BBN vs. SPY

Last updated Jun 3, 2026

BBN (BlackRock Taxable Municipal Bond Trust) and SPY (State Street SPDR S&P 500 ETF) are both funds - BBN is a Municipal Bonds fund actively managed by BlackRock, while SPY is a S&P 500 fund tracking the S&P 500 Index. BBN is actively managed, while SPY is passively managed. Over the past 10 years, BBN returned 2.83%/yr vs 15.57%/yr for SPY. At a 0.09 correlation, their price movements are largely independent. BBN charges 2.32%/yr vs 0.09%/yr for SPY.

Performance

BBN vs. SPY - Performance Comparison

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

Returns By Period

In the year-to-date period, BBN achieves a 1.25% return, which is significantly lower than SPY's 11.69% return. Over the past 10 years, BBN has underperformed SPY with an annualized return of 2.83%, while SPY has yielded a comparatively higher 15.57% annualized return.

BBN

• 1D: 0.38%
• 1M: -0.25%
• YTD: 1.25%
• 6M: -3.81%
• 1Y: 9.27%
• 3Y*: 6.28%
• 5Y*: -1.92%
• 10Y*: 2.83%

SPY

• 1D: 0.14%
• 1M: 5.40%
• YTD: 11.69%
• 6M: 12.09%
• 1Y: 29.62%
• 3Y*: 22.64%
• 5Y*: 14.20%
• 10Y*: 15.57%

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

BBN vs. SPY - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
BBN BlackRock Taxable Municipal Bond Trust	1.25%	8.59%	6.01%	3.55%	-31.02%	2.68%	16.95%	22.78%	-2.86%	15.03%
SPY State Street SPDR S&P 500 ETF	11.69%	17.72%	24.89%	26.18%	-18.18%	28.73%	18.33%	31.22%	-4.57%	21.71%

Correlation

The correlation between BBN and SPY is 0.17, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.17
Correlation (3Y) Calculated over the trailing 3-year period	0.23
Correlation (5Y) Calculated over the trailing 5-year period	0.21
Correlation (10Y) Calculated over the trailing 10-year period	0.15
Correlation (All Time) Calculated using the full available price history since Aug 31, 2010	0.09

The correlation between BBN and SPY shifts across timeframes, from 0.09 (all time) to 0.23 (3 years), reflecting how their relationship changes across market environments.

Return for Risk

BBN vs. SPY — Risk / Return Rank

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

BBN

BBN Risk / Return Rank: 12
BBN Sharpe Ratio Rank: 13
BBN Sortino Ratio Rank: 13
BBN Omega Ratio Rank: 12
BBN Calmar Ratio Rank: 12
BBN Martin Ratio Rank: 9

SPY

SPY Risk / Return Rank: 75
SPY Sharpe Ratio Rank: 77
SPY Sortino Ratio Rank: 75
SPY Omega Ratio Rank: 76
SPY Calmar Ratio Rank: 68
SPY Martin Ratio Rank: 80

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.

BBN vs. SPY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for BlackRock Taxable Municipal Bond Trust (BBN) 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.

	BBN	SPY	Difference
Sharpe ratio Return per unit of total volatility	0.99	2.52	-1.54
Sortino ratio Return per unit of downside risk	1.52	3.42	-1.89
Omega ratio Gain probability vs. loss probability	1.18	1.46	-0.28
Calmar ratio Return relative to maximum drawdown	1.16	3.42	-2.25
Martin ratio Return relative to average drawdown	2.69	15.93	-13.23
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

BBN vs. SPY - Sharpe Ratio Comparison

The current BBN Sharpe Ratio is 0.99, which is lower than the SPY Sharpe Ratio of 2.52. The chart below compares the historical Sharpe Ratios of BBN and SPY, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	BBN	SPY	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.99	2.52	-1.54
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.12	0.84	-0.96
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.19	0.87	-0.68
Sharpe Ratio (All Time) Calculated using the full available price history	0.40	0.59	-0.19

Drawdowns

BBN vs. SPY - Drawdown Comparison

The maximum BBN drawdown since its inception was -38.37%, smaller than the maximum SPY drawdown of -55.19%. Use the drawdown chart below to compare losses from any high point for BBN and SPY.

Drawdown Indicators

	BBN	SPY	Difference
Max Drawdown Largest peak-to-trough decline	-38.37%	-55.19%	+16.82%
Max Drawdown (1Y) Largest decline over 1 year	-7.55%	-8.88%	+1.33%
Max Drawdown (3Y) Largest decline over 3 years	-11.85%	-18.76%	+6.91%
Max Drawdown (5Y) Largest decline over 5 years	-38.37%	-24.50%	-13.87%
Max Drawdown (10Y) Largest decline over 10 years	-38.37%	-33.72%	-4.65%
Current Drawdown Current decline from peak	-18.08%	0.00%	-18.08%
Average Drawdown Average peak-to-trough decline	-10.31%	-9.05%	-1.26%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.26%	1.91%	+1.35%

Volatility

BBN vs. SPY - Volatility Comparison

BlackRock Taxable Municipal Bond Trust (BBN) and State Street SPDR S&P 500 ETF (SPY) have volatilities of 2.64% and 2.75%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BBN	SPY	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.64%	2.75%	-0.11%
Volatility (6M) Calculated over the trailing 6-month period	7.04%	8.89%	-1.85%
Volatility (1Y) Calculated over the trailing 1-year period	9.45%	11.81%	-2.36%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	15.50%	17.05%	-1.55%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	15.07%	17.94%	-2.87%

BBN vs. SPY - Expense Ratio Comparison

BBN has a 2.32% expense ratio, which is higher than SPY's 0.09% expense ratio.

Dividends

BBN vs. SPY - Dividend Comparison

BBN's dividend yield for the trailing twelve months is around 7.31%, more than SPY's 0.97% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BBN BlackRock Taxable Municipal Bond Trust	7.31%	7.01%	6.92%	7.16%	7.91%	5.45%	5.05%	5.66%	7.09%	6.82%	7.32%	7.54%
SPY State Street SPDR S&P 500 ETF	0.97%	1.07%	1.21%	1.40%	1.65%	1.20%	1.52%	1.75%	2.04%	1.80%	2.03%	2.06%

Frequently Asked Questions

Can I hold both BBN and SPY in my portfolio?

BBN and SPY have a correlation of 0.17, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, BBN or SPY?

SPY has higher volatility (2.75%) compared to BBN (2.64%). In terms of maximum drawdown, BBN dropped -38.37% vs SPY's -55.19%.

Which has better risk-adjusted returns?

SPY currently has the higher Sharpe Ratio (2.52 vs 0.99), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.