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Downtrend Broken Resist.Archive
- 9/11/2026 -
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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 -10.97 points, or -1.20%, and closed at 904.77 on Friday, September 11, 2026. Weekly volume was -13% below average.
 Long-term trend: [See COST long-term trend chart]
A long-term uptrend had started on May 24, 2000 at 25.94 and reached 1096.50 on May 19, 2026. COST gained -1070.56 points, or -4127.06%, in 1355 weeks. The price is now at the 17.91% retracement level.
 Medium-term trend: [See COST medium-term trend chart]
A medium-term downtrend had started on May 19, 2026 at 1096.50 and reached 898.43 on September 9, 2026. COST lost 198.07 points, or 18.06%, in 16 weeks. Price is near the trend low.
 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 May 29, 2026. 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 August 24, 2026 at 974.49 and reached 898.43 on September 9, 2026. COST lost 76.06 points, or 7.81%, in 16 days. The price is now at the 8.34% retracement level.
 Daily Technical Indicators: [See COST daily technical indicators chart]
Daily Williams' Percentage Range and Lane's Stochastic are strongly oversold. Use the Technical Stock Screener to see the list of stocks with daily strongly oversold Williams' Percentage Range and Lane's Stochastic. During the last week, daily Lane's Stochastic main line (%K) has rallied above the oversold signal line (%D). 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 August 26, 2026. This is an indication that the short-term trend is down.
During the last week, the 20 Day Moving Average has crossed below the 50 Day Moving Average. Such crossover is considered a bearish signal. The moving average crossover signals work better when the stock develops a strong trend, but they are ineffective when the stock is in a trading range. Moving average crossover systems can be effective, but should be used in conjunction with trend patterns, momentum indicators, candlesticks and other aspects of technical analysis. Use the following links to access Moving Average Crossover trading technique, or use the Technical Stock Screener to see the list of stocks with the Moving Average close to the price level.
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