The Greedy Trader Weekly Analysis
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Weekly Pattern:Broadening Ascending Wedge
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Chart Analysis and Chart Pattern Recognition – Broadening Formations

Broadening Formations, including Broadening Ascending Wedge, present inverted triangle patterns. They start with narrow fluctuations, and then widen out between diverging boundary lines. The pattern, where one of the boundary lines is horizontal, is referred to as a right-angled formation. Broadening formations usually mark the reversal when confirmed by other technical indicators.
Broadening formations Screening page presents a list of stocks forming Broadening formation Pattern.
Tips:
# 1
As a reversal formation, Broadening formation Pattern appears in a mature trend, characterized by overbought/oversold long-term and short-term indicators. This situation usually generates divergence on long-term indicators.
# 2 For the best results, chart patterns and trend resistance support should be considered together with other technical analysis signals and technical trading techniques.

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- 6/20/2025 -
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Costco Co. (COST) Technical Analysis

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Summary:
Weekly :Stochastic signal line moved below overbought areaWeekly  MACD line has moved below its signal lineOversold sectorTrend support at 970.18Broken trend support line
Daily :Williams' Percentage Range oversoldLane's Stochastic is strongly oversoldStochastic has raised above the signal line20 Day Moving Average has crossed above the 50 Day Moving Average
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It was the negative week for the Costco Co. (COST). During the week, the COST gave back -9.92 points, or -1.00%, and closed at 980.29 on Friday, June 20, 2025. COST was trading at average weekly trading volume.

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 chart has formed a Rising Channel chart pattern. The price is near the trend support (970.18) line. The support is usually stronger when technical indicators are oversold. Use the following links to access Trend Support/Resistance Help, or use the Technical Stock Screener to see the list of stocks with price testing the trend support line in a long-term trend.

Medium-term trend: [See COST medium-term trend chart]
A medium-term uptrend had started on April 7, 2025 at 871.70 and reached 1067.08 on June 3, 2025. COST gained -195.38 points, or -22.41%, in 8 weeks. The chart has formed a Rising Wedge chart pattern. The uptrend support line (1081.93) is broken. Usually a broken support is considered to be a long-term bearish signal, but since daily indicators are oversold a short-term pull back is possible. COST may retest the broken support line. It is considered to be a resistance line now. 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. During the last week, weekly 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, weekly MACD line has moved below its signal line. Such crossover is considered a bearish signal. 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 3, 2025 at 1067.08 and reached 973.90 on June 20, 2025. COST lost 93.18 points, or 8.73%, in 17 days. The price is now at the 6.86% retracement level.

Daily Technical Indicators: [See COST daily technical indicators chart]
Daily Williams' Percentage Range is oversold while Lane's Stochastic is strongly oversold. Use the Technical Stock Screener to see the list of stocks with oversold daily Williams' Percentage Range or strongly oversold daily 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 Williams' Percentage Range help.

The daily MACD line is below its signal line since June 4, 2025. This is an indication that the short-term trend is down.

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.

Daily Oscillators
Description Value Status Divergence Chart
Relative Strength Index (RSI) 26.29
Williams' Percentage Range (W%R) 89.20
Oversold
Lane's Stochastic (%D-Slow) 5.16
Strong Oversold
Greed/Fear Indicator (GFI) 14.09
Oversold
Moving Average Converg./Diverg. (MACD) -0.60
Weekly Oscillators
Description Value Status Divergence Chart
Relative Strength Index (RSI) 63.07
Williams' Percentage Range (W%R) 45.60
Lane's Stochastic (%D-Slow) 73.52
Greed/Fear Indicator (GFI) 60.66
Moving Average Converg./Diverg. (MACD) 23.29
Trading Signals
Description Value Chart
Quarterly Trendline Resistance 1149.56
Monthly Trendline Resistance 1104.15
Monthly Trendline Support 1081.93
Upper Bollinger Band 1050.01
Weekly Stochastic Crossing 1032.93
20 Day Moving Average 1010.84
Parabolic System 1010.55
50 Day Moving Average 1001.07
Price 980.29
Daily Stochastic Crossing 976.14
Quarterly Trendline Support 970.18
Lower Bollinger Band 953.97
Sector and Industry
Description Name Rank
Sector Consumer Staples 1
Industry Hypermarkets & Super Centers 75
Daily Trend
Description Value
Direction Down
Chart Pattern DownTrend
High 1067.08
High Date 06/03/2025
Low 973.90
Low Date 06/20/2025
Weekly Trend
Monthly Trend
Description Value
Direction Down
Chart Pattern DownTrend
Status
Resistance
Support
High 1067.08
High Date 06/03/2025
Low 973.90
Low Date 06/20/2025
Description Value
Direction Up
Chart Pattern Rising Wedge
Status Broken Support
Resistance 1104.15
Support 1081.93
Low 871.70
Low Date 04/07/2025
High 1067.08
High Date 06/03/2025
Quarterly Trend
Yearly Trend
Description Value
Direction Up
Chart Pattern Rising Channel
Status Test Support
Resistance 1149.56
Support 970.18
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.