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Downtrend Broken Resist.Archive
- 1/2/2026 -
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Costco Co. (COST) Technical Analysis
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| Summary:
| | Weekly :  | | Daily :
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| | It was the negative week for the Costco Co. (COST). During the week, the COST dropped -18.85 points, or -2.16%, and closed at 854.50 on Friday, January 2, 2026. Weekly volume was -20% below 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 (868.34) is broken. Usually a broken support is considered to be a long-term bearish signal, although a short-term pull back is possible. 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 oversold. Use the Technical Stock Screener to see the list of stocks with weekly 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 8.70% retracement level.
 Daily Technical Indicators: [See COST daily technical indicators chart]
Daily technical indicators are neutral.
The daily MACD line is above its signal line since December 24, 2025. The distance between MACD and the signal line is low, but getting bigger.
A Parabolic SAR (stop and reversal) indicator (851.83) comes close to the price (854.50). It indicates that the trend is getting weaker. A Parabolic SAR is used as a trailing stop loss for long or short positions. It works best during strong trending periods. Use the following links to access Parabolic SAR Help, or use the Technical Stock Screener to see the list of stocks with the Parabolic SAR close to the price level.
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