SPXB vs. FLDR

Last updated Jun 4, 2026

SPXB (ProShares S&P 500 Bond ETF) and FLDR (Fidelity Low Duration Bond Factor ETF) are both Corporate Bonds funds - SPXB tracks the S&P 500 MarketAxess Investment Grade Corporate Bond Index while FLDR tracks the Fidelity Low Duration Investment Grade Factor Index. Both are passively managed. At a 0.35 correlation, their price movements are largely independent. Both charge a 0.15% expense ratio.

Performance

SPXB vs. FLDR - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in ProShares S&P 500 Bond ETF (SPXB) and Fidelity Low Duration Bond Factor ETF (FLDR). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

SPXB

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

FLDR

• 1D: -0.02%
• 1M: 0.41%
• YTD: 1.44%
• 6M: 1.76%
• 1Y: 4.76%
• 3Y*: 5.36%
• 5Y*: 3.70%
• 10Y*: —

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

SPXB vs. FLDR - 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%	0.58%
FLDR Fidelity Low Duration Bond Factor ETF	1.44%	5.41%	5.71%	6.32%	-0.33%	-0.18%	2.01%	4.52%	0.94%

Correlation

The correlation between SPXB and FLDR is 0.35, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (3Y) Calculated over the trailing 3-year period	0.36
Correlation (5Y) Calculated over the trailing 5-year period	0.41
Correlation (All Time) Calculated using the full available price history since Jun 15, 2018	0.35

Return for Risk

SPXB vs. FLDR — Risk / Return Rank

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

FLDR

FLDR Risk / Return Rank: 98
FLDR Sharpe Ratio Rank: 98
FLDR Sortino Ratio Rank: 99
FLDR Omega Ratio Rank: 99
FLDR Calmar Ratio Rank: 96
FLDR Martin Ratio Rank: 98

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. FLDR - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for ProShares S&P 500 Bond ETF (SPXB) and Fidelity Low Duration Bond Factor ETF (FLDR). 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	FLDR	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	—	5.95	—
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	3.07	—
Sharpe Ratio (All Time) Calculated using the full available price history	—	0.62	—

Drawdowns

Drawdown Indicators

	SPXB	FLDR	Difference
Max Drawdown Largest peak-to-trough decline	—	-12.23%	—
Max Drawdown (1Y) Largest decline over 1 year	—	-0.47%	—
Max Drawdown (3Y) Largest decline over 3 years	—	-0.76%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-2.33%	—
Current Drawdown Current decline from peak	—	-0.02%	—
Average Drawdown Average peak-to-trough decline	—	-0.35%	—
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.07%	—

Volatility

Volatility by Period

	SPXB	FLDR	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	0.19%	—
Volatility (6M) Calculated over the trailing 6-month period	—	0.58%	—
Volatility (1Y) Calculated over the trailing 1-year period	—	0.80%	—
Volatility (5Y) Calculated over the trailing 5-year period, annualized	—	1.21%	—
Volatility (10Y) Calculated over the trailing 10-year period, annualized	—	5.26%	—

SPXB vs. FLDR - Expense Ratio Comparison

Both SPXB and FLDR have an expense ratio of 0.15%, making them cost-effective options compared to the broader market, where average expense ratios typically range from 0.3% to 0.9%.

Dividends

SPXB vs. FLDR - Dividend Comparison

SPXB has not paid dividends to shareholders, while FLDR's dividend yield for the trailing twelve months is around 4.43%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018
FLDR Fidelity Low Duration Bond Factor ETF	4.43%	4.66%	5.50%	5.28%	2.09%	0.51%	1.22%	2.69%	1.38%
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%

Frequently Asked Questions

Can I hold both SPXB and FLDR in my portfolio?

SPXB and FLDR have a correlation of 0.35, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, SPXB or FLDR?

Both ETFs have the same 0.15% expense ratio. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, SPXB or FLDR?

SPXB and FLDR have the same expense ratio: 0.15% per year.

Which ETF pays a higher dividend yield, SPXB or FLDR?

FLDR has the higher dividend yield at 4.43%, compared with 0.00% for SPXB.

What is the main difference between SPXB and FLDR?

SPXB tracks S&P 500 MarketAxess Investment Grade Corporate Bond Index, while FLDR tracks Fidelity Low Duration Investment Grade Factor Index. They also come from different issuers: ProShares and Fidelity.