FLO5.L vs. CSP1.L

Last updated Jun 5, 2026

FLO5.L (iShares USD Floating Rate Bond UCITS ETF) and CSP1.L (iShares Core S&P 500 UCITS ETF) are both exchange-traded funds - FLO5.L is a Corporate Bonds fund tracking the Bloomberg US Corp Bond TR USD, while CSP1.L is a S&P 500 fund tracking the S&P 500 Index. Both are passively managed. Over the past 5 years, FLO5.L returned 1.22%/yr vs 14.94%/yr for CSP1.L. At a 0.21 correlation, their price movements are largely independent. FLO5.L charges 0.10%/yr vs 0.07%/yr for CSP1.L.

Performance

FLO5.L vs. CSP1.L - Performance Comparison

The chart below illustrates the hypothetical performance of a £10,000 investment in iShares USD Floating Rate Bond UCITS ETF (FLO5.L) and iShares Core S&P 500 UCITS ETF (CSP1.L). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FLO5.L achieves a -0.05% return, which is significantly lower than CSP1.L's 10.55% return.

FLO5.L

• 1D: 0.03%
• 1M: -0.74%
• YTD: -0.05%
• 6M: -0.55%
• 1Y: 1.25%
• 3Y*: -2.38%
• 5Y*: 1.22%
• 10Y*: —

CSP1.L

• 1D: 0.05%
• 1M: 5.54%
• YTD: 10.55%
• 6M: 10.48%
• 1Y: 29.13%
• 3Y*: 19.02%
• 5Y*: 14.94%
• 10Y*: 16.07%

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

FLO5.L vs. CSP1.L - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FLO5.L iShares USD Floating Rate Bond UCITS ETF	-0.05%	-6.83%	1.88%	-4.56%	11.92%	1.15%	-4.18%	-2.07%	4.95%	0.57%
CSP1.L iShares Core S&P 500 UCITS ETF	10.55%	9.37%	27.35%	19.79%	-9.05%	31.07%	13.65%	26.42%	0.01%	8.98%

Correlation

The correlation between FLO5.L and CSP1.L is 0.16, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.16
Correlation (3Y) Calculated over the trailing 3-year period	0.21
Correlation (5Y) Calculated over the trailing 5-year period	0.12
Correlation (All Time) Calculated using the full available price history since Sep 18, 2017	0.21

Return for Risk

FLO5.L vs. CSP1.L — Risk / Return Rank

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

FLO5.L

FLO5.L Risk / Return Rank: 11
FLO5.L Sharpe Ratio Rank: 12
FLO5.L Sortino Ratio Rank: 10
FLO5.L Omega Ratio Rank: 11
FLO5.L Calmar Ratio Rank: 11
FLO5.L Martin Ratio Rank: 11

CSP1.L

CSP1.L Risk / Return Rank: 82
CSP1.L Sharpe Ratio Rank: 84
CSP1.L Sortino Ratio Rank: 83
CSP1.L Omega Ratio Rank: 85
CSP1.L Calmar Ratio Rank: 80
CSP1.L Martin Ratio Rank: 78

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.

FLO5.L vs. CSP1.L - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares USD Floating Rate Bond UCITS ETF (FLO5.L) and iShares Core S&P 500 UCITS ETF (CSP1.L). 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.

	FLO5.L	CSP1.L	Difference
Sharpe ratio: Return per unit of total volatility	0.17	2.73	-2.56
Sortino ratio: Return per unit of downside risk	0.27	3.66	-3.39
Omega ratio: Gain probability vs. loss probability	1.04	1.51	-0.47
Calmar ratio: Return relative to maximum drawdown	0.19	4.07	-3.88
Martin ratio: Return relative to average drawdown	0.38	14.99	-14.61
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FLO5.L vs. CSP1.L - Sharpe Ratio Comparison

The current FLO5.L Sharpe Ratio is 0.17, which is lower than the CSP1.L Sharpe Ratio of 2.73. The chart below compares the historical Sharpe Ratios of FLO5.L and CSP1.L, 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

	FLO5.L	CSP1.L	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.17	2.73	-2.56
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.13	1.04	-0.91
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	1.03	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.02	1.09	-1.07

Drawdowns

FLO5.L vs. CSP1.L - Drawdown Comparison

The maximum FLO5.L drawdown since its inception was -20.77%, smaller than the maximum CSP1.L drawdown of -25.48%. Use the drawdown chart below to compare losses from any high point for FLO5.L and CSP1.L.

Drawdown Indicators

	FLO5.L	CSP1.L	Difference
Max Drawdown Largest peak-to-trough decline	-20.77%	-25.48%	+4.71%
Max Drawdown (1Y) Largest decline over 1 year	-6.65%	-7.12%	+0.47%
Max Drawdown (3Y) Largest decline over 3 years	-13.32%	-20.77%	+7.45%
Max Drawdown (5Y) Largest decline over 5 years	-20.77%	-20.77%	0.00%
Max Drawdown (10Y) Largest decline over 10 years	—	-25.48%	—
Current Drawdown Current decline from peak	-19.14%	-0.24%	-18.90%
Average Drawdown Average peak-to-trough decline	-9.77%	-3.32%	-6.45%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.30%	1.94%	+1.36%

Volatility

FLO5.L vs. CSP1.L - Volatility Comparison

iShares USD Floating Rate Bond UCITS ETF (FLO5.L) has a higher volatility of 2.80% compared to iShares Core S&P 500 UCITS ETF (CSP1.L) at 2.62%. This indicates that FLO5.L's price experiences larger fluctuations and is considered to be riskier than CSP1.L based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FLO5.L	CSP1.L	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.80%	2.62%	+0.18%
Volatility (6M) Calculated over the trailing 6-month period	5.01%	7.16%	-2.15%
Volatility (1Y) Calculated over the trailing 1-year period	7.27%	10.62%	-3.35%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	9.03%	14.31%	-5.28%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	9.16%	15.57%	-6.41%

FLO5.L vs. CSP1.L - Expense Ratio Comparison

FLO5.L has a 0.10% expense ratio, which is higher than CSP1.L's 0.07% 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%.

Dividends

FLO5.L vs. CSP1.L - Dividend Comparison

FLO5.L's dividend yield for the trailing twelve months is around 0.05%, while CSP1.L has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
CSP1.L iShares Core S&P 500 UCITS ETF	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
FLO5.L iShares USD Floating Rate Bond UCITS ETF	0.05%	0.05%	0.06%	0.06%	0.01%	0.01%	0.02%	0.03%	0.02%	0.00%

Frequently Asked Questions

Can I hold both FLO5.L and CSP1.L in my portfolio?

FLO5.L and CSP1.L have a correlation of 0.16, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, FLO5.L or CSP1.L?

On fees, CSP1.L is cheaper at 0.07% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, FLO5.L or CSP1.L?

CSP1.L is cheaper with a 0.07% expense ratio, compared with 0.10% for FLO5.L.

What is the main difference between FLO5.L and CSP1.L?

FLO5.L is categorized as Corporate Bonds, while CSP1.L is S&P 500. FLO5.L tracks Bloomberg US Corp Bond TR USD, while CSP1.L tracks S&P 500 Index. Their fees differ too: 0.10% for FLO5.L and 0.07% for CSP1.L.