The Greedy Trader Weekly Analysis
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- 10/10/2025 -
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BIOGEN IDEC INC (BIIB) Technical Analysis

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Summary:
Weekly :Overbought sectorMACD bearish divergenceBroken trend resistance line
Daily :The price is close to the moving average in the center of the Bollinger Bands
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It was the negative week for the BIOGEN IDEC INC (BIIB). During the week, the BIIB dropped -13.31 points, or -8.32%, and closed at 146.57 on Friday, October 10, 2025. BIIB was trading at average weekly trading volume.

BIIB is a member of Health Care Sector. Health Care is the most overbought 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 BIIB long-term trend chart]
A long-term downtrend had started on June 12, 2023 at 319.76 and reached 110.00 on April 9, 2025. BIIB lost 209.76 points, or 65.60%, in 95 weeks. The chart has formed a Falling Channel chart pattern. The downtrend resistance line (71.45) is broken. A broken support is considered to be a long-term bullish 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 resistance line in a long-term trend.

Medium-term trend: [See BIIB medium-term trend chart]
A medium-term uptrend had started on April 9, 2025 at 110.00 and reached 160.20 on October 3, 2025. BIIB gained -50.20 points, or -45.64%, in 25 weeks. The chart has formed a Rising Channel chart pattern. The trend support level is at 139.72 and resistance is at 155.69. A Rising 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 Rising Channel chart pattern help, or use a Technical Stock Screener to see the list of stocks with Rising Channel pattern in a medium-term trend.

Weekly Technical Indicators: [See BIIB weekly technical indicators chart]
Weekly technical indicators are neutral. Weekly MACD has bearish divergence. Use the following links to access the MACD help, or use the Technical Stock Screener to see the list of stocks with weekly MACD bearish divergence. The divergence between price and indicator is considering one of the most important buy/sell stocks trading 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.

The weekly MACD line is above its signal line since May 9, 2025. This is an indication that the medium-term trend is up. The distance between MACD and the signal line is near its high and getting bigger. It indicates that the current medium-term uptrend is strong. Use the following link to access a MACD help.

Short-term trend: [See BIIB short-term trend chart]
A short-term uptrend had started on September 29, 2025 at 135.39 and reached 160.20 on October 3, 2025. BIIB gained -24.81 points, or -18.32%, in 4 days. The price is now at the 54.94% retracement level.

Daily Technical Indicators: [See BIIB daily technical indicators chart]
Daily technical indicators are neutral.

The daily MACD line is above its signal line since September 30, 2025. This is an indication that the short-term trend is up. The distance between MACD and the signal line is low and getting smaller. It indicates that the current short-term uptrend is getting weak.

The price is close to 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) 56.95
Williams' Percentage Range (W%R) 41.10
Lane's Stochastic (%D-Slow) 60.91
Greed/Fear Indicator (GFI) 58.92
Moving Average Converg./Diverg. (MACD) 3.08
Weekly Oscillators
Description Value Status Divergence Chart
Relative Strength Index (RSI) 57.57
Williams' Percentage Range (W%R) 26.00
Lane's Stochastic (%D-Slow) 74.60
Greed/Fear Indicator (GFI) 68.32
Moving Average Converg./Diverg. (MACD) -2.10 Bearish
Trading Signals
Description Value Chart
Upper Bollinger Band 159.99
Monthly Trendline Resistance 155.69
Daily Stochastic Crossing 151.88
Weekly Stochastic Crossing 151.86
Price 146.57
20 Day Moving Average 145.51
Parabolic System 144.60
50 Day Moving Average 140.21
Monthly Trendline Support 139.72
Quarterly Trendline Resistance 137.42
Lower Bollinger Band 132.74
Sector and Industry
Description Name Rank
Sector Health Care 9
Industry Biotechnology 72
Daily Trend
Description Value
Direction Down
Chart Pattern DownTrend
High 160.20
High Date 10/03/2025
Low 144.74
Low Date 10/10/2025
Weekly Trend
Monthly Trend
Description Value
Direction Up
Chart Pattern Uptrend
Status
Resistance
Support
Low 135.39
Low Date 09/29/2025
High 160.20
High Date 10/03/2025
Description Value
Direction Up
Chart Pattern Rising Channel
Status Valid
Resistance 155.69
Support 139.72
Low 110.00
Low Date 04/09/2025
High 160.20
High Date 10/03/2025
Quarterly Trend
Yearly Trend
Description Value
Direction Down
Chart Pattern Falling Channel
Status Broken Resistance
Resistance 137.42
Support 71.45
High 319.76
High Date 06/12/2023
Low 110.00
Low Date 04/09/2025
Description Value
Direction Down
Chart Pattern DownTrend
Status
Resistance
Support
High 480.18
High Date 03/20/2015
Low 110.00
Low Date 04/09/2025
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.