SPXB vs. USIG

Last updated Apr 1, 2026

Compare and contrast key facts about ProShares S&P 500 Bond ETF (SPXB) and iShares Broad USD Investment Grade Corporate Bond ETF (USIG).

SPXB and USIG are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. SPXB is a passively managed fund by ProShares that tracks the performance of the S&P 500 MarketAxess Investment Grade Corporate Bond Index. It was launched on May 1, 2018. USIG is a passively managed fund by iShares that tracks the performance of the ICE BofA US Corporate. It was launched on Jan 5, 2007. Both SPXB and USIG are passive ETFs, meaning that they are not actively managed but aim to replicate the performance of the underlying index as closely as possible.

Performance

SPXB vs. USIG - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in ProShares S&P 500 Bond ETF (SPXB) and iShares Broad USD Investment Grade Corporate Bond ETF (USIG). The values are adjusted to include any dividend payments, if applicable.

SPXB vs. USIG - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
SPXB ProShares S&P 500 Bond ETF	0.00%	0.00%	-3.45%	8.83%	-16.66%	-1.89%	10.33%	15.34%	1.13%
USIG iShares Broad USD Investment Grade Corporate Bond ETF	-0.29%	7.86%	2.56%	8.71%	-15.30%	-1.34%	9.44%	13.99%	1.27%

Returns By Period

SPXB

• 1D: —
• 1M: —
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

USIG

• 1D: 0.51%
• 1M: -1.80%
• YTD: -0.29%
• 6M: 0.41%
• 1Y: 5.06%
• 3Y*: 4.93%
• 5Y*: 0.82%
• 10Y*: 2.72%

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

SPXB vs. USIG - Expense Ratio Comparison

SPXB has a 0.15% expense ratio, which is higher than USIG'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%.

SPXB

ProShares S&P 500 Bond ETF

USIG

iShares Broad USD Investment Grade Corporate Bond ETF

Return for Risk

SPXB vs. USIG — Risk / Return Rank

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

USIG

USIG Risk / Return Rank: 60
USIG Sharpe Ratio Rank: 59
USIG Sortino Ratio Rank: 54
USIG Omega Ratio Rank: 53
USIG Calmar Ratio Rank: 74
USIG Martin Ratio Rank: 62

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.

SPXB vs. USIG - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for ProShares S&P 500 Bond ETF (SPXB) and iShares Broad USD Investment Grade Corporate Bond ETF (USIG). 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.

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

Sharpe Ratios by Period

	SPXB	USIG	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	—	1.01	—
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.12	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.40	—
Sharpe Ratio (All Time) Calculated using the full available price history	—	0.53	—

Correlation

The correlation between SPXB and USIG is 0.79, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.

Dividends

SPXB vs. USIG - Dividend Comparison

SPXB has not paid dividends to shareholders, while USIG's dividend yield for the trailing twelve months is around 4.68%.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
SPXB ProShares S&P 500 Bond ETF	0.00%	0.00%	1.22%	4.04%	3.14%	2.00%	2.64%	3.48%	2.52%	0.00%	0.00%	0.00%
USIG iShares Broad USD Investment Grade Corporate Bond ETF	4.68%	4.62%	4.51%	3.94%	3.14%	2.33%	2.82%	3.37%	3.44%	3.03%	2.87%	3.24%

Drawdowns

Drawdown Indicators

	SPXB	USIG	Difference
Max Drawdown Largest peak-to-trough decline	—	-22.21%	—
Max Drawdown (1Y) Largest decline over 1 year	—	-2.79%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-21.45%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-21.45%	—
Current Drawdown Current decline from peak	—	-1.80%	—
Average Drawdown Average peak-to-trough decline	—	-3.44%	—
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.90%	—

Volatility

Volatility by Period

	SPXB	USIG	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	2.10%	—
Volatility (6M) Calculated over the trailing 6-month period	—	2.89%	—
Volatility (1Y) Calculated over the trailing 1-year period	—	5.05%	—
Volatility (5Y) Calculated over the trailing 5-year period, annualized	—	6.83%	—
Volatility (10Y) Calculated over the trailing 10-year period, annualized	—	6.82%	—