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- 12/19/2025 -
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American Tower Corp. (AMT) Technical Analysis

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Summary:
Weekly :Oversold sectorOversold industryWilliams' Percentage Range is oversoldBroken trend support line
Daily :Daily  MACD line has moved below its signal lineThe price has fallen below the Parabolic SARThe price is below the lower Bollinger BandWilliams' Percentage Range is oversold
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It was the negative week for the American Tower Corp. (AMT). During the week, the AMT dropped -8.29 points, or -4.59%, and closed at 172.41 on Friday, December 19, 2025. It was the worst weekly loss since October 31, 2025. Weekly volume was 63% above average.

AMT is a member of Real Estate Sector. Real Estate is the second most oversold sector. AMT is a member of Specialized REITs Industry. Specialized REITs is the tenth most oversold industry. 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 AMT long-term trend chart]
A long-term uptrend had started on October 6, 2023 at 154.58 and reached 243.56 on September 10, 2024. AMT gained -88.98 points, or -57.56%, in 48 weeks. The chart has formed a Symmetric Triangle chart pattern. The uptrend support line (185.94) 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. AMT 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 long-term trend.

Medium-term trend: [See AMT medium-term trend chart]
A medium-term downtrend had started on July 24, 2025 at 234.33 and reached 171.95 on December 19, 2025. AMT lost 62.38 points, or 26.62%, in 21 weeks. The chart has formed a Falling Wedge chart pattern. The trend support level is at 170.65 and resistance is at 177.76. A Falling Wedge is a triangle formation with a noticeable slant to the downside. It represents the loss of a downside momentum on each successive low and has a bullish bias. The Falling wedge usually marks a reversal in a downtrend. In an uptrend a falling wedge is considered to be a continuation pattern. Use the following link to access a Falling Wedge chart pattern help, or use a Technical Stock Screener to see the list of stocks with Falling Wedge pattern in a medium-term trend.

Weekly Technical Indicators: [See AMT 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 August 1, 2025. This is an indication that the medium-term trend is down. The distance between MACD and the signal line is low and getting smaller. It indicates that the current medium-term downtrend is getting weak. Use the following link to access a MACD help.

Short-term trend: [See AMT short-term trend chart]
A short-term downtrend had started on December 9, 2025 at 184.61 and reached 171.95 on December 19, 2025. AMT lost 12.66 points, or 6.86%, in 10 days. Price is near the trend low.

Daily Technical Indicators: [See AMT daily technical indicators chart]
Daily Williams' Percentage Range is oversold. Use the Technical Stock Screener to see the list of stocks with daily oversold Williams' Percentage Range.

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 fallen below the Parabolic SAR (stop and reversal). A Parabolic SAR above the price is a bearish signal, and it indicates that momentum is likely to remain in the downward 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.

The price has closed on Friday below the lower Bollinger Band. It is considered a bearish signal. 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) 41.59
Williams' Percentage Range (W%R) 82.10
Oversold
Lane's Stochastic (%D-Slow) 24.66
Greed/Fear Indicator (GFI) 28.04
Moving Average Converg./Diverg. (MACD) -1.17
Weekly Oscillators
Description Value Status Divergence Chart
Relative Strength Index (RSI) 28.47
Williams' Percentage Range (W%R) 95.00
Strong Oversold
Lane's Stochastic (%D-Slow) 22.33
Greed/Fear Indicator (GFI) 22.40
Moving Average Converg./Diverg. (MACD) -7.02
Trading Signals
Description Value Chart
Yearly Trendline Support 185.94
Parabolic System 184.28
Upper Bollinger Band 184.12
50 Day Moving Average 182.03
20 Day Moving Average 178.87
Monthly Trendline Resistance 177.76
Weekly Stochastic Crossing 176.42
Daily Stochastic Crossing 173.80
Lower Bollinger Band 173.77
Price 172.41
Monthly Trendline Support 170.65
Sector and Industry
Description Name Rank
Sector Real Estate 2
Industry Specialized REITs 10
Daily Trend
Description Value
Direction Down
Chart Pattern DownTrend
High 184.61
High Date 12/09/2025
Low 171.95
Low Date 12/19/2025
Weekly Trend
Monthly Trend
Description Value
Direction Down
Chart Pattern DownTrend
Status
Resistance
Support
High 184.61
High Date 12/09/2025
Low 171.95
Low Date 12/19/2025
Description Value
Direction Down
Chart Pattern Falling Wedge
Status Valid
Resistance 177.76
Support 170.65
High 234.33
High Date 07/24/2025
Low 171.95
Low Date 12/19/2025
Quarterly Trend
Yearly Trend
Description Value
Direction Down
Chart Pattern DownTrend
Status
Resistance
Support
High 243.56
High Date 09/10/2024
Low 171.95
Low Date 12/19/2025
Description Value
Direction Up
Chart Pattern Symmetric Triangle
Status Broken Support
Resistance 229.91
Support 185.94
Low 154.58
Low Date 10/06/2023
High 243.56
High Date 09/10/2024
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.