GSY vs. CDX

Last updated Jun 14, 2026

GSY (Invesco Ultra Short Duration ETF) and CDX (Simplify High Yield PLUS Credit Hedge ETF) are both exchange-traded funds - GSY is a Ultrashort Bond fund actively managed by Invesco, while CDX is a High Yield Bonds fund actively managed by Simplify. Both are actively managed. Over the past 3 years, GSY returned 5.48%/yr vs 7.84%/yr for CDX. At a 0.24 correlation, their price movements are largely independent. GSY charges 0.22%/yr vs 0.26%/yr for CDX.

Performance

GSY vs. CDX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Invesco Ultra Short Duration ETF (GSY) and Simplify High Yield PLUS Credit Hedge ETF (CDX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, GSY achieves a 1.72% return, which is significantly higher than CDX's -1.56% return.

GSY

• 1D: 0.00%
• 1M: 0.36%
• YTD: 1.72%
• 6M: 1.96%
• 1Y: 4.49%
• 3Y*: 5.48%
• 5Y*: 3.68%
• 10Y*: 2.86%

CDX

• 1D: -0.09%
• 1M: 0.33%
• YTD: -1.56%
• 6M: -1.47%
• 1Y: -0.54%
• 3Y*: 7.84%
• 5Y*: —
• 10Y*: —

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

GSY vs. CDX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022
GSY Invesco Ultra Short Duration ETF	1.72%	4.96%	5.95%	5.99%	0.49%
CDX Simplify High Yield PLUS Credit Hedge ETF	-1.56%	9.51%	7.71%	12.74%	-8.26%

Correlation

The correlation between GSY and CDX is 0.29, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.29
Correlation (3Y) Calculated over the trailing 3-year period	0.23
Correlation (All Time) Calculated using the full available price history since Feb 15, 2022	0.24

Return for Risk

GSY vs. CDX — Risk / Return Rank

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

GSY

GSY Risk / Return Rank: 99
GSY Sharpe Ratio Rank: 100
GSY Sortino Ratio Rank: 99
GSY Omega Ratio Rank: 99
GSY Calmar Ratio Rank: 100
GSY Martin Ratio Rank: 100

CDX

CDX Risk / Return Rank: 8
CDX Sharpe Ratio Rank: 8
CDX Sortino Ratio Rank: 7
CDX Omega Ratio Rank: 7
CDX Calmar Ratio Rank: 8
CDX Martin Ratio Rank: 8

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.

GSY vs. CDX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Invesco Ultra Short Duration ETF (GSY) and Simplify High Yield PLUS Credit Hedge ETF (CDX). 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.

	GSY	CDX	Difference
Sharpe ratio: Return per unit of total volatility	11.20	-0.12	+11.32
Sortino ratio: Return per unit of downside risk	27.35	-0.14	+27.48
Omega ratio: Gain probability vs. loss probability	6.54	0.98	+5.55
Calmar ratio: Return relative to maximum drawdown	75.72	-0.17	+75.89
Martin ratio: Return relative to average drawdown	373.96	-0.39	+374.34

GSY vs. CDX - Sharpe Ratio Comparison

The current GSY Sharpe Ratio is 11.20, which is higher than the CDX Sharpe Ratio of -0.12. The chart below compares the historical Sharpe Ratios of GSY and CDX, 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

GSY vs. CDX - Drawdown Comparison

The maximum GSY drawdown since its inception was -12.14%, smaller than the maximum CDX drawdown of -13.24%. Use the drawdown chart below to compare losses from any high point for GSY and CDX.

Drawdown Indicators

	GSY	CDX	Difference
Max Drawdown Largest peak-to-trough decline	-12.14%	-13.24%	+1.10%
Max Drawdown (1Y) Largest decline over 1 year	-0.06%	-4.18%	+4.12%
Max Drawdown (3Y) Largest decline over 3 years	-0.18%	-8.88%	+8.70%
Max Drawdown (5Y) Largest decline over 5 years	-1.48%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-5.25%	—	—
Current Drawdown Current decline from peak	0.00%	-6.57%	+6.57%
Average Drawdown Average peak-to-trough decline	-2.38%	-4.35%	+1.97%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.01%	1.85%	-1.84%

Volatility

GSY vs. CDX - Volatility Comparison

The current volatility for Invesco Ultra Short Duration ETF (GSY) is 0.15%, while Simplify High Yield PLUS Credit Hedge ETF (CDX) has a volatility of 1.73%. This indicates that GSY experiences smaller price fluctuations and is considered to be less risky than CDX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	GSY	CDX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.15%	1.73%	-1.58%
Volatility (6M) Calculated over the trailing 6-month period	0.31%	4.81%	-4.50%
Volatility (1Y) Calculated over the trailing 1-year period	0.40%	5.80%	-5.40%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	0.58%	11.08%	-10.50%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	1.22%	11.08%	-9.86%

GSY vs. CDX - Expense Ratio Comparison

GSY has a 0.22% expense ratio, which is lower than CDX's 0.26% 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

GSY vs. CDX - Dividend Comparison

GSY's dividend yield for the trailing twelve months is around 4.34%, less than CDX's 8.29% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
CDX Simplify High Yield PLUS Credit Hedge ETF	8.29%	7.18%	12.60%	5.26%	7.51%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
GSY Invesco Ultra Short Duration ETF	4.34%	4.56%	5.31%	4.95%	1.70%	0.58%	1.45%	2.71%	2.30%	1.80%	1.21%	1.17%

Frequently Asked Questions

Can I hold both GSY and CDX in my portfolio?

GSY and CDX 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, GSY or CDX?

CDX has higher volatility (1.73%) compared to GSY (0.15%). In terms of maximum drawdown, GSY dropped -12.14% vs CDX's -13.24%.

Which ETF is better, GSY or CDX?

On 3-year performance, CDX leads with 7.84% vs 5.48% for GSY. On fees, GSY is cheaper at 0.22% per year. On volatility, GSY has been the lower-risk option at 0.15%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, GSY or CDX?

Over the 3-year period, CDX has performed better with a 7.84% return vs 5.48%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, GSY or CDX?

GSY is cheaper with a 0.22% expense ratio, compared with 0.26% for CDX.

Which ETF pays a higher dividend yield, GSY or CDX?

CDX has the higher dividend yield at 8.29%, compared with 4.34% for GSY.

What is the main difference between GSY and CDX?

GSY is categorized as Ultrashort Bond, while CDX is High Yield Bonds. They also come from different issuers: Invesco and Simplify. Their fees differ too: 0.22% for GSY and 0.26% for CDX.

Which has better risk-adjusted returns?

GSY currently has the higher Sharpe Ratio (11.20 vs -0.12), 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.