RFIX vs. DUKZ

Last updated Aug 2, 2026

RFIX (Simplify Bond Bull ETF) and DUKZ (Ocean Park Diversified Income ETF) are both Nontraditional Bonds funds. Both are actively managed. Over the past year, RFIX returned -15.77% vs 4.58% for DUKZ. Their 0.40 correlation means their historical movements had little consistent relationship. RFIX charges 0.50%/yr vs 1.03%/yr for DUKZ.

Performance

RFIX vs. DUKZ - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Simplify Bond Bull ETF (RFIX) and Ocean Park Diversified Income ETF (DUKZ). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, RFIX achieves a 4.85% return, which is significantly higher than DUKZ's 1.38% return.

RFIX

• 1D: 0.12%
• 1M: -2.47%
• 6M: 5.09%
• YTD: 4.85%
• 1Y: -15.77%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: -22.51%

DUKZ

• 1D: -0.03%
• 1M: -1.10%
• 6M: 0.43%
• YTD: 1.38%
• 1Y: 4.58%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 4.00%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
DUKZ Ocean Park Diversified Income ETF	$214.45K	$470.33K	$592.18K
RFIX Simplify Bond Bull ETF	$6.74M	$8.71M	$16.93M

RFIX vs. DUKZ - Yearly Performance Comparison

	2026 (YTD)	2025	2024
RFIX Simplify Bond Bull ETF	4.85%	-28.43%	-12.22%
DUKZ Ocean Park Diversified Income ETF	1.38%	4.24%	-1.52%

Correlation

The correlation between RFIX and DUKZ is 0.29, which is low. Their historical price movements had little consistent relationship.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.29
Correlation (All Time) Calculated using the full available price history since Dec 10, 2024	0.40

The correlation between RFIX and DUKZ shifts across timeframes, from 0.29 (1 year) to 0.40 (all time), reflecting how their relationship changes across market environments.

Return for Risk

RFIX vs. DUKZ — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

RFIX

RFIX Risk / Return Rank: 4
RFIX Sharpe Ratio Rank: 5
RFIX Sortino Ratio Rank: 5
RFIX Omega Ratio Rank: 5
RFIX Calmar Ratio Rank: 4
RFIX Martin Ratio Rank: 3

DUKZ

DUKZ Risk / Return Rank: 40
DUKZ Sharpe Ratio Rank: 41
DUKZ Sortino Ratio Rank: 38
DUKZ Omega Ratio Rank: 40
DUKZ Calmar Ratio Rank: 39
DUKZ Martin Ratio Rank: 43

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

RFIX vs. DUKZ - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Simplify Bond Bull ETF (RFIX) and Ocean Park Diversified Income ETF (DUKZ). 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.

	RFIX	DUKZ	Difference
Sharpe ratio: Return per unit of total volatility	-0.50	1.03	-1.53
Sortino ratio: Return per unit of downside risk	-0.55	1.45	-2.00
Omega ratio: Gain probability vs. loss probability	0.94	1.19	-0.25
Calmar ratio: Return relative to maximum drawdown	-0.68	1.40	-2.08
Martin ratio: Return relative to average drawdown	-1.20	4.72	-5.92

RFIX vs. DUKZ - Sharpe Ratio Comparison

The current RFIX Sharpe Ratio is -0.50, which is lower than the DUKZ Sharpe Ratio of 1.03. The chart below compares the historical Sharpe Ratios of RFIX and DUKZ, 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

RFIX vs. DUKZ - Drawdown Comparison

The maximum RFIX drawdown since its inception was -38.79%, which is greater than DUKZ's maximum drawdown of -4.70%. Use the drawdown chart below to compare losses from any high point for RFIX and DUKZ.

Drawdown Indicators

	RFIX	DUKZ	Difference
Max Drawdown Largest peak-to-trough decline	-38.79%	-4.70%	-34.09%
Max Drawdown (1Y) Largest decline over 1 year	-21.63%	-3.39%	-18.24%
Current Drawdown Current decline from peak	-34.21%	-1.75%	-32.46%
Average Drawdown Average peak-to-trough decline	-24.89%	-1.12%	-23.77%
Ulcer Index Depth and duration of drawdowns from previous peaks	12.18%	1.01%	+11.17%

Volatility

RFIX vs. DUKZ - Volatility Comparison

Simplify Bond Bull ETF (RFIX) has a higher volatility of 6.23% compared to Ocean Park Diversified Income ETF (DUKZ) at 0.95%. This indicates that RFIX's price experiences larger fluctuations and is considered to be riskier than DUKZ based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RFIX	DUKZ	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.23%	0.95%	+5.28%
Volatility (6M) Calculated over the trailing 6-month period	20.46%	4.07%	+16.39%
Volatility (1Y) Calculated over the trailing 1-year period	29.41%	4.62%	+24.79%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	30.63%	4.38%	+26.25%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	30.63%	4.38%	+26.25%

RFIX vs. DUKZ - Expense Ratio Comparison

RFIX has a 0.50% expense ratio, which is lower than DUKZ's 1.03% expense ratio.

Dividends

RFIX vs. DUKZ - Dividend Comparison

RFIX's dividend yield for the trailing twelve months is around 4.36%, more than DUKZ's 3.91% yield.

Position	TTM	2025	2024
DUKZ Ocean Park Diversified Income ETF	3.91%	4.05%	2.44%
RFIX Simplify Bond Bull ETF	4.36%	5.07%	0.00%

Frequently Asked Questions

Can I hold both RFIX and DUKZ in my portfolio?

RFIX and DUKZ have a correlation of 0.29, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, RFIX or DUKZ?

RFIX has higher volatility (6.23%) compared to DUKZ (0.95%). In terms of maximum drawdown, RFIX dropped -38.79% vs DUKZ's -4.70%.

Which ETF is better, RFIX or DUKZ?

On 1-year performance, DUKZ leads with 4.58% vs -15.77% for RFIX. On fees, RFIX is cheaper at 0.50% per year. On volatility, DUKZ has been the lower-risk option at 0.95%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, RFIX or DUKZ?

Over the 1-year period, DUKZ has performed better with a 4.58% return vs -15.77%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, RFIX or DUKZ?

RFIX is cheaper with a 0.50% expense ratio, compared with 1.03% for DUKZ.

Which ETF pays a higher dividend yield, RFIX or DUKZ?

RFIX has the higher dividend yield at 4.36%, compared with 3.91% for DUKZ.

What is the main difference between RFIX and DUKZ?

They also come from different issuers: Simplify and Ocean Park. Their fees differ too: 0.50% for RFIX and 1.03% for DUKZ.

Which has better risk-adjusted returns?

DUKZ currently has the higher Sharpe Ratio (1.03 vs -0.50), 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.