
- Corning opened a new optical connectivity facility in Pune and began trial production of cover glass in Chennai, India. Corning announcement via company news · as of
Sources
- SEC EDGAR
- Corning delivers outstanding third quarter results · finviz.com ·
- Corning Raises Growth Ambitions With $40 Billion Sales Target by 2030 · benzinga.com
- Corning Tumbles 12% on $2B At-the-Market Equity Offering; Coherent Sinks 11%, Lumentum Drops 9%, Fabrinet Slides 6% · 247wallst.com ·
- GLW Stock Drops Premarket As Corning Launches $2B Equity Offering · stocktwits.com
- Corning upgraded to Outperform from Equal Weight at Fox Advisors · tipranks.com
Related · shared themes
ANET
Arista Networks
Arista Networks' guide for about $18.5 billion of 2027 revenue, near 40% growth, gives its shares a modest edge over the S&P 500 after a…
ALAB
Astera Labs
Astera Labs shares are modestly more likely than not to beat the S&P 500: third-quarter revenue of $584.9 million beat guidance and the…
COHR
Coherent
Coherent's raised guidance, a roughly $20 billion PhotonLink laser agreement and open-market buying by its CEO support shares still 46.7%…
FN
Fabrinet
Fabrinet, which assembles optical parts for AI data centers, is modestly more likely than not to beat the S&P 500 over three months…