BBSU.L vs. FLXK.L

Last updated Jul 18, 2026

BBSU.L (JPMorgan BetaBuilders US Equity UCITS ETF (Acc)) and FLXK.L (Franklin FTSE Korea UCITS ETF USD (Acc)) are both exchange-traded funds - BBSU.L is a Large Cap Blend Equities fund tracking the Russell 1000 TR USD, while FLXK.L is a South Korea Equities fund tracking the FTSE Korea 30/18 Capped Index (Net Return). Both are passively managed. Over the past 5 years, BBSU.L returned 12.85%/yr vs 15.73%/yr for FLXK.L. At a 0.50 correlation, their price movements are largely independent. BBSU.L charges 0.05%/yr vs 0.09%/yr for FLXK.L.

Performance

BBSU.L vs. FLXK.L - Performance Comparison

The chart below illustrates the hypothetical performance of a £10,000 investment in JPMorgan BetaBuilders US Equity UCITS ETF (Acc) (BBSU.L) and Franklin FTSE Korea UCITS ETF USD (Acc) (FLXK.L). The values are adjusted to include any dividend payments, if applicable.

Different Trading Currencies

BBSU.L is traded in GBp, while FLXK.L is traded in USD. To make them comparable, the FLXK.L values have been converted to GBp using the latest available exchange rates.

Returns By Period

In the year-to-date period, BBSU.L achieves a 8.74% return, which is significantly lower than FLXK.L's 72.16% return.

BBSU.L

• 1D: -0.93%
• 1M: -0.85%
• 6M: 7.25%
• YTD: 8.74%
• 1Y: 18.97%
• 3Y*: 18.22%
• 5Y*: 12.85%
• 10Y*: —

FLXK.L

• 1D: -1.88%
• 1M: -23.34%
• 6M: 49.24%
• YTD: 72.16%
• 1Y: 136.47%
• 3Y*: 37.03%
• 5Y*: 15.73%
• 10Y*: —

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

BBSU.L vs. FLXK.L - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019
BBSU.L JPMorgan BetaBuilders US Equity UCITS ETF (Acc)	8.74%	9.39%	27.19%	20.71%	-10.46%	29.25%	16.07%	12.69%
FLXK.L Franklin FTSE Korea UCITS ETF USD (Acc)	72.16%	80.91%	-20.26%	14.73%	-19.45%	-5.96%	42.98%	8.49%

Correlation

The correlation between BBSU.L and FLXK.L is 0.47, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.47
Correlation (3Y) Calculated over the trailing 3-year period	0.47
Correlation (5Y) Calculated over the trailing 5-year period	0.47
Correlation (All Time) Calculated using the full available price history since Jun 4, 2019	0.50

Return for Risk

BBSU.L vs. FLXK.L — Risk / Return Rank

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

BBSU.L

BBSU.L Risk / Return Rank: 65
BBSU.L Sharpe Ratio Rank: 68
BBSU.L Sortino Ratio Rank: 65
BBSU.L Omega Ratio Rank: 68
BBSU.L Calmar Ratio Rank: 63
BBSU.L Martin Ratio Rank: 61

FLXK.L

FLXK.L Risk / Return Rank: 92
FLXK.L Sharpe Ratio Rank: 96
FLXK.L Sortino Ratio Rank: 89
FLXK.L Omega Ratio Rank: 91
FLXK.L Calmar Ratio Rank: 94
FLXK.L Martin Ratio Rank: 93

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.

BBSU.L vs. FLXK.L - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for JPMorgan BetaBuilders US Equity UCITS ETF (Acc) (BBSU.L) and Franklin FTSE Korea UCITS ETF USD (Acc) (FLXK.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.

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.

	BBSU.L	FLXK.L	Difference
Sharpe ratio: Return per unit of total volatility	1.70	3.09	-1.38
Sortino ratio: Return per unit of downside risk	2.34	3.26	-0.93
Omega ratio: Gain probability vs. loss probability	1.31	1.46	-0.15
Calmar ratio: Return relative to maximum drawdown	2.42	5.03	-2.60
Martin ratio: Return relative to average drawdown	8.25	17.21	-8.96

BBSU.L vs. FLXK.L - Sharpe Ratio Comparison

The current BBSU.L Sharpe Ratio is 1.70, which is lower than the FLXK.L Sharpe Ratio of 3.09. The chart below compares the historical Sharpe Ratios of BBSU.L and FLXK.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.

Drawdowns

BBSU.L vs. FLXK.L - Drawdown Comparison

The maximum BBSU.L drawdown since its inception was -25.80%, smaller than the maximum FLXK.L drawdown of -41.70%. Use the drawdown chart below to compare losses from any high point for BBSU.L and FLXK.L.

Drawdown Indicators

	BBSU.L	FLXK.L	Difference
Max Drawdown Largest peak-to-trough decline	-25.80%	-41.70%	+15.90%
Max Drawdown (1Y) Largest decline over 1 year	-7.80%	-26.99%	+19.19%
Max Drawdown (3Y) Largest decline over 3 years	-21.42%	-28.10%	+6.68%
Max Drawdown (5Y) Largest decline over 5 years	-21.42%	-37.31%	+15.89%
Current Drawdown Current decline from peak	-1.94%	-26.99%	+25.05%
Average Drawdown Average peak-to-trough decline	-3.68%	-17.72%	+14.04%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.29%	7.90%	-5.61%

Volatility

BBSU.L vs. FLXK.L - Volatility Comparison

The current volatility for JPMorgan BetaBuilders US Equity UCITS ETF (Acc) (BBSU.L) is 3.22%, while Franklin FTSE Korea UCITS ETF USD (Acc) (FLXK.L) has a volatility of 18.55%. This indicates that BBSU.L experiences smaller price fluctuations and is considered to be less risky than FLXK.L based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BBSU.L	FLXK.L	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.22%	18.55%	-15.33%
Volatility (6M) Calculated over the trailing 6-month period	7.98%	40.42%	-32.44%
Volatility (1Y) Calculated over the trailing 1-year period	11.15%	43.95%	-32.80%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	14.55%	27.96%	-13.41%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	16.05%	28.13%	-12.08%

BBSU.L vs. FLXK.L - Expense Ratio Comparison

BBSU.L has a 0.05% expense ratio, which is lower than FLXK.L's 0.09% 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%.

Dividends

BBSU.L vs. FLXK.L - Dividend Comparison

Neither BBSU.L nor FLXK.L has paid dividends to shareholders.

Tickers have no history of dividend payments

Frequently Asked Questions

Can I hold both BBSU.L and FLXK.L in my portfolio?

BBSU.L and FLXK.L have a correlation of 0.47, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, BBSU.L or FLXK.L?

On fees, BBSU.L is cheaper at 0.05% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, BBSU.L or FLXK.L?

BBSU.L is cheaper with a 0.05% expense ratio, compared with 0.09% for FLXK.L.

What is the main difference between BBSU.L and FLXK.L?

BBSU.L is categorized as Large Cap Blend Equities, while FLXK.L is South Korea Equities. BBSU.L tracks Russell 1000 TR USD, while FLXK.L tracks FTSE Korea 30/18 Capped Index (Net Return). They also come from different issuers: JPMorgan and Franklin. Their fees differ too: 0.05% for BBSU.L and 0.09% for FLXK.L.