Biogen Inc. company logo
Biogen Inc. logo

Biogen Inc. (BIIB) stock Relative Strength Index

14-Day RSI

47.8410.14-17.49%

Summary

Current Value
As of today, BIIB 14-day RSI is 47.84, down -17.49% on
Current Value Category
Based on its current 14-day relative strength index, BIIB falls into the weakening momentum category
1-Year High
BIIB 14-day RSI reached a 1-year high of 79.99 on
1-Year Low
BIIB 14-day RSI reached a 1-year low of 35.55 on

RSI Chart

SUGGESTED SERIES

Performance

BIIB Performance
MetricDateValue1D1M3MYTD1Y3Y5Y
14-Day RSI47.84-17.5%-11.6%-5.4%-14.2%-21.3%+36.8%+46.8%
Price$212.50-3.8%+2.2%+10.3%+20.8%+50.3%-17.9%-33.9%
200-Day SMA$191.27+0.1%+3.4%+11.0%+35.5%+40.0%-32.6%-34.8%
50-Day SMA$209.46-0.0%+3.7%+11.6%+25.2%+57.8%-22.8%-38.3%
20-Day SMA$216.04+0.1%+6.1%+11.3%+22.7%+58.0%-18.6%-36.5%
Beta0.34+6.3%+30.8%-8.1%-40.4%-43.3%-64.6%-52.1%
ATR$6.20+5.4%-16.1%+9.2%+49.3%+45.0%+28.9%-25.6%
10-Day Volatility29.25%+34.2%+1.9%+5.0%+71.5%-19.5%+161.6%+104.5%
1-Month Volatility30.37%+16.7%-35.9%-12.7%+40.9%-11.2%+104.0%+68.1%
3-Month Volatility39.61%+2.5%-3.1%+19.3%+53.4%+26.6%+115.4%+30.6%
1-Year Volatility35.37%+0.9%-0.8%+6.4%+9.2%+18.4%-23.6%-50.1%

RSI Highs

BIIB 14-Day RSI Highs Comparison
PeriodHighDateCurrent
1M65.67-27.1%
3M69.82-31.5%
6M69.82-31.5%
1Y79.99-40.2%
3Y79.99-40.2%
5Y80.91-40.9%
All93.91-49.1%

RSI Lows

BIIB 14-Day RSI Lows Comparison
PeriodLowDateCurrent
1M47.84at low
3M42.42+12.8%
6M36.28+31.9%
1Y35.55+34.6%
3Y17.51+173.2%
5Y17.51+173.2%
All9.03+429.8%

RSI History

DateValueChange
47.84-14.2%
55.76+25.4%
44.46-29.6%
63.11+57.4%
40.09-17.6%
48.66+5.7%
46.03-11.5%
52.01+14.2%
45.54-2.4%
46.64+12.3%
41.53-31.4%
60.53+15.8%
52.29-3.9%
54.42+31.0%
41.53-13.0%
47.75-16.3%
57.07-26.0%
77.09+38.1%
DateValueChange
55.84+68.9%
33.06-25.7%
44.47-22.6%
57.43-5.1%
60.49+23.8%
48.88+26.4%
38.68-24.9%
51.50+8.7%
47.36-37.3%
75.53+9.1%
69.22+46.3%
47.30-16.7%
56.79-12.0%
64.56+66.9%
38.69-17.0%
46.59+43.0%
32.59-28.1%
45.32-

FAQ

What is the current 14-day RSI of BIIB?
As of today, BIIB 14-day RSI is 47.84
What 14-day RSI category does BIIB fall into?
Based on its current 14-day relative strength index, BIIB falls into the weakening momentum category
What is BIIB 14-day RSI 1-year high?
BIIB 14-day RSI reached a 1-year high of 79.99 on November 28, 2025
What is BIIB 14-day RSI 1-year low?
BIIB 14-day RSI reached a 1-year low of 35.55 on December 5, 2025

Data Sources & References

  1. BIIB Official Website www.biogen.com
  2. Most Recent Annual Report (10-K) www.sec.gov/Archives/edgar/data/875045/000087504526000013/0000875045-26-000013-index.htm
  3. BIIB Profile on Yahoo Finance finance.yahoo.com/quote/BIIB
  4. BIIB Profile on NASDAQ.com www.nasdaq.com/market-activity/stocks/biib