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Archive
- 6/18/2026 -
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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 -30.90 points, or -3.15%, and closed at 951.45 on Thursday, June 18, 2026. COST was trading at average weekly trading volume.
 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 13.55% 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 936.51 on June 1, 2026. COST lost 159.99 points, or 14.59%, in 1 weeks. The price is now at the 9.34% retracement level.
 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 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 June 16, 2026 at 995.38 and reached 948.31 on June 18, 2026. COST lost 47.07 points, or 4.73%, in 2 days. The price is now at the 6.67% retracement level.
 Daily Technical Indicators: [See COST daily technical indicators chart]
Daily technical indicators are neutral. Daily MACD has bullish divergence. Use the following links to access the MACD help, or use the Technical Stock Screener to see the list of stocks with daily MACD bullish divergence. The divergence between price and indicator is considering one of the most important buy/sell stocks trading signal.
The daily MACD line is below its signal line since June 17, 2026. This is an indication that the short-term trend is down. The distance between MACD and the signal line is low, but getting bigger. It indicates that the current short-term downtrend is getting stronger.
During the last week, the price has risen above the Parabolic SAR (stop and reversal). A Parabolic SAR below the price is a bullish signal, and it indicates that momentum is likely to remain in the upward direction. 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.
During the last week, the 20 Day Moving Average has advanced above the 50 Day Moving Average. Such crossover is considered a bullish 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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