NCPB vs. IUSB

Last updated Jun 4, 2026

NCPB (Nuveen Core Plus Bond ETF) and IUSB (iShares Core Universal USD Bond ETF) are both Intermediate Core-Plus Bond funds. NCPB is actively managed, while IUSB is passively managed. Over the past year, NCPB returned 6.20% vs 5.54% for IUSB. With a 0.97 correlation, they move nearly in lockstep. NCPB charges 0.30%/yr vs 0.06%/yr for IUSB.

Performance

NCPB vs. IUSB - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Nuveen Core Plus Bond ETF (NCPB) and iShares Core Universal USD Bond ETF (IUSB). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, NCPB achieves a 0.47% return, which is significantly higher than IUSB's 0.43% return.

NCPB

• 1D: -0.20%
• 1M: 0.41%
• YTD: 0.47%
• 6M: 0.53%
• 1Y: 6.20%
• 3Y*: —
• 5Y*: —
• 10Y*: —

IUSB

• 1D: -0.17%
• 1M: 0.31%
• YTD: 0.43%
• 6M: 0.31%
• 1Y: 5.54%
• 3Y*: 4.51%
• 5Y*: 0.44%
• 10Y*: 1.94%

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

NCPB vs. IUSB - Yearly Performance Comparison

	2026 (YTD)	2025	2024
NCPB Nuveen Core Plus Bond ETF	0.47%	7.69%	3.55%
IUSB iShares Core Universal USD Bond ETF	0.43%	7.38%	2.63%

Correlation

The correlation between NCPB and IUSB is 0.96 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.96
Correlation (All Time) Calculated using the full available price history since Mar 7, 2024	0.97

The correlation between NCPB and IUSB has been stable across timeframes, ranging from 0.96 to 0.97 - a consistent structural relationship.

Return for Risk

NCPB vs. IUSB — Risk / Return Rank

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

NCPB

NCPB Risk / Return Rank: 49
NCPB Sharpe Ratio Rank: 52
NCPB Sortino Ratio Rank: 55
NCPB Omega Ratio Rank: 53
NCPB Calmar Ratio Rank: 44
NCPB Martin Ratio Rank: 43

IUSB

IUSB Risk / Return Rank: 43
IUSB Sharpe Ratio Rank: 43
IUSB Sortino Ratio Rank: 45
IUSB Omega Ratio Rank: 41
IUSB Calmar Ratio Rank: 43
IUSB Martin Ratio Rank: 41

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.

NCPB vs. IUSB - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Nuveen Core Plus Bond ETF (NCPB) and iShares Core Universal USD Bond ETF (IUSB). 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.

	NCPB	IUSB	Difference
Sharpe ratio: Return per unit of total volatility	1.76	1.54	+0.22
Sortino ratio: Return per unit of downside risk	2.61	2.30	+0.31
Omega ratio: Gain probability vs. loss probability	1.32	1.27	+0.05
Calmar ratio: Return relative to maximum drawdown	2.16	2.20	-0.04
Martin ratio: Return relative to average drawdown	6.87	6.68	+0.19
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

NCPB vs. IUSB - Sharpe Ratio Comparison

The current NCPB Sharpe Ratio is 1.76, which is comparable to the IUSB Sharpe Ratio of 1.54. The chart below compares the historical Sharpe Ratios of NCPB and IUSB, 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

	NCPB	IUSB	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.76	1.54	+0.22
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.08	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.39	—
Sharpe Ratio (All Time) Calculated using the full available price history	1.21	0.46	+0.75

Drawdowns

NCPB vs. IUSB - Drawdown Comparison

The maximum NCPB drawdown since its inception was -3.59%, smaller than the maximum IUSB drawdown of -17.90%. Use the drawdown chart below to compare losses from any high point for NCPB and IUSB.

Drawdown Indicators

	NCPB	IUSB	Difference
Max Drawdown Largest peak-to-trough decline	-3.59%	-17.90%	+14.31%
Max Drawdown (1Y) Largest decline over 1 year	-2.88%	-2.53%	-0.35%
Max Drawdown (3Y) Largest decline over 3 years	—	-5.82%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-17.87%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-17.90%	—
Current Drawdown Current decline from peak	-1.37%	-1.33%	-0.04%
Average Drawdown Average peak-to-trough decline	-0.92%	-3.59%	+2.67%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.90%	0.83%	+0.07%

Volatility

NCPB vs. IUSB - Volatility Comparison

Nuveen Core Plus Bond ETF (NCPB) and iShares Core Universal USD Bond ETF (IUSB) have volatilities of 1.25% and 1.24%, 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

	NCPB	IUSB	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.25%	1.24%	+0.01%
Volatility (6M) Calculated over the trailing 6-month period	2.63%	2.62%	+0.01%
Volatility (1Y) Calculated over the trailing 1-year period	3.55%	3.62%	-0.07%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	4.34%	5.79%	-1.45%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.34%	5.04%	-0.70%

NCPB vs. IUSB - Expense Ratio Comparison

NCPB has a 0.30% expense ratio, which is higher than IUSB's 0.06% expense ratio.

Dividends

NCPB vs. IUSB - Dividend Comparison

NCPB's dividend yield for the trailing twelve months is around 5.22%, more than IUSB's 4.23% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
IUSB iShares Core Universal USD Bond ETF	4.23%	4.17%	4.04%	3.46%	2.53%	1.74%	2.68%	3.04%	2.98%	2.56%	2.60%	1.95%
NCPB Nuveen Core Plus Bond ETF	5.22%	5.21%	5.14%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both NCPB and IUSB in my portfolio?

With a correlation of 0.96, NCPB and IUSB move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, NCPB or IUSB?

NCPB has higher volatility (1.25%) compared to IUSB (1.24%). In terms of maximum drawdown, NCPB dropped -3.59% vs IUSB's -17.90%.

Which ETF is better, NCPB or IUSB?

On 1-year performance, NCPB leads with 6.20% vs 5.54% for IUSB. On fees, IUSB is cheaper at 0.06% per year. Their volatility is very similar. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, NCPB or IUSB?

Over the 1-year period, NCPB has performed better with a 6.20% return vs 5.54%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, NCPB or IUSB?

IUSB is cheaper with a 0.06% expense ratio, compared with 0.30% for NCPB.

Which ETF pays a higher dividend yield, NCPB or IUSB?

NCPB has the higher dividend yield at 5.22%, compared with 4.23% for IUSB.

What is the main difference between NCPB and IUSB?

They also come from different issuers: Nuveen and iShares. Their fees differ too: 0.30% for NCPB and 0.06% for IUSB.

Which has better risk-adjusted returns?

NCPB currently has the higher Sharpe Ratio (1.76 vs 1.54), 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.