GLW technical analysis
GLW Technical Analysis
Analysis date
August 4, 2026
Market
NYSE (USD)
Daily cutoff
August 3, 2026
Reliability
Passed
Informational use only. This page is not investment advice.
Data verification
GLW Data Verification
Checking the latest completed daily bar for date and closing-price consistency before indicators are calculated.
- Symbol
- GLW
- Market
- NYSE
- Currency
- USD (US Dollar)
- Latest completed bar
- August 3, 2026
Historical prices are adjusted for corporate actions when applicable. Date and closing-price consistency checks passed for the latest completed daily bar.
| Validation series | Latest Close | Date | Difference | Status |
|---|---|---|---|---|
| Calculation series | 146.64 | August 3, 2026 | - | Verified |
| Verification series | 146.64 | August 3, 2026 | 0.00% | Verified |
Bottom line
GLW Technical Analysis Summary
GLW has corrected sharply after a strong rally. The stock peaked at 271.78 on June 30 and sold off to a low of 114.50 on July 28 before recovering to 146.64 as of the August 3 data cutoff, with the last completed session up 6.07%. The daily chart is mixed, with price at 146.64 below SMA20 (159.83) and SMA50 (181.77) but above SMA200 (135.29), and RSI14 at 42.47 below the 50 midline. The weekly chart shows price at 138.25 below SMA20 (171.52) but still above SMA50 (124.66) and SMA200 (58.91), keeping the long-term uptrend intact while the medium-term picture remains under pressure. The stock sits at 40.7% of its 52-week range. Key support is at 135.29 (daily SMA200) and 114.50 (20- and 60-period low on both timeframes). Key resistance is at 159.83 (daily SMA20), 181.77 (daily SMA50), and 204.48 (daily 20-period high). A sustained close above SMA20 would signal the correction is stabilizing; a break below 114.50 would open the door to further downside.
Multi-timeframe dashboard
Multi-Timeframe Technical Dashboard
Comparing daily (2-year) and weekly (5-year) perspectives to identify aligned or conflicting signals.
Daily (August 3, 2026)
- Trend
- Mixed. Price at 146.64 trades below SMA20 (159.83) and SMA50 (181.77) but above SMA200 (135.29). The stock corrected sharply from the June 30 high of 271.78, printing a low of 114.50 on July 28 before bouncing. The short-term moving averages are in a bearish alignment, while the upward-sloping SMA200 keeps the longer-term structure constructive.
- Momentum
- Weak but improving. RSI14 at 42.47 is below the 50 midline, indicating lingering bearish momentum after the recent decline. MACD at -14.99 is below the signal line at -13.29 with a negative histogram of -1.70. The last completed session rose 6.07%, an early attempt to stabilize, though the MACD has not yet turned positive.
- Volatility
- High. ATR14 at 14.75 (10.06% of price) reflects elevated daily swings, consistent with the sharp correction. Bollinger Bands (117.33 to 202.34) are wide, with price in the lower half of the range after the selloff.
- Volume
- Below average. Latest volume of 12,561,000 is 91.4% of the 20-period average (13,744,215), indicating the recent bounce occurred on modest participation.
Assessment
The daily chart shows a stock in a steep correction after peaking at 271.78 on June 30. Price fell to a low of 114.50 on July 28 on heavy volume, then staged a partial recovery, closing at 146.64 on August 3 after a 6.07% gain. Price remains below SMA20 and SMA50, and the RSI is below 50, so the short-term trend is still down. The 20-period return of -24.72% captures the recent selloff. A move back above SMA20 at 159.83 would mark the first sign of trend repair, while the SMA200 at 135.29 and the 114.50 low define the key support zone below.
Weekly (July 27, 2026 week)
- Trend
- Mixed. Price at 138.25 is below SMA20 (171.52) but above SMA50 (124.66) and SMA200 (58.91). The medium-term uptrend has been damaged by the sharp multi-week decline, with the 5-period return of -37.46% showing the severity of the pullback. The upward-sloping SMA200 remains well below price, keeping the long-term structure intact.
- Momentum
- Bearish. RSI14 at 44.30 is below the 50 midline. MACD at 11.59 is below the signal line at 19.62 with a negative histogram of -8.03, showing downside momentum that has expanded over recent weeks.
- Volatility
- High. ATR14 at 28.14 (20.35% of price) reflects very wide weekly ranges, consistent with the violent selloff from the June high. Bollinger Bands (123.36 to 219.69) are wide, with price near the lower band.
- Volume
- Above average. Latest weekly volume of 119,374,200 is 175.3% of the 20-week average (68,099,700), indicating heavy participation during the decline, a sign of distribution rather than a quiet pullback.
Assessment
The weekly chart confirms a sharp pullback within a longer-term uptrend. Price at 138.25 is below SMA20 (171.52) but still above SMA50 (124.66) and SMA200 (58.91). The last completed week fell 5.73% on well-above-average volume, and the 5-period return of -37.46% shows how quickly the stock gave back its gains. The stock remains above its major long-term averages, so the trend is corrective rather than broken, but it would need to reclaim the weekly SMA20 to start repairing the medium-term picture.
Key indicators
GLW Key Technical Indicators
RSI, MACD, moving averages, ATR, and Bollinger Bands across daily and weekly timeframes.
| Indicator | Daily | Weekly |
|---|---|---|
| RSI (14) | 42.47 | 44.30 |
| MACD (12, 26, 9) | -14.99 / -13.29 / -1.70 | 11.59 / 19.62 / -8.03 |
| ATR (14) | 14.75 (10.06%) | 28.14 (20.35%) |
| Bollinger Bands (20, 2) | 117.33 - 202.34 | 123.36 - 219.69 |
| SMA (20) | 159.83 | 171.52 |
| SMA (50) | 181.77 | 124.66 |
| SMA (200) | 135.29 | 58.91 |
Price structure
GLW Price Structure and Returns
Price performance across multiple lookback periods and 52-week position.
| Metric | Daily | Weekly |
|---|---|---|
| Current Price | 146.64 | 138.25 |
| 1-Period Return | +6.07% | -5.73% |
| 5-Period Return | +2.29% | -37.46% |
| 20-Period Return | -24.72% | +7.24% |
| 60-Period Return | -19.11% | +175.61% |
| 252-Period Return | +134.41% | +322.88% |
| 52-Week Low | 60.78 | 61.97 |
| 52-Week High | 271.78 | 271.78 |
| 52-Week Position | 40.69% | 36.36% |
Key levels
GLW Support and Resistance Levels
Key price levels based on recent swing highs and lows across daily and weekly timeframes.
| Level | Daily | Weekly |
|---|---|---|
| 20-Period High | 204.48 | 271.78 |
| 20-Period Low | 114.50 | 114.50 |
| 60-Period High | 271.78 | 271.78 |
| 60-Period Low | 114.50 | 48.94 |
Scenarios
GLW Technical Scenarios
Conditions, invalidation triggers, and what to watch for each scenario.
Bullish
Trigger
Price reclaims and holds above the daily SMA20 at 159.83 with expanding volume, following the recent bounce from the 114.50 low, which would signal the correction is stabilizing.
Invalidation
Price fails to hold above SMA20 (159.83) and breaks below the 114.50 support.
What to watch
Sustained close above SMA20 (159.83); daily RSI recovering above 50; MACD histogram turning positive; volume expanding on up days; price working back toward SMA50 at 181.77.
Range-Bound
Trigger
Price oscillates between the 114.50 support and the SMA20 resistance at 159.83, with the daily 20-period high at 204.48 capping any extended move.
Invalidation
A decisive break of either 114.50 or 159.83 with above-average volume.
What to watch
RSI fluctuating between 35 and 55 on the daily chart; volatility contracting as the correction matures; volume easing back toward the 20-period average.
Bearish
Trigger
Price breaks and closes below the 20- and 60-period low at 114.50 with above-average volume, opening downside toward the 52-week low area near 60.78.
Invalidation
Price holds above 114.50 and reclaims the daily SMA20 at 159.83.
What to watch
Sustained close below 114.50; daily RSI sliding below 35; MACD histogram becoming increasingly negative; weekly price falling below the SMA50 at 124.66.
Methodology
Methodology and Limitations
This technical analysis is calculated locally from adjusted OHLCV history. The daily series ends August 3, 2026, and the weekly series ends July 27, 2026 week. The latest completed daily bar is independently checked for date and closing-price consistency. Historical prices are adjusted for corporate actions when applicable. Indicators include Wilder RSI(14), MACD(12,26,9), SMA20/50/200, Wilder ATR(14), Bollinger Bands(20,2), relative volume, multi-period returns, and price-range levels. Support and resistance are descriptive zones, not guaranteed reversal points. Historical patterns do not predict future prices, and this page is not investment advice.
Frequently Asked Questions
This technical analysis is for informational and educational purposes only. It does not constitute investment advice, a recommendation, or a solicitation to buy or sell any security. Past performance and historical patterns are not guarantees of future results. All investments carry risk, including the potential loss of principal. Always conduct your own research and consult with a qualified financial advisor before making investment decisions.
Market data is checked for date and closing-price consistency before indicators are calculated. Data cutoffs: daily August 3, 2026, weekly July 27, 2026 week. Generated August 4, 2026.
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