GLW
StockCorning Incorporated
One email when a drop — in price or in valuation — is historically rare for GLW. Otherwise we stay quiet.
Rare — pay attention.
Corning Incorporated is 41.4% off its high, 41 days in — deeper than the vast majority of its 129 recorded drawdowns. This is the kind of decline the severity score exists to flag.
But down is not the same as cheap: Corning Incorporated's P/S Severity Score is 0.0 — its valuation sits in or above its typical range.
Very Strong
Current Drawdown
-41.4%
Days in Drawdown
41
Avg Max Drawdown
6.8%
Avg Length
113
Drawdown Severity Score™
7.4
GLW - Price & High Water Mark
GLW - Drawdown Timeline
How to read this chart: Negative values indicate drawdowns from all-time highs. Values closer to 0% mean the stock is near its high water mark.
Valuation vs Its Own History
Data as of August 22, 2026 · updated daily
Where today's valuation sits within GLW's own multi-year range, scored with the same Drawdown Severity Score language as price, measured from its typical level rather than its record high — a higher score means it has rarely been cheaper. This is context, not a recommendation.
Price to Sales
Corning Incorporated has been cheaper on this measure only about 97% of the time in 20 years of daily history.
Price to Sales history
EV to EBITDA
Corning Incorporated has been cheaper on this measure only about 98% of the time in 20 years of daily history.
EV to EBITDA history · log scale
Corning Incorporated (GLW) Analysis: Current Drawdown Insights
Corning Incorporated is currently in a drawdown that is unusual by its own historical standards. As of 2026-08-21, the stock is trading at $149.81, which represents a 41.4% decline from its all-time high of $255.79. This drawdown has persisted for 41 days.
Based on its full tracked price history, Corning Incorporated typically experiences drawdowns averaging 6.8% in depth, with an average duration of 113 days. Corning Incorporated has gone through 129 total drawdown events in its tracked history. The largest drawdown on record for Corning Incorporated was 99.0%, beginning in 2000. The longest drawdown duration on record was 9137 days.
The Drawdown Severity Score™ for Corning Incorporated currently stands at 7.40. This is our proprietary indicator that shows the relative severity of the current drawdown based on the asset's unique historical patterns. A score between 5.0 and 8.0 indicates a rare, significant drawdown: the asset seldom sees declines at this level in its tracked history.
Understanding Drawdowns: A drawdown measures how far a stock has fallen from its peak price. Every stock experiences drawdowns: periods when the price declines from all-time highs before recovering. By analyzing Corning Incorporated's historical drawdown patterns, investors can identify when the stock is experiencing a typical market fluctuation versus an unusual decline that is rare by that stock's own historical standards.
📜 Historical Drawdown Events
Current drawdown shown in blue. Showing the most recent and the deepest of 129 tracked pullbacks (59 listed).
| Start Date | End Date | Duration | Max Depth | Start Price | Lowest Price | Recovery Price |
|---|---|---|---|---|---|---|
| 2026-07-11 | Ongoing | 41 days | -41.4% | $255.79 | $149.81 | n/a |
| 2026-06-26 | 2026-06-29 | 4 days | -2.3% | $228.13 | $223.00 | $255.79 |
| 2026-06-23 | 2026-06-25 | 3 days | -7.5% | $209.85 | $194.01 | $228.13 |
| 2026-05-15 | 2026-06-22 | 39 days | -19.3% | $208.28 | $168.17 | $209.85 |
| 2026-05-12 | 2026-05-14 | 3 days | -4.4% | $207.38 | $198.24 | $208.28 |
| 2026-04-27 | 2026-05-06 | 10 days | -13.7% | $175.89 | $151.86 | $181.57 |
| 2026-04-14 | 2026-04-24 | 11 days | -6.2% | $175.17 | $164.38 | $175.89 |
| 2026-02-26 | 2026-04-08 | 41 days | -23.2% | $160.43 | $123.29 | $165.10 |
| 2026-02-17 | 2026-02-20 | 4 days | -2.6% | $133.46 | $129.99 | $139.51 |
| 2026-02-12 | 2026-02-13 | 1 day | -1.1% | $132.90 | $131.50 | $133.46 |
| 2026-02-10 | 2026-02-11 | 1 day | -2.5% | $131.39 | $128.10 | $132.90 |
| 2026-02-04 | 2026-02-05 | 2 days | -2.7% | $112.79 | $109.69 | $112.79 |
| 2026-01-28 | 2026-02-02 | 6 days | -6.1% | $109.72 | $103.00 | $110.36 |
| 2025-12-12 | 2026-01-27 | 46 days | -11.2% | $95.97 | $85.23 | $109.72 |
| 2025-10-30 | 2025-12-09 | 41 days | -13.3% | $89.98 | $78.03 | $91.11 |
| 2025-10-28 | 2025-10-29 | 2 days | -3.3% | $89.07 | $86.14 | $89.98 |
| 2025-10-10 | 2025-10-24 | 15 days | -4.8% | $86.89 | $82.70 | $87.11 |
| 2025-10-07 | 2025-10-08 | 2 days | -0.3% | $85.05 | $84.77 | $86.77 |
| 2025-10-02 | 2025-10-03 | 2 days | -0.7% | $82.84 | $82.24 | $83.28 |
| 2025-09-24 | 2025-09-30 | 7 days | -2.3% | $80.72 | $78.86 | $81.75 |
| 2025-09-19 | 2025-09-23 | 5 days | -0.6% | $79.35 | $78.89 | $80.72 |
| 2025-09-17 | 2025-09-18 | 2 days | -2.3% | $78.43 | $76.62 | $79.35 |
| 2000-09-05 | 2025-09-10 | 9137 days | -99.0% | $74.15 | $0.72 | $74.68 |
| 2000-08-31 | 2000-09-01 | 2 days | -0.6% | $71.93 | $71.53 | $74.15 |
| 2000-08-29 | 2000-08-30 | 2 days | -0.6% | $67.90 | $67.49 | $71.93 |
| 2000-08-23 | 2000-08-25 | 3 days | -1.4% | $65.50 | $64.57 | $65.72 |
| 2000-08-21 | 2000-08-22 | 2 days | -0.1% | $65.38 | $65.34 | $65.50 |
| 2000-08-09 | 2000-08-16 | 8 days | -4.8% | $62.45 | $59.42 | $63.21 |
| 2000-07-24 | 2000-08-08 | 16 days | -17.8% | $61.74 | $50.73 | $62.45 |
| 2000-07-18 | 2000-07-20 | 3 days | -2.2% | $60.00 | $58.70 | $60.08 |
| 2000-07-05 | 2000-07-17 | 13 days | -9.3% | $59.61 | $54.06 | $60.00 |
| 2000-06-29 | 2000-07-03 | 5 days | -0.3% | $57.70 | $57.54 | $59.61 |
| 2000-06-27 | 2000-06-28 | 2 days | -2.7% | $56.71 | $55.20 | $57.70 |
| 2000-06-20 | 2000-06-26 | 7 days | -5.2% | $55.20 | $52.31 | $56.71 |
| 2000-06-16 | 2000-06-19 | 4 days | -1.5% | $54.44 | $53.62 | $55.20 |
| 2000-06-14 | 2000-06-15 | 2 days | -4.8% | $54.27 | $51.66 | $54.44 |
| 2000-03-24 | 2000-06-12 | 80 days | -34.5% | $47.89 | $31.36 | $50.79 |
| 2000-03-07 | 2000-03-23 | 17 days | -18.8% | $45.65 | $37.07 | $47.89 |
| 2000-03-03 | 2000-03-06 | 4 days | -0.3% | $44.83 | $44.70 | $45.65 |
| 2000-02-22 | 2000-03-01 | 9 days | -7.0% | $42.06 | $39.11 | $44.17 |
| 2000-02-15 | 2000-02-17 | 3 days | -2.4% | $39.16 | $38.24 | $41.57 |
| 2000-02-11 | 2000-02-14 | 4 days | -3.4% | $37.31 | $36.06 | $39.16 |
| 2000-02-09 | 2000-02-10 | 2 days | -2.8% | $36.95 | $35.90 | $37.31 |
| 2000-01-28 | 2000-02-04 | 8 days | -9.3% | $35.25 | $31.98 | $35.87 |
| 2000-01-24 | 2000-01-27 | 4 days | -6.6% | $35.25 | $32.91 | $35.25 |
| 2000-01-03 | 2000-01-19 | 17 days | -19.5% | $28.05 | $22.57 | $29.09 |
| 1999-12-30 | 1999-12-31 | 2 days | -1.8% | $27.01 | $26.53 | $28.05 |
| 1999-12-27 | 1999-12-29 | 3 days | -2.5% | $26.78 | $26.11 | $27.01 |
| 1999-12-14 | 1999-12-23 | 10 days | -11.4% | $25.91 | $22.95 | $26.78 |
| 1999-11-24 | 1999-12-03 | 10 days | -5.7% | $21.62 | $20.38 | $22.68 |
| 1999-11-15 | 1999-11-16 | 2 days | -4.0% | $19.63 | $18.84 | $19.98 |
| 1999-07-22 | 1999-10-29 | 100 days | -18.2% | $16.24 | $13.29 | $17.08 |
| 1999-04-15 | 1999-06-30 | 77 days | -27.1% | $14.22 | $10.36 | $15.19 |
| 1997-08-07 | 1999-04-14 | 616 days | -63.0% | $13.60 | $5.04 | $14.22 |
| 1997-01-02 | 1997-02-18 | 48 days | -12.5% | $8.06 | $7.06 | $8.07 |
| 1996-05-20 | 1996-10-08 | 142 days | -10.0% | $6.81 | $6.13 | $6.96 |
| 1991-12-24 | 1996-05-16 | 1605 days | -40.6% | $6.70 | $3.98 | $6.73 |
| 1990-05-23 | 1991-01-30 | 253 days | -29.7% | $3.90 | $2.74 | $4.02 |
| 1989-08-29 | 1989-12-14 | 108 days | -14.6% | $3.22 | $2.75 | $3.23 |
| 1986-04-11 | 1989-05-25 | 1140 days | -46.5% | $2.79 | $1.49 | $2.79 |
How to read: Each row shows a complete drawdown from peak to recovery. Red rows = most severe drawdowns (worst 20% or 5x+ average), yellow rows = moderate (2x-5x worse than average).
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Or explore current drawdowns:
Corning Incorporated (GLW) is trading at $149.81 as of Aug 21, 2026. It is 41.4% below its high of $255.79. The drawdown has lasted 41 days. Severity score: 7.4 (Very Strong).
GLW Price History and Drawdown Data
Latest price
$149.81
High-water mark
$255.79
Current drawdown
-41.4%
Days in drawdown
41
This GLW page is built around daily price history, the latest high-water mark, current drawdown depth, drawdown duration, and comparable historical drawdown events. The chart above provides the price-history context, while the sections below explain how the current move compares with prior Corning Incorporated drawdowns.
What History Says About GLW
Corning Incorporated has dropped 20%+ from its high 8 times in its tracked history. These events lasted an average of 1619 days with an average max drop of -45.4%.
The current drawdown of -41.4% has lasted 41 days, which is within the typical range for comparable events.
| Period | Max Drop | Duration |
|---|---|---|
| Sep 2000 to Sep 2025 | -99.0% | 9137 days |
| Aug 1997 to Apr 1999 | -63.0% | 616 days |
| Apr 1986 to May 1989 | -46.5% | 1140 days |
| Dec 1991 to May 1996 | -40.6% | 1605 days |
| Mar 2000 to Jun 2000 | -34.5% | 80 days |
| May 1990 to Jan 1991 | -29.7% | 253 days |
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