IGSB vs. FLRN

Last updated Apr 1, 2026

Compare and contrast key facts about iShares Short-Term Corporate Bond ETF (IGSB) and SPDR Bloomberg Barclays Investment Grade Floating Rate ETF (FLRN).

IGSB and FLRN are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. IGSB is a passively managed fund by iShares that tracks the performance of the ICE BofAML 1-5 Year US Corporate Index. It was launched on Jan 11, 2007. FLRN is a passively managed fund by State Street that tracks the performance of the Bloomberg US Floating Rate Notes (<5 Y). It was launched on Nov 30, 2011. Both IGSB and FLRN 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

IGSB vs. FLRN - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares Short-Term Corporate Bond ETF (IGSB) and SPDR Bloomberg Barclays Investment Grade Floating Rate ETF (FLRN). The values are adjusted to include any dividend payments, if applicable.

IGSB vs. FLRN - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
IGSB iShares Short-Term Corporate Bond ETF	0.14%	6.96%	4.97%	6.40%	-5.63%	-0.56%	5.37%	7.11%	1.25%	1.27%
FLRN SPDR Bloomberg Barclays Investment Grade Floating Rate ETF	0.84%	5.01%	6.32%	6.54%	1.31%	0.39%	0.77%	4.02%	1.39%	1.81%

Returns By Period

In the year-to-date period, IGSB achieves a 0.14% return, which is significantly lower than FLRN's 0.84% return. Over the past 10 years, IGSB has underperformed FLRN with an annualized return of 2.74%, while FLRN has yielded a comparatively higher 2.99% annualized return.

IGSB

• 1D: 0.27%
• 1M: -0.89%
• YTD: 0.14%
• 6M: 1.38%
• 1Y: 4.98%
• 3Y*: 5.48%
• 5Y*: 2.45%
• 10Y*: 2.74%

FLRN

• 1D: 0.16%
• 1M: 0.13%
• YTD: 0.84%
• 6M: 1.99%
• 1Y: 4.67%
• 3Y*: 5.88%
• 5Y*: 4.00%
• 10Y*: 2.99%

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

IGSB vs. FLRN - Expense Ratio Comparison

IGSB has a 0.06% expense ratio, which is lower than FLRN's 0.15% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

FLRN

SPDR Bloomberg Barclays Investment Grade Floating Rate ETF

IGSB

iShares Short-Term Corporate Bond ETF

Return for Risk

IGSB vs. FLRN — Risk / Return Rank

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

IGSB

IGSB Risk / Return Rank: 94
IGSB Sharpe Ratio Rank: 93
IGSB Sortino Ratio Rank: 96
IGSB Omega Ratio Rank: 95
IGSB Calmar Ratio Rank: 93
IGSB Martin Ratio Rank: 94

FLRN

FLRN Risk / Return Rank: 96
FLRN Sharpe Ratio Rank: 96
FLRN Sortino Ratio Rank: 96
FLRN Omega Ratio Rank: 99
FLRN Calmar Ratio Rank: 92
FLRN 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.

IGSB vs. FLRN - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares Short-Term Corporate Bond ETF (IGSB) and SPDR Bloomberg Barclays Investment Grade Floating Rate ETF (FLRN). 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.

	IGSB	FLRN	Difference
Sharpe ratio Return per unit of total volatility	2.18	2.58	-0.40
Sortino ratio Return per unit of downside risk	3.22	3.22	0.00
Omega ratio Gain probability vs. loss probability	1.45	2.10	-0.65
Calmar ratio Return relative to maximum drawdown	3.46	3.21	+0.24
Martin ratio Return relative to average drawdown	14.27	26.30	-12.03
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

IGSB vs. FLRN - Sharpe Ratio Comparison

The current IGSB Sharpe Ratio is 2.18, which is comparable to the FLRN Sharpe Ratio of 2.58. The chart below compares the historical Sharpe Ratios of IGSB and FLRN, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	IGSB	FLRN	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.18	2.58	-0.40
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.85	2.39	-1.54
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.79	0.71	+0.08
Sharpe Ratio (All Time) Calculated using the full available price history	0.70	0.49	+0.21

Correlation

The correlation between IGSB and FLRN is 0.05, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.

Dividends

IGSB vs. FLRN - Dividend Comparison

IGSB's dividend yield for the trailing twelve months is around 4.51%, less than FLRN's 4.69% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
IGSB iShares Short-Term Corporate Bond ETF	4.51%	4.44%	4.02%	3.26%	2.07%	1.82%	2.36%	3.06%	2.46%	1.65%	1.45%	1.18%
FLRN SPDR Bloomberg Barclays Investment Grade Floating Rate ETF	4.69%	4.89%	5.67%	5.68%	1.95%	0.39%	1.22%	2.76%	2.39%	1.64%	1.06%	0.63%

Drawdowns

IGSB vs. FLRN - Drawdown Comparison

The maximum IGSB drawdown since its inception was -13.38%, smaller than the maximum FLRN drawdown of -14.64%. Use the drawdown chart below to compare losses from any high point for IGSB and FLRN.

Drawdown Indicators

	IGSB	FLRN	Difference
Max Drawdown Largest peak-to-trough decline	-13.38%	-14.64%	+1.26%
Max Drawdown (1Y) Largest decline over 1 year	-1.46%	-1.43%	-0.03%
Max Drawdown (5Y) Largest decline over 5 years	-9.46%	-2.16%	-7.30%
Max Drawdown (10Y) Largest decline over 10 years	-13.38%	-14.64%	+1.26%
Current Drawdown Current decline from peak	-0.89%	0.00%	-0.89%
Average Drawdown Average peak-to-trough decline	-0.85%	-1.85%	+1.00%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.35%	0.17%	+0.18%

Volatility

IGSB vs. FLRN - Volatility Comparison

iShares Short-Term Corporate Bond ETF (IGSB) has a higher volatility of 0.96% compared to SPDR Bloomberg Barclays Investment Grade Floating Rate ETF (FLRN) at 0.37%. This indicates that IGSB's price experiences larger fluctuations and is considered to be riskier than FLRN based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	IGSB	FLRN	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.96%	0.37%	+0.59%
Volatility (6M) Calculated over the trailing 6-month period	1.32%	0.54%	+0.78%
Volatility (1Y) Calculated over the trailing 1-year period	2.29%	1.82%	+0.47%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	2.91%	1.69%	+1.22%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	3.46%	4.21%	-0.75%