BIIB vs. SPY

Last updated Apr 1, 2026

Compare and contrast key facts about Biogen Inc. (BIIB) and State Street SPDR S&P 500 ETF (SPY).

SPY is a passively managed fund by State Street that tracks the performance of the S&P 500 Index. It was launched on Jan 22, 1993.

Performance

BIIB vs. SPY - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Biogen Inc. (BIIB) and State Street SPDR S&P 500 ETF (SPY). The values are adjusted to include any dividend payments, if applicable.

BIIB vs. SPY - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
BIIB Biogen Inc.	4.17%	15.09%	-40.91%	-6.55%	15.42%	-2.02%	-17.48%	-1.39%	-5.54%	12.34%
SPY State Street SPDR S&P 500 ETF	-4.37%	17.72%	24.89%	26.18%	-18.18%	28.73%	18.33%	31.22%	-4.57%	21.71%

Returns By Period

In the year-to-date period, BIIB achieves a 4.17% return, which is significantly higher than SPY's -4.37% return. Over the past 10 years, BIIB has underperformed SPY with an annualized return of -3.45%, while SPY has yielded a comparatively higher 13.98% annualized return.

BIIB

• 1D: -2.26%
• 1M: -4.43%
• YTD: 4.17%
• 6M: 30.88%
• 1Y: 33.97%
• 3Y*: -12.96%
• 5Y*: -8.04%
• 10Y*: -3.45%

SPY

• 1D: 2.91%
• 1M: -4.94%
• YTD: -4.37%
• 6M: -1.82%
• 1Y: 17.59%
• 3Y*: 18.19%
• 5Y*: 11.69%
• 10Y*: 13.98%

*Multi-year figures are annualized to reflect compound growth (CAGR)

Return for Risk

BIIB vs. SPY — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

BIIB

BIIB Risk / Return Rank: 73
BIIB Sharpe Ratio Rank: 75
BIIB Sortino Ratio Rank: 72
BIIB Omega Ratio Rank: 66
BIIB Calmar Ratio Rank: 77
BIIB Martin Ratio Rank: 77

SPY

SPY Risk / Return Rank: 64
SPY Sharpe Ratio Rank: 56
SPY Sortino Ratio Rank: 60
SPY Omega Ratio Rank: 65
SPY Calmar Ratio Rank: 65
SPY Martin Ratio Rank: 75

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

BIIB vs. SPY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Biogen Inc. (BIIB) and State Street SPDR S&P 500 ETF (SPY). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.

	BIIB	SPY	Difference
Sharpe ratio Return per unit of total volatility	0.99	0.93	+0.06
Sortino ratio Return per unit of downside risk	1.63	1.45	+0.18
Omega ratio Gain probability vs. loss probability	1.19	1.22	-0.04
Calmar ratio Return relative to maximum drawdown	1.90	1.53	+0.37
Martin ratio Return relative to average drawdown	4.80	7.30	-2.50
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

BIIB vs. SPY - Sharpe Ratio Comparison

The current BIIB Sharpe Ratio is 0.99, which is comparable to the SPY Sharpe Ratio of 0.93. The chart below compares the historical Sharpe Ratios of BIIB and SPY, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	BIIB	SPY	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.99	0.93	+0.06
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.21	0.69	-0.90
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	-0.08	0.78	-0.87
Sharpe Ratio (All Time) Calculated using the full available price history	0.22	0.56	-0.34

Correlation

The correlation between BIIB and SPY is 0.41, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.

Dividends

BIIB vs. SPY - Dividend Comparison

BIIB has not paid dividends to shareholders, while SPY's dividend yield for the trailing twelve months is around 1.14%.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BIIB Biogen Inc.	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
SPY State Street SPDR S&P 500 ETF	1.14%	1.07%	1.21%	1.40%	1.65%	1.20%	1.52%	1.75%	2.04%	1.80%	2.03%	2.06%

Drawdowns

BIIB vs. SPY - Drawdown Comparison

The maximum BIIB drawdown since its inception was -89.98%, which is greater than SPY's maximum drawdown of -55.19%. Use the drawdown chart below to compare losses from any high point for BIIB and SPY.

Drawdown Indicators

	BIIB	SPY	Difference
Max Drawdown Largest peak-to-trough decline	-89.98%	-55.19%	-34.79%
Max Drawdown (1Y) Largest decline over 1 year	-14.13%	-12.05%	-2.08%
Max Drawdown (5Y) Largest decline over 5 years	-72.66%	-24.50%	-48.16%
Max Drawdown (10Y) Largest decline over 10 years	-72.66%	-33.72%	-38.94%
Current Drawdown Current decline from peak	-61.48%	-6.24%	-55.24%
Average Drawdown Average peak-to-trough decline	-36.48%	-9.09%	-27.39%
Ulcer Index Depth and duration of drawdowns from previous peaks	6.78%	2.52%	+4.26%

Volatility

BIIB vs. SPY - Volatility Comparison

Biogen Inc. (BIIB) has a higher volatility of 8.91% compared to State Street SPDR S&P 500 ETF (SPY) at 5.31%. This indicates that BIIB's price experiences larger fluctuations and is considered to be riskier than SPY based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BIIB	SPY	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.91%	5.31%	+3.60%
Volatility (6M) Calculated over the trailing 6-month period	24.16%	9.47%	+14.69%
Volatility (1Y) Calculated over the trailing 1-year period	34.48%	19.05%	+15.43%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	38.11%	17.06%	+21.05%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	41.40%	17.92%	+23.48%