The Greedy Trader Weekly Analysis
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- 8/22/2025 -
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Costco Co. (COST) Technical Analysis

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Summary:
Weekly :Oversold sector
Daily :Stochastic signal line moved below overbought areaThe price has declined below the moving average in the center of the Bollinger Bands
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It was the negative week for the Costco Co. (COST). During the week, the COST dropped -13.50 points, or -1.39%, and closed at 958.54 on Friday, August 22, 2025. Weekly volume was 10% above average.

COST is a member of Consumer Staples Sector. Consumer Staples is the most oversold 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 COST long-term trend chart]
A long-term uptrend had started on May 20, 2022 at 406.51 and reached 1078.00 on February 13, 2025. COST gained -671.49 points, or -165.18%, in 142 weeks. The price is now at the 17.79% retracement level.

Medium-term trend: [See COST medium-term trend chart]
A medium-term downtrend had started on June 3, 2025 at 1067.08 and reached 925.00 on July 31, 2025. COST lost 142.08 points, or 13.31%, in 8 weeks. The chart has formed a Broadening Descending Wedge chart pattern. The trend support level is at 890.46 and resistance is at 997.28. A Broadening Descending Wedge pattern is considered to be a reversal formation. It usually appears in a mature trend, characterized by overbought/oversold long-term and short-term indicators, and often generates divergence on long-term indicators. Use the following link to access a Broadening Descending Wedge chart pattern help, or use a Technical Stock Screener to see the list of stocks with Broadening Descending Wedge pattern in a medium-term trend.

Weekly Technical Indicators: [See COST weekly technical indicators chart]
Weekly technical indicators are neutral.

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 August 20, 2025 at 999.30 and reached 953.11 on August 22, 2025. COST lost 46.19 points, or 4.62%, in 2 days. The price is now at the 11.76% retracement level.

Daily Technical Indicators: [See COST daily technical indicators chart]
Daily technical indicators are neutral. During the last week, daily Lane's Stochastic signal line (%D) has moved below overbought area. Such crossover is considered a bearish signal. 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 Lane's Stochastic help.

The daily MACD line is above its signal line since July 31, 2025. The distance between MACD and the signal line is low and getting smaller.

During the last week, the price has declined below the moving average in the center of the Bollinger Bands. The Bollinger Bands are often used with a non-oscillator indicator like chart patterns or a trendline. The signals are considered more reliable if these indicators confirm the recommendation of the Bollinger Bands. Use the following links to access the Bollinger Bands Help, or use the Technical Stock Screener to see the list of stocks with the price above the Upper Bollinger Band or below the Lower Bollinger Band.

Daily Oscillators
Description Value Status Divergence Chart
Relative Strength Index (RSI) 51.16
Williams' Percentage Range (W%R) 37.40
Lane's Stochastic (%D-Slow) 47.00
Greed/Fear Indicator (GFI) 53.60
Moving Average Converg./Diverg. (MACD) 2.28
Weekly Oscillators
Description Value Status Divergence Chart
Relative Strength Index (RSI) 35.69
Williams' Percentage Range (W%R) 48.90
Lane's Stochastic (%D-Slow) 33.53
Greed/Fear Indicator (GFI) 43.03
Moving Average Converg./Diverg. (MACD) 8.77
Trading Signals
Description Value Chart
Upper Bollinger Band 1010.32
Parabolic System 998.41
Monthly Trendline Resistance 997.28
Daily Stochastic Crossing 971.62
50 Day Moving Average 970.50
20 Day Moving Average 965.17
Price 958.54
Weekly Stochastic Crossing 955.89
Lower Bollinger Band 930.01
Monthly Trendline Support 890.46
Sector and Industry
Description Name Rank
Sector Consumer Staples 1
Industry Hypermarkets & Super Centers 40
Daily Trend
Description Value
Direction Down
Chart Pattern DownTrend
High 999.30
High Date 08/20/2025
Low 953.11
Low Date 08/22/2025
Weekly Trend
Monthly Trend
Description Value
Direction Up
Chart Pattern Uptrend
Status
Resistance
Support
Low 925.00
Low Date 07/31/2025
High 999.30
High Date 08/20/2025
Description Value
Direction Down
Chart Pattern Broadening Descending Wedge
Status Valid
Resistance 997.28
Support 890.46
High 1067.08
High Date 06/03/2025
Low 925.00
Low Date 07/31/2025
Quarterly Trend
Yearly Trend
Description Value
Direction Up
Chart Pattern Uptrend
Status
Resistance
Support
Low 406.51
Low Date 05/20/2022
High 1078.00
High Date 02/13/2025
Description Value
Direction Up
Chart Pattern Uptrend
Status
Resistance
Support
Low 25.94
Low Date 05/24/2000
High 1078.00
High Date 02/13/2025
Warning: TheGreedyTrader.com presents weekly analysis. Technical indicators and trend parameters are calculated for the close of business day indicated on the top right corner of the screen.