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S&P 500 Oversold StocksArchive
- 12/19/2025 -
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Costco Co. (COST) Technical Analysis
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| Summary:
| | Weekly : | | Daily :
Move cursor over the icon to see details.
| | It was the negative week for the Costco Co. (COST). During the week, the COST dropped -28.85 points, or -3.26%, and closed at 855.62 on Friday, December 19, 2025. It was the worst weekly loss since September 26, 2025. Weekly volume was 109% above average.
 Long-term trend: [See COST long-term trend chart]
A long-term downtrend had started on February 13, 2025 at 1078.00 and reached 844.06 on December 16, 2025. COST lost 233.94 points, or 21.70%, in 43 weeks. Price is near the trend low.
 Medium-term trend: [See COST medium-term trend chart]
A medium-term downtrend had started on June 3, 2025 at 1067.08 and reached 844.06 on December 16, 2025. COST lost 223.02 points, or 20.90%, in 28 weeks. The chart has formed a Falling Wedge chart pattern. The downtrend support line (872.58) is broken, while daily and weekly technical indicators are oversold. Downtrend 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 support in a medium-term trend.
 Weekly Technical Indicators: [See COST weekly technical indicators chart]
Weekly Williams' Percentage Range is strongly oversold. Use the Technical Stock Screener to see the list of stocks with weekly strongly oversold 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 link to access Williams' Percentage Range help.
The weekly MACD line is below its signal line since June 13, 2025. This is an indication that the medium-term trend is down. Use the following link to access a MACD help.
Short-term trend: [See COST short-term trend chart]
A short-term downtrend had started on October 15, 2025 at 964.00 and reached 844.06 on December 16, 2025. COST lost 119.94 points, or 12.44%, in 62 days. The price is now at the 9.64% retracement level.
 Daily Technical Indicators: [See COST daily technical indicators chart]
Daily Williams' Percentage Range is oversold. Use the Technical Stock Screener to see the list of stocks with daily oversold Williams' Percentage Range. During the last week, daily Lane's Stochastic signal line (%D) has moved above oversold area. Such crossover is considered a bullish signal. Use the following link to access Lane's Stochastic help.
The daily MACD line is below its signal line since December 5, 2025. This is an indication that the short-term trend is down.
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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 |
Consumer Staples |
4 |
| Industry |
Hypermarkets & Super Centers |
63 |
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| Daily Trend |
| Description |
Value |
| Direction |
Down |
| Chart Pattern |
DownTrend |
| High |
964.00 |
| High Date |
10/15/2025 |
| Low |
844.06 |
| Low Date |
12/16/2025 |
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| Weekly Trend |
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| Description |
Value |
| Direction |
Down |
| Chart Pattern |
Falling Wedge |
| Status |
Broken Support |
| Resistance |
909.55 |
| Support |
872.58 |
| High |
1067.08 |
| High Date |
06/03/2025 |
| Low |
844.06 |
| Low Date |
12/16/2025 |
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| Description |
Value |
| Direction |
Down |
| Chart Pattern |
DownTrend |
| Status |
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| Resistance |
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| Support |
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| High |
1078.00 |
| High Date |
02/13/2025 |
| Low |
844.06 |
| Low Date |
12/16/2025 |
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| Quarterly 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 |
406.51 |
| Low Date |
05/20/2022 |
| High |
1078.00 |
| High Date |
02/13/2025 |
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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 |
25.94 |
| Low Date |
05/24/2000 |
| High |
1078.00 |
| High Date |
02/13/2025 |
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