What is the current price of BIIB?

As of today, BIIB price is $225.71

What is year-to-date change in BIIB price?

BIIB price is up +28.25% year-to-date

BIIB price is up +50.87% year-over-year

BIIB price is down -14.57% over the past 3 years

BIIB price is currently -52.99% below its historical high of $480.18 set on March 20, 2015

BIIB last stock split was on January 18, 2001

BIIB next stock split has not yet been announced

Analysts set an average price target of $241.00 for BIIB

$225.71$7.28+3.33%

October 9, 2026| session closed

$225.71$7.28+3.33%

October 9, 2026| after-hours session closed

Current Value: As of today, BIIB price is $225.71, up +3.33% in the most recent trading session on October 9, 2026
Historical Performance: BIIB price is up +28.25% year-to-date, up +50.87% over the past 365 days
All-Time High Comparison: BIIB price is currently -52.99% below its historical high of $480.18 set on March 20, 2015
3-Year Low Comparison: BIIB price is +105.12% above its 3-year low of $110.04 reached on April 9, 2025
Target Comparison: BIIB price target is $241.00, +6.77% higher than its current market price
Upcoming Split: BIIB next stock split has not yet been announced

BIIB Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
Price	Oct 9, 26	$225.71	+3.3%	+7.1%	+13.5%	+28.3%	+50.9%	-14.6%	-21.0%
S&P 500	Oct 9, 26	7,811.54	+0.6%	+2.3%	+3.5%	+14.1%	+16.0%	+80.2%	+77.9%
NASDAQ	Oct 9, 26	27,366.17	+0.6%	+4.2%	+4.4%	+17.7%	+18.9%	+103.0%	+87.7%
Dow Jones	Oct 9, 26	51,654.95	+0.8%	-1.4%	-1.6%	+7.5%	+11.4%	+53.7%	+48.7%
XLV	Oct 9, 26	$170.81	+1.6%	+2.5%	+5.3%	+10.3%	+18.5%	+30.9%	+34.6%
200-Day SMA	Oct 9, 26	$196.44	+0.1%	+2.6%	+9.8%	+39.1%	+45.1%	-29.8%	-34.2%
20-Day SMA	Oct 9, 26	$222.36	+0.2%	+2.8%	+9.3%	+26.3%	+52.9%	-13.6%	-23.4%
50-Day SMA	Oct 9, 26	$217.05	+0.2%	+3.7%	+10.1%	+29.7%	+55.2%	-17.5%	-31.7%
Market Cap	Oct 9, 26	$33B	+3.3%	+7.1%	+13.6%	+29.1%	+52.0%	-12.9%	-20.6%
PE Ratio	Oct 9, 26	39.97	+3.3%	+7.1%	+13.4%	+100.0%	+193.0%	+52.1%	+42.9%
TTM Dividend Yield	Oct 9, 26	-	–	–	–	–	–	–	–

BIIB Price Highs Comparison
Period	High	Date	Current
1M	$230.49	Sep 28, 26	-2.1%
3M	$230.49	Sep 28, 26	-2.1%
6M	$230.49	Sep 28, 26	-2.1%
1Y	$230.49	Sep 28, 26	-2.1%
3Y	$269.43	Oct 17, 23	-16.2%
5Y	$319.76	Jun 12, 23	-29.4%
All	$480.18	Mar 20, 15	-53.0%

BIIB Price Lows Comparison
Period	Low	Date	Current
1M	$208.93	Sep 10, 26	+8.0%
3M	$186.03	Jul 15, 26	+21.3%
6M	$171.22	Apr 13, 26	+31.8%
1Y	$138.00	Oct 30, 25	+63.6%
3Y	$110.04	Apr 9, 25	+105.1%
5Y	$110.04	Apr 9, 25	+105.1%
All	$0.35	Dec 14, 94	>+9999.0%

What is the current price of BIIB?: As of today, BIIB price is $225.71
What is BIIB price today change?: BIIB price is up +3.33% today
What is year-to-date change in BIIB price?: BIIB price is up +28.25% year-to-date
What is 1-year change in BIIB price?: BIIB price is up +50.87% year-over-year
What is 3-year change in BIIB price?: BIIB price is down -14.57% over the past 3 years
How far is BIIB price from its all-time high?: BIIB price is currently -52.99% below its historical high of $480.18 set on March 20, 2015
When was BIIB last stock split?: BIIB last stock split was on January 18, 2001
When is BIIB next stock split?: BIIB next stock split has not yet been announced
What is the analyst average price target for BIIB?: Analysts set an average price target of $241.00 for BIIB

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