NAC vs. NBB

Last updated Jul 14, 2026

NAC (Nuveen California Quality Municipal Income Fund) and NBB (Nuveen Taxable Municipal Income Fund) are both mutual funds - NAC is a Municipal Bonds fund managed by Nuveen, while NBB is a Corporate Bonds fund managed by Nuveen. Over the past 10 years, NAC returned 2.23%/yr vs 2.55%/yr for NBB. At a 0.31 correlation, their price movements are largely independent. NAC charges 0.04%/yr vs 0.04%/yr for NBB.

Performance

NAC vs. NBB - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Nuveen California Quality Municipal Income Fund (NAC) and Nuveen Taxable Municipal Income Fund (NBB). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, NAC achieves a 6.12% return, which is significantly higher than NBB's 2.20% return. Over the past 10 years, NAC has underperformed NBB with an annualized return of 2.23%, while NBB has yielded a comparatively higher 2.55% annualized return.

NAC

• 1D: -0.17%
• 1M: 1.17%
• 6M: 4.52%
• YTD: 6.12%
• 1Y: 16.34%
• 3Y*: 10.99%
• 5Y*: 0.08%
• 10Y*: 2.23%

NBB

• 1D: 0.26%
• 1M: -0.72%
• 6M: 0.93%
• YTD: 2.20%
• 1Y: 6.70%
• 3Y*: 7.93%
• 5Y*: -1.13%
• 10Y*: 2.55%

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

NAC vs. NBB - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
NAC Nuveen California Quality Municipal Income Fund	6.12%	13.09%	8.67%	4.47%	-25.66%	7.62%	6.29%	22.27%	-6.23%	6.79%
NBB Nuveen Taxable Municipal Income Fund	2.20%	13.52%	1.32%	7.62%	-24.60%	0.91%	14.45%	19.48%	-6.37%	12.96%

Correlation

The correlation between NAC and NBB is 0.37, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.37
Correlation (3Y) Calculated over the trailing 3-year period	0.48
Correlation (5Y) Calculated over the trailing 5-year period	0.46
Correlation (10Y) Calculated over the trailing 10-year period	0.38
Correlation (All Time) Calculated using the full available price history since Apr 28, 2010	0.31

The correlation between NAC and NBB shifts across timeframes, from 0.31 (all time) to 0.48 (3 years), reflecting how their relationship changes across market environments.

Return for Risk

NAC vs. NBB — Risk / Return Rank

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

NAC

NAC Risk / Return Rank: 84
NAC Sharpe Ratio Rank: 82
NAC Sortino Ratio Rank: 85
NAC Omega Ratio Rank: 80
NAC Calmar Ratio Rank: 86
NAC Martin Ratio Rank: 85

NBB

NBB Risk / Return Rank: 14
NBB Sharpe Ratio Rank: 13
NBB Sortino Ratio Rank: 13
NBB Omega Ratio Rank: 12
NBB Calmar Ratio Rank: 15
NBB Martin Ratio Rank: 15

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.

NAC vs. NBB - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Nuveen California Quality Municipal Income Fund (NAC) and Nuveen Taxable Municipal Income Fund (NBB). 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.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	NAC	NBB	Difference
Sharpe ratio: Return per unit of total volatility	2.14	0.69	+1.45
Sortino ratio: Return per unit of downside risk	3.29	1.06	+2.23
Omega ratio: Gain probability vs. loss probability	1.40	1.12	+0.28
Calmar ratio: Return relative to maximum drawdown	3.31	0.99	+2.32
Martin ratio: Return relative to average drawdown	12.25	2.94	+9.31

NAC vs. NBB - Sharpe Ratio Comparison

The current NAC Sharpe Ratio is 2.14, which is higher than the NBB Sharpe Ratio of 0.69. The chart below compares the historical Sharpe Ratios of NAC and NBB, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

NAC vs. NBB - Drawdown Comparison

The maximum NAC drawdown since its inception was -46.41%, which is greater than NBB's maximum drawdown of -33.51%. Use the drawdown chart below to compare losses from any high point for NAC and NBB.

Drawdown Indicators

	NAC	NBB	Difference
Max Drawdown Largest peak-to-trough decline	-46.41%	-33.51%	-12.90%
Max Drawdown (1Y) Largest decline over 1 year	-4.96%	-6.81%	+1.85%
Max Drawdown (3Y) Largest decline over 3 years	-13.33%	-11.39%	-1.94%
Max Drawdown (5Y) Largest decline over 5 years	-36.31%	-33.51%	-2.80%
Max Drawdown (10Y) Largest decline over 10 years	-36.31%	-33.51%	-2.80%
Current Drawdown Current decline from peak	-0.82%	-6.58%	+5.76%
Average Drawdown Average peak-to-trough decline	-8.38%	-7.66%	-0.72%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.34%	2.28%	-0.94%

Volatility

NAC vs. NBB - Volatility Comparison

The current volatility for Nuveen California Quality Municipal Income Fund (NAC) is 1.39%, while Nuveen Taxable Municipal Income Fund (NBB) has a volatility of 2.27%. This indicates that NAC experiences smaller price fluctuations and is considered to be less risky than NBB based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	NAC	NBB	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.39%	2.27%	-0.88%
Volatility (6M) Calculated over the trailing 6-month period	5.57%	7.39%	-1.82%
Volatility (1Y) Calculated over the trailing 1-year period	7.68%	9.75%	-2.07%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	10.75%	13.78%	-3.03%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	12.21%	14.26%	-2.05%

NAC vs. NBB - Expense Ratio Comparison

NAC has a 0.04% expense ratio, which is higher than NBB's 0.04% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

NAC vs. NBB - Dividend Comparison

NAC's dividend yield for the trailing twelve months is around 7.27%, less than NBB's 7.44% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
NAC Nuveen California Quality Municipal Income Fund	7.27%	7.47%	6.63%	4.03%	5.47%	4.18%	4.17%	4.38%	5.34%	5.54%	6.25%	6.05%
NBB Nuveen Taxable Municipal Income Fund	7.44%	7.33%	6.96%	8.33%	7.86%	5.50%	4.67%	5.54%	6.38%	5.62%	6.35%	6.79%

Frequently Asked Questions

Can I hold both NAC and NBB in my portfolio?

NAC and NBB have a correlation of 0.37, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, NAC or NBB?

NBB has higher volatility (2.27%) compared to NAC (1.39%). In terms of maximum drawdown, NAC dropped -46.41% vs NBB's -33.51%.

Which has better risk-adjusted returns?

NAC currently has the higher Sharpe Ratio (2.14 vs 0.69), 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.