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S&P 500 Overbought StocksArchive
- 8/14/2026 -
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Quest Diagnostics (DGX) Technical Analysis
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| Summary:
| | Weekly : | | Daily :
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| | It was the negative week for the Quest Diagnostics (DGX). During the week, the DGX dropped -3.95 points, or -1.66%, and closed at 234.40 on Friday, August 14, 2026. Weekly volume was -28% below average.
DGX is a member of Health Care Sector. Health Care is the most overbought sector. Sector/industry rotation is considered a proven strategy to beat the market. Use the following links to find overbought/oversold technical indicators by Sector or by Industry.
 Long-term trend: [See DGX long-term trend chart]
A long-term uptrend had started on October 17, 2008 at 38.66 and reached 240.13 on July 28, 2026. DGX gained -201.47 points, or -521.13%, in 927 weeks. The chart has formed a Broadening Ascending Wedge chart pattern. The uptrend resistance line (91.19) is broken, while daily and weekly technical indicators are overbought. Uptrend is exhausted and trend reversal is possible soon. Use the following links to access Trend Support/Resistance Help, or use the Technical Stock Screener to see the list of stocks with broken trend resistance line in a long-term trend.
Medium-term trend: [See DGX medium-term trend chart]
A medium-term uptrend had started on October 2, 2023 at 119.59 and reached 240.13 on July 28, 2026. DGX gained -120.54 points, or -100.79%, in 147 weeks. The chart has formed a Broadening Ascending Wedge chart pattern. The uptrend resistance line (185.22) is broken, while daily and weekly technical indicators are overbought. Uptrend is exhausted and trend reversal is possible soon. Use the following links to access Trend Support/Resistance Help, or use the Technical Stock Screener to see the list of stocks with broken trend resistance line in a medium-term trend.
 Weekly Technical Indicators: [See DGX weekly technical indicators chart]
Weekly Lane's Stochastic is overbought while Williams' Percentage Range is strongly overbought. Use the Technical Stock Screener to see the list of stocks with overbought weekly Lane's Stochastic or strongly overbought weekly Williams' Percentage Range. Oscillators are designed to signal a possible trend reversal. They can act as alerts and should be taken in conjunction with other technical analysis tools. Oscillators can be used to confirm other technical signals. Use the following links to access Lane's Stochastic and Williams' Percentage Range help.
The weekly MACD line is above its signal line since June 18, 2026. This is an indication that the medium-term trend is up. The distance between MACD and the signal line is near its high and getting bigger. It indicates that the current medium-term uptrend is strong. Use the following link to access a MACD help.
 Short-term trend: [See DGX short-term trend chart]
A short-term downtrend had started on August 11, 2026 at 239.92 and reached 232.28 on August 12, 2026. DGX lost 7.64 points, or 3.18%, in 1 days. The price is now at the 27.75% retracement level.
 Daily Technical Indicators: [See DGX daily technical indicators chart]
Daily Williams' Percentage Range is overbought. Use the Technical Stock Screener to see the list of stocks with overbought daily Williams' Percentage Range.
During the last week, daily MACD line has moved below its signal line. Such crossover is considered a bearish signal.
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| Daily Oscillators |
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| Weekly Oscillators |
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| Trading
Signals |
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| Sector and
Industry |
| Description |
Name |
Rank |
| Sector |
Health Care |
11 |
| Industry |
Health Care Services |
106 |
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| Daily Trend |
| Description |
Value |
| Direction |
Down |
| Chart Pattern |
DownTrend |
| High |
239.92 |
| High Date |
08/11/2026 |
| Low |
232.28 |
| Low Date |
08/12/2026 |
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| Weekly Trend |
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| Description |
Value |
| Direction |
Up |
| Chart Pattern |
Uptrend |
| Status |
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| Resistance |
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| Support |
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| Low |
201.00 |
| Low Date |
07/16/2026 |
| High |
240.13 |
| High Date |
07/28/2026 |
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| Description |
Value |
| Direction |
Up |
| Chart Pattern |
Broadening Ascending Wedge |
| Status |
Valid |
| Resistance |
239.67 |
| Support |
206.63 |
| Low |
186.23 |
| Low Date |
05/08/2026 |
| High |
240.13 |
| High Date |
07/28/2026 |
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| Quarterly Trend |
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| Description |
Value |
| Direction |
Up |
| Chart Pattern |
Broadening Ascending Wedge |
| Status |
Broken Resistance |
| Resistance |
225.91 |
| Support |
185.22 |
| Low |
119.59 |
| Low Date |
10/02/2023 |
| High |
240.13 |
| High Date |
07/28/2026 |
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| Description |
Value |
| Direction |
Up |
| Chart Pattern |
Broadening Ascending Wedge |
| Status |
Broken Resistance |
| Resistance |
153.79 |
| Support |
91.19 |
| Low |
38.66 |
| Low Date |
10/17/2008 |
| High |
240.13 |
| High Date |
07/28/2026 |
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