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- 4/17/2026 -
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Costco Co. (COST) Technical Analysis

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Summary:
Weekly :Broken trend support lineOversold sector
Daily :Stochastic signal line moved below overbought areaDaily  MACD line has moved below its signal line20 Day Moving Average has crossed below the 50 Day Moving AverageThe price moved above the moving average in the center of the Bollinger Bands
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It was a first positive week for the Costco Co. (COST). During the week, the COST climbed 1.42 points, or 0.14%, and closed at 999.89 on Friday, April 17, 2026. Weekly volume was -7% below 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 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. The chart has formed a Falling Channel chart pattern. The trend support level is at 830.87 and resistance is at 1031.95. A Falling Channel represents price movement contained between parallel lower (support) and upper (resistance) trend lines. Trading Channeling stocks is one of the most reliable and accurate trading techniques that provide traders with precise entry and exit points as well as stop-losses and take-profit recommendations. Use the following link to access a Falling Channel chart pattern help, or use a Technical Stock Screener to see the list of stocks with Falling Channel pattern in a long-term trend.

Medium-term trend: [See COST medium-term trend chart]
A medium-term uptrend had started on December 16, 2025 at 844.06 and reached 1035.82 on April 9, 2026. COST gained -191.76 points, or -22.72%, in 16 weeks. The chart has formed a Rising Wedge chart pattern. The uptrend support line (1022.97) is broken. A broken support is considered to be a long-term bearish signal. 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 technical indicators are neutral.

The weekly MACD line is above its signal line since January 9, 2026. This is an indication that the medium-term trend is up. 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 April 9, 2026 at 1035.82 and reached 966.00 on April 14, 2026. COST lost 69.82 points, or 6.74%, in 5 days. The price is now at the 48.54% 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.

During the last week, daily MACD line has moved below its signal line. Such crossover is considered a bearish signal.

During the last week, the price has moved above 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.

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.

Daily Oscillators
Description Value Status Divergence Chart
Relative Strength Index (RSI) 55.67
Williams' Percentage Range (W%R) 67.90
Lane's Stochastic (%D-Slow) 24.20
Greed/Fear Indicator (GFI) 37.32
Moving Average Converg./Diverg. (MACD) 3.04
Weekly Oscillators
Description Value Status Divergence Chart
Relative Strength Index (RSI) 60.48
Williams' Percentage Range (W%R) 26.50
Lane's Stochastic (%D-Slow) 59.08
Greed/Fear Indicator (GFI) 61.36
Moving Average Converg./Diverg. (MACD) 11.54
Trading Signals
Description Value Chart
Monthly Trendline Resistance 1037.05
Upper Bollinger Band 1033.55
Quarterly Trendline Resistance 1031.95
Monthly Trendline Support 1022.97
Parabolic System 1020.38
Weekly Stochastic Crossing 1003.71
Price 999.89
50 Day Moving Average 994.89
20 Day Moving Average 993.74
Daily Stochastic Crossing 986.66
Lower Bollinger Band 957.29
Quarterly Trendline Support 830.87
Sector and Industry
Description Name Rank
Sector Consumer Staples 1
Industry Hypermarkets & Super Centers 92
Daily Trend
Description Value
Direction Up
Chart Pattern Uptrend
Low 966.00
Low Date 04/14/2026
High 1000.67
High Date 04/17/2026
Weekly Trend
Monthly Trend
Description Value
Direction Down
Chart Pattern DownTrend
Status
Resistance
Support
High 1035.82
High Date 04/09/2026
Low 966.00
Low Date 04/14/2026
Description Value
Direction Up
Chart Pattern Rising Wedge
Status Broken Support
Resistance 1037.05
Support 1022.97
Low 844.06
Low Date 12/16/2025
High 1035.82
High Date 04/09/2026
Quarterly Trend
Yearly Trend
Description Value
Direction Down
Chart Pattern Falling Channel
Status Valid
Resistance 1031.95
Support 830.87
High 1078.00
High Date 02/13/2025
Low 844.06
Low Date 12/16/2025
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.