TSPX vs. DDX

Last updated Jun 23, 2026

TSPX (Twin Oak Active Opportunities ETF) and DDX (Defined Duration 10 ETF) are both Diversified Portfolio funds. Both are actively managed. Over the past year, TSPX returned 20.22% vs 13.11% for DDX. A 0.66 correlation means they provide meaningful diversification when combined. TSPX charges 1.01%/yr vs 0.25%/yr for DDX.

Performance

TSPX vs. DDX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Twin Oak Active Opportunities ETF (TSPX) and Defined Duration 10 ETF (DDX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, TSPX achieves a 7.28% return, which is significantly higher than DDX's 5.64% return.

TSPX

• 1D: -0.36%
• 1M: 0.06%
• YTD: 7.28%
• 6M: 7.29%
• 1Y: 20.22%
• 3Y*: —
• 5Y*: —
• 10Y*: —

DDX

• 1D: 0.26%
• 1M: 1.65%
• YTD: 5.64%
• 6M: 5.82%
• 1Y: 13.11%
• 3Y*: 8.43%
• 5Y*: —
• 10Y*: —

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

TSPX vs. DDX - Yearly Performance Comparison

	2026 (YTD)	2025
TSPX Twin Oak Active Opportunities ETF	7.28%	15.46%
DDX Defined Duration 10 ETF	5.64%	8.98%

Correlation

The correlation between TSPX and DDX is 0.70, 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	0.70
Correlation (All Time) Calculated using the full available price history since Feb 21, 2025	0.66

The correlation between TSPX and DDX has been stable across timeframes, ranging from 0.66 to 0.70 - a consistent structural relationship.

Return for Risk

TSPX vs. DDX — Risk / Return Rank

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

TSPX

TSPX Risk / Return Rank: 67
TSPX Sharpe Ratio Rank: 67
TSPX Sortino Ratio Rank: 66
TSPX Omega Ratio Rank: 68
TSPX Calmar Ratio Rank: 62
TSPX Martin Ratio Rank: 74

DDX

DDX Risk / Return Rank: 73
DDX Sharpe Ratio Rank: 76
DDX Sortino Ratio Rank: 82
DDX Omega Ratio Rank: 79
DDX Calmar Ratio Rank: 62
DDX Martin Ratio Rank: 67

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.

TSPX vs. DDX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Twin Oak Active Opportunities ETF (TSPX) and Defined Duration 10 ETF (DDX). 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.

	TSPX	DDX	Difference
Sharpe ratio: Return per unit of total volatility	2.13	2.34	-0.22
Sortino ratio: Return per unit of downside risk	2.94	3.46	-0.52
Omega ratio: Gain probability vs. loss probability	1.39	1.45	-0.06
Calmar ratio: Return relative to maximum drawdown	2.98	2.99	0.00
Martin ratio: Return relative to average drawdown	13.44	11.92	+1.52

TSPX vs. DDX - Sharpe Ratio Comparison

The current TSPX Sharpe Ratio is 2.13, which is comparable to the DDX Sharpe Ratio of 2.34. The chart below compares the historical Sharpe Ratios of TSPX and DDX, 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

TSPX vs. DDX - Drawdown Comparison

The maximum TSPX drawdown since its inception was -7.80%, smaller than the maximum DDX drawdown of -21.27%. Use the drawdown chart below to compare losses from any high point for TSPX and DDX.

Drawdown Indicators

	TSPX	DDX	Difference
Max Drawdown Largest peak-to-trough decline	-7.80%	-21.27%	+13.47%
Max Drawdown (1Y) Largest decline over 1 year	-6.81%	-4.41%	-2.40%
Max Drawdown (3Y) Largest decline over 3 years	—	-6.17%	—
Current Drawdown Current decline from peak	-1.37%	0.00%	-1.37%
Average Drawdown Average peak-to-trough decline	-1.20%	-7.05%	+5.85%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.51%	1.10%	+0.41%

Volatility

TSPX vs. DDX - Volatility Comparison

Twin Oak Active Opportunities ETF (TSPX) has a higher volatility of 3.47% compared to Defined Duration 10 ETF (DDX) at 1.76%. This indicates that TSPX's price experiences larger fluctuations and is considered to be riskier than DDX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	TSPX	DDX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.47%	1.76%	+1.71%
Volatility (6M) Calculated over the trailing 6-month period	7.67%	4.66%	+3.01%
Volatility (1Y) Calculated over the trailing 1-year period	9.57%	5.62%	+3.95%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	10.96%	7.47%	+3.49%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	10.96%	7.47%	+3.49%

TSPX vs. DDX - Expense Ratio Comparison

TSPX has a 1.01% expense ratio, which is higher than DDX's 0.25% expense ratio.

Dividends

TSPX vs. DDX - Dividend Comparison

TSPX's dividend yield for the trailing twelve months is around 2.00%, less than DDX's 3.37% yield.

Position	TTM	2025	2024	2023	2022	2021
DDX Defined Duration 10 ETF	3.37%	3.17%	3.11%	2.41%	1.38%	1.14%
TSPX Twin Oak Active Opportunities ETF	2.00%	2.15%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both TSPX and DDX in my portfolio?

TSPX and DDX have a correlation of 0.70, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, TSPX or DDX?

TSPX has higher volatility (3.47%) compared to DDX (1.76%). In terms of maximum drawdown, TSPX dropped -7.80% vs DDX's -21.27%.

Which ETF is better, TSPX or DDX?

On 1-year performance, TSPX leads with 20.22% vs 13.11% for DDX. On fees, DDX is cheaper at 0.25% per year. On volatility, DDX has been the lower-risk option at 1.76%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, TSPX or DDX?

Over the 1-year period, TSPX has performed better with a 20.22% return vs 13.11%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, TSPX or DDX?

DDX is cheaper with a 0.25% expense ratio, compared with 1.01% for TSPX.

Which ETF pays a higher dividend yield, TSPX or DDX?

DDX has the higher dividend yield at 3.37%, compared with 2.00% for TSPX.

What is the main difference between TSPX and DDX?

They also come from different issuers: Twin Oak and Discipline Funds. Their fees differ too: 1.01% for TSPX and 0.25% for DDX.

Which has better risk-adjusted returns?

DDX currently has the higher Sharpe Ratio (2.34 vs 2.13), 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.