AMGN vs BIIB Stock Comparison
Amgen and Biogen stock analysis with 20 years of historical data and interactive charts
Compare AMGN vs BIIB
AMGN
Stock Price (November 2005)
$75.25
Stock Price (October 2025)
$288.46
10-Year Growth
98.46%
20-Year Growth
194.25%
Market Cap (October 2025)
$159.52 Billion
BIIB
Stock Price (November 2005)
$40.51
Stock Price (October 2025)
$147.99
10-Year Growth
-56.81%
20-Year Growth
174.16%
Market Cap (October 2025)
$22.22 Billion
20-Year Performance Chart
Interactive visualization of AMGN vs BIIB stock performance (2005-2025)
20-Year Performance Data
| Year | AMGN | BIIB |
|---|---|---|
| 2025 | +18.00% | +2.85% |
| 2024 | -9.71% | -42.88% |
| 2023 | +13.89% | -5.08% |
| 2022 | +19.52% | +13.43% |
| 2021 | +2.34% | -1.25% |
| 2020 | -1.59% | -16.78% |
| 2019 | +29.44% | -2.61% |
| 2018 | +13.21% | -9.95% |
| 2017 | +18.60% | +9.21% |
| 2016 | -5.24% | -3.75% |
| 2015 | +3.56% | -10.43% |
| 2014 | +40.22% | +21.09% |
| 2013 | +30.34% | +86.38% |
| 2012 | +37.05% | +28.96% |
| 2011 | +16.79% | +63.76% |
| 2010 | -4.89% | +25.00% |
| 2009 | -4.10% | +10.33% |
| 2008 | +23.93% | -14.75% |
| 2007 | -32.11% | +15.39% |
| 2006 | -15.00% | +5.24% |
| 2005 | +4.74% | +12.39% |
20-Year Average Return for AMGN
9.71%
20-Year Average Return for BIIB
8.71%
24 Months Performance
| Month | AMGN | BIIB |
|---|---|---|
| October 2025 | -0.02% | +0.03% |
| September 2025 | -1.65% | +0.32% |
| August 2025 | -2.30% | +0.20% |
| July 2025 | +1.58% | -1.59% |
| June 2025 | -3.21% | -4.23% |
| May 2025 | +2.45% | +7.33% |
| April 2025 | -5.21% | -8.29% |
| March 2025 | +0.25% | -3.44% |
| February 2025 | +7.50% | -1.29% |
| January 2025 | +10.08% | -4.05% |
| December 2024 | -6.28% | -6.89% |
| November 2024 | -10.68% | -7.57% |
| October 2024 | -0.05% | -8.81% |
| September 2024 | -2.51% | -5.37% |
| August 2024 | +0.19% | -2.82% |
| July 2024 | +6.90% | -8.01% |
| June 2024 | +1.64% | +0.88% |
| May 2024 | +11.05% | +4.08% |
| April 2024 | -3.22% | +0.00% |
| March 2024 | +1.42% | -2.41% |
| February 2024 | -14.97% | -12.44% |
| January 2024 | +5.67% | -7.86% |
| December 2023 | +5.71% | +10.28% |
| November 2023 | +4.19% | -2.31% |
24 Months Average Return for AMGN
0.36%
24 Months Average Return for BIIB
-2.68%
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