PRCS vs. RSSY

Last updated Jun 4, 2026

PRCS (Parnassus Core Select ETF) and RSSY (Return Stacked US Stocks & Futures Yield ETF) are both Large Cap Blend Equities funds. Both are actively managed. Over the past year, PRCS returned 12.71% vs 47.81% for RSSY. A 0.61 correlation means they provide meaningful diversification when combined. PRCS charges 0.58%/yr vs 1.04%/yr for RSSY.

Performance

PRCS vs. RSSY - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Parnassus Core Select ETF (PRCS) and Return Stacked US Stocks & Futures Yield ETF (RSSY). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, PRCS achieves a 2.88% return, which is significantly lower than RSSY's 32.45% return.

PRCS

• 1D: -0.46%
• 1M: 1.15%
• YTD: 2.88%
• 6M: 2.48%
• 1Y: 12.71%
• 3Y*: —
• 5Y*: —
• 10Y*: —

RSSY

• 1D: -0.16%
• 1M: 1.78%
• YTD: 32.45%
• 6M: 27.13%
• 1Y: 47.81%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

PRCS vs. RSSY - Yearly Performance Comparison

	2026 (YTD)	2025	2024
PRCS Parnassus Core Select ETF	2.88%	11.69%	-3.56%
RSSY Return Stacked US Stocks & Futures Yield ETF	32.45%	-3.52%	-2.12%

Correlation

The correlation between PRCS and RSSY is 0.50, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.50
Correlation (All Time) Calculated using the full available price history since Dec 13, 2024	0.61

The correlation between PRCS and RSSY shifts across timeframes, from 0.50 (1 year) to 0.61 (all time), reflecting how their relationship changes across market environments.

Return for Risk

PRCS vs. RSSY — Risk / Return Rank

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

PRCS

PRCS Risk / Return Rank: 27
PRCS Sharpe Ratio Rank: 29
PRCS Sortino Ratio Rank: 28
PRCS Omega Ratio Rank: 28
PRCS Calmar Ratio Rank: 22
PRCS Martin Ratio Rank: 29

RSSY

RSSY Risk / Return Rank: 93
RSSY Sharpe Ratio Rank: 94
RSSY Sortino Ratio Rank: 93
RSSY Omega Ratio Rank: 93
RSSY Calmar Ratio Rank: 92
RSSY Martin Ratio Rank: 91

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.

PRCS vs. RSSY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Parnassus Core Select ETF (PRCS) and Return Stacked US Stocks & Futures Yield ETF (RSSY). 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.

	PRCS	RSSY	Difference
Sharpe ratio: Return per unit of total volatility	1.02	3.63	-2.61
Sortino ratio: Return per unit of downside risk	1.48	4.78	-3.30
Omega ratio: Gain probability vs. loss probability	1.18	1.65	-0.47
Calmar ratio: Return relative to maximum drawdown	1.00	6.53	-5.53
Martin ratio: Return relative to average drawdown	3.94	22.39	-18.45
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

PRCS vs. RSSY - Sharpe Ratio Comparison

The current PRCS Sharpe Ratio is 1.02, which is lower than the RSSY Sharpe Ratio of 3.63. The chart below compares the historical Sharpe Ratios of PRCS and RSSY, 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

	PRCS	RSSY	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.02	3.63	-2.61
Sharpe Ratio (All Time) Calculated using the full available price history	0.43	0.75	-0.31

Drawdowns

PRCS vs. RSSY - Drawdown Comparison

The maximum PRCS drawdown since its inception was -18.20%, smaller than the maximum RSSY drawdown of -29.57%. Use the drawdown chart below to compare losses from any high point for PRCS and RSSY.

Drawdown Indicators

	PRCS	RSSY	Difference
Max Drawdown Largest peak-to-trough decline	-18.20%	-29.57%	+11.37%
Max Drawdown (1Y) Largest decline over 1 year	-12.77%	-7.36%	-5.41%
Current Drawdown Current decline from peak	-0.89%	-0.16%	-0.73%
Average Drawdown Average peak-to-trough decline	-3.00%	-7.37%	+4.37%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.23%	2.14%	+1.09%

Volatility

PRCS vs. RSSY - Volatility Comparison

Parnassus Core Select ETF (PRCS) and Return Stacked US Stocks & Futures Yield ETF (RSSY) have volatilities of 2.40% and 2.30%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PRCS	RSSY	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.40%	2.30%	+0.10%
Volatility (6M) Calculated over the trailing 6-month period	9.78%	9.92%	-0.14%
Volatility (1Y) Calculated over the trailing 1-year period	12.52%	13.28%	-0.76%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.86%	18.35%	-1.49%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	16.86%	18.35%	-1.49%

PRCS vs. RSSY - Expense Ratio Comparison

PRCS has a 0.58% expense ratio, which is lower than RSSY's 1.04% expense ratio.

Dividends

PRCS vs. RSSY - Dividend Comparison

PRCS's dividend yield for the trailing twelve months is around 0.13%, less than RSSY's 1.54% yield.

Position	TTM	2025
PRCS Parnassus Core Select ETF	0.13%	0.13%
RSSY Return Stacked US Stocks & Futures Yield ETF	1.54%	2.04%

Frequently Asked Questions

Can I hold both PRCS and RSSY in my portfolio?

PRCS and RSSY have a correlation of 0.50, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, PRCS or RSSY?

PRCS has higher volatility (2.40%) compared to RSSY (2.30%). In terms of maximum drawdown, PRCS dropped -18.20% vs RSSY's -29.57%.

Which ETF is better, PRCS or RSSY?

On 1-year performance, RSSY leads with 47.81% vs 12.71% for PRCS. On fees, PRCS is cheaper at 0.58% per year. On volatility, RSSY has been the lower-risk option at 2.30%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, PRCS or RSSY?

Over the 1-year period, RSSY has performed better with a 47.81% return vs 12.71%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, PRCS or RSSY?

PRCS is cheaper with a 0.58% expense ratio, compared with 1.04% for RSSY.

Which ETF pays a higher dividend yield, PRCS or RSSY?

RSSY has the higher dividend yield at 1.54%, compared with 0.13% for PRCS.

What is the main difference between PRCS and RSSY?

They also come from different issuers: Parnassus and Return Stacked. Their fees differ too: 0.58% for PRCS and 1.04% for RSSY.

Which has better risk-adjusted returns?

RSSY currently has the higher Sharpe Ratio (3.63 vs 1.02), 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.