DXCM vs BIIB Stock Comparison

DexCom and Biogen stock analysis with 20 years of historical data and interactive charts

Compare DXCM vs BIIB


DXCM

Stock Price (October 2005) $11.55
Stock Price (September 2025) $66.70
10-Year Growth 233.75%
20-Year Growth 650.02%
Market Cap (September 2025) $26.39 Billion

BIIB

Stock Price (October 2005) $39.58
Stock Price (September 2025) $138.46
10-Year Growth -66.27%
20-Year Growth 164.70%
Market Cap (September 2025) $20.54 Billion

20-Year Performance Chart


Interactive visualization of DXCM vs BIIB stock performance (2005-2025)

20-Year Performance Data


Year DXCM BIIB
2025 -14.28% -6.61%
2024 -36.82% -42.88%
2023 +8.16% -5.08%
2022 -13.02% +13.43%
2021 +50.10% -1.25%
2020 +68.53% -16.78%
2019 +89.91% -2.61%
2018 +106.59% -9.95%
2017 -1.48% +9.21%
2016 -23.94% -3.75%
2015 +50.25% -10.43%
2014 +58.42% +21.09%
2013 +155.67% +86.38%
2012 +43.96% +28.96%
2011 -32.09% +63.76%
2010 +59.46% +25.00%
2009 +192.39% +10.33%
2008 -69.16% -14.75%
2007 -10.63% +15.39%
2006 -32.00% +5.24%
2005 +25.38% +13.43%
20-Year Average Return for DXCM 8.23%
20-Year Average Return for BIIB 32.50%

24 Months Performance


Month DXCM BIIB
September 2025 +10.42% -0.32%
August 2025 +5.23% -0.20%
July 2025 +3.48% +1.62%
June 2025 -2.04% +4.42%
May 2025 -18.11% -6.83%
April 2025 -5.69% +9.04%
March 2025 +25.92% +3.56%
February 2025 -1.49% +1.31%
January 2025 -9.59% +4.22%
December 2024 +1.98% +7.40%
November 2024 -9.80% +8.19%
October 2024 -6.36% +9.66%
September 2024 +7.94% +5.67%
August 2024 +1.41% +2.90%
July 2024 +65.39% +8.71%
June 2024 +1.63% -0.87%
May 2024 +5.99% -3.92%
April 2024 +8.28% +0.00%
March 2024 -12.23% +2.47%
February 2024 +6.54% +14.21%
January 2024 +1.43% +8.53%
December 2023 -6.02% -9.32%
November 2023 -18.52% +2.37%
October 2023 +0.00% +0.00%
24 Months Average Return for DXCM 3.03%
24 Months Average Return for BIIB 2.32%

Ready to Make Informed Investment Decisions?

Get access to comprehensive historical stock data and professional analysis to power your investment research and portfolio decisions.