VSDB vs. FLDR

Last updated Jun 23, 2026

VSDB (Vanguard Short Duration Bond ETF Shares) and FLDR (Fidelity Low Duration Bond Factor ETF) are both Short-Term Bond funds. VSDB is actively managed, while FLDR is passively managed. Over the past year, VSDB returned 4.75% vs 4.64% for FLDR. A 0.63 correlation means they provide meaningful diversification when combined. Both charge a 0.15% expense ratio.

Performance

VSDB vs. FLDR - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard Short Duration Bond ETF Shares (VSDB) and Fidelity Low Duration Bond Factor ETF (FLDR). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, VSDB achieves a 0.95% return, which is significantly lower than FLDR's 1.62% return.

VSDB

• 1D: -0.11%
• 1M: 0.30%
• YTD: 0.95%
• 6M: 1.15%
• 1Y: 4.75%
• 3Y*: —
• 5Y*: —
• 10Y*: —

FLDR

• 1D: -0.02%
• 1M: 0.39%
• YTD: 1.62%
• 6M: 1.79%
• 1Y: 4.64%
• 3Y*: 5.30%
• 5Y*: 3.71%
• 10Y*: —

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

VSDB vs. FLDR - Yearly Performance Comparison

	2026 (YTD)	2025
VSDB Vanguard Short Duration Bond ETF Shares	0.95%	4.88%
FLDR Fidelity Low Duration Bond Factor ETF	1.62%	3.73%

Correlation

The correlation between VSDB and FLDR is 0.61, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.61
Correlation (All Time) Calculated using the full available price history since Apr 3, 2025	0.63

The correlation between VSDB and FLDR has been stable across timeframes, ranging from 0.61 to 0.63 - a consistent structural relationship.

Return for Risk

VSDB vs. FLDR — Risk / Return Rank

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

VSDB

VSDB Risk / Return Rank: 83
VSDB Sharpe Ratio Rank: 88
VSDB Sortino Ratio Rank: 92
VSDB Omega Ratio Rank: 91
VSDB Calmar Ratio Rank: 69
VSDB Martin Ratio Rank: 78

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: 97
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.

VSDB vs. FLDR - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Short Duration Bond ETF Shares (VSDB) 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.

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.

	VSDB	FLDR	Difference
Sharpe ratio: Return per unit of total volatility	2.74	5.75	-3.01
Sortino ratio: Return per unit of downside risk	4.25	9.69	-5.44
Omega ratio: Gain probability vs. loss probability	1.56	2.65	-1.09
Calmar ratio: Return relative to maximum drawdown	3.35	9.97	-6.61
Martin ratio: Return relative to average drawdown	14.67	67.93	-53.26

VSDB vs. FLDR - Sharpe Ratio Comparison

The current VSDB Sharpe Ratio is 2.74, which is lower than the FLDR Sharpe Ratio of 5.75. The chart below compares the historical Sharpe Ratios of VSDB and FLDR, 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

VSDB vs. FLDR - Drawdown Comparison

The maximum VSDB drawdown since its inception was -1.42%, smaller than the maximum FLDR drawdown of -12.23%. Use the drawdown chart below to compare losses from any high point for VSDB and FLDR.

Drawdown Indicators

	VSDB	FLDR	Difference
Max Drawdown Largest peak-to-trough decline	-1.42%	-12.23%	+10.81%
Max Drawdown (1Y) Largest decline over 1 year	-1.42%	-0.47%	-0.95%
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	-0.26%	-0.04%	-0.22%
Average Drawdown Average peak-to-trough decline	-0.19%	-0.35%	+0.16%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.32%	0.07%	+0.25%

Volatility

VSDB vs. FLDR - Volatility Comparison

Vanguard Short Duration Bond ETF Shares (VSDB) has a higher volatility of 0.52% compared to Fidelity Low Duration Bond Factor ETF (FLDR) at 0.18%. This indicates that VSDB's price experiences larger fluctuations and is considered to be riskier than FLDR based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VSDB	FLDR	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.52%	0.18%	+0.34%
Volatility (6M) Calculated over the trailing 6-month period	1.39%	0.60%	+0.79%
Volatility (1Y) Calculated over the trailing 1-year period	1.75%	0.81%	+0.94%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	1.90%	1.21%	+0.69%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	1.90%	5.25%	-3.35%

VSDB vs. FLDR - Expense Ratio Comparison

Both VSDB 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

VSDB vs. FLDR - Dividend Comparison

VSDB's dividend yield for the trailing twelve months is around 4.16%, less than FLDR's 4.42% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018
FLDR Fidelity Low Duration Bond Factor ETF	4.42%	4.66%	5.50%	5.28%	2.09%	0.51%	1.22%	2.69%	1.38%
VSDB Vanguard Short Duration Bond ETF Shares	4.16%	3.30%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both VSDB and FLDR in my portfolio?

VSDB and FLDR have a correlation of 0.61, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, VSDB or FLDR?

VSDB has higher volatility (0.52%) compared to FLDR (0.18%). In terms of maximum drawdown, VSDB dropped -1.42% vs FLDR's -12.23%.

Which ETF is better, VSDB or FLDR?

On 1-year performance, VSDB leads with 4.75% vs 4.64% for FLDR. Both ETFs have the same 0.15% expense ratio. On volatility, FLDR has been the lower-risk option at 0.18%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, VSDB or FLDR?

Over the 1-year period, VSDB has performed better with a 4.75% return vs 4.64%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, VSDB or FLDR?

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

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

FLDR has the higher dividend yield at 4.42%, compared with 4.16% for VSDB.

What is the main difference between VSDB and FLDR?

They also come from different issuers: Vanguard and Fidelity.

Which has better risk-adjusted returns?

FLDR currently has the higher Sharpe Ratio (5.75 vs 2.74), 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.