SPMO vs. PRBLX

Last updated Jun 14, 2026

SPMO (Invesco S&P 500 Momentum ETF) and PRBLX (Parnassus Core Equity Fund) are both funds - SPMO is a Momentum fund tracking the S&P 500 Momentum Index, while PRBLX is a Large Cap Blend Equities fund managed by Parnassus. Over the past 10 years, SPMO returned 20.86%/yr vs 13.56%/yr for PRBLX. A 0.74 correlation means they provide meaningful diversification when combined. SPMO charges 0.13%/yr vs 0.82%/yr for PRBLX.

Performance

SPMO vs. PRBLX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Invesco S&P 500 Momentum ETF (SPMO) and Parnassus Core Equity Fund (PRBLX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, SPMO achieves a 28.15% return, which is significantly higher than PRBLX's 5.58% return. Over the past 10 years, SPMO has outperformed PRBLX with an annualized return of 20.86%, while PRBLX has yielded a comparatively lower 13.56% annualized return.

SPMO

• 1D: 1.26%
• 1M: 6.27%
• YTD: 28.15%
• 6M: 28.70%
• 1Y: 44.90%
• 3Y*: 41.53%
• 5Y*: 23.50%
• 10Y*: 20.86%

PRBLX

• 1D: 1.55%
• 1M: 1.37%
• YTD: 5.58%
• 6M: 6.06%
• 1Y: 13.44%
• 3Y*: 15.85%
• 5Y*: 9.88%
• 10Y*: 13.56%

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

SPMO vs. PRBLX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
SPMO Invesco S&P 500 Momentum ETF	28.15%	26.58%	45.82%	17.56%	-10.45%	22.64%	28.25%	25.93%	-0.92%	27.76%
PRBLX Parnassus Core Equity Fund	5.58%	11.67%	18.58%	24.97%	-18.64%	27.59%	21.21%	30.68%	-0.30%	16.63%

Correlation

The correlation between SPMO and PRBLX is 0.73, 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	0.73
Correlation (3Y) Calculated over the trailing 3-year period	0.79
Correlation (5Y) Calculated over the trailing 5-year period	0.80
Correlation (10Y) Calculated over the trailing 10-year period	0.77
Correlation (All Time) Calculated using the full available price history since Oct 12, 2015	0.74

The correlation between SPMO and PRBLX has been stable across timeframes, ranging from 0.73 to 0.80 - a consistent structural relationship.

Return for Risk

SPMO vs. PRBLX — Risk / Return Rank

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

SPMO

SPMO Risk / Return Rank: 79
SPMO Sharpe Ratio Rank: 81
SPMO Sortino Ratio Rank: 78
SPMO Omega Ratio Rank: 80
SPMO Calmar Ratio Rank: 77
SPMO Martin Ratio Rank: 78

PRBLX

PRBLX Risk / Return Rank: 20
PRBLX Sharpe Ratio Rank: 21
PRBLX Sortino Ratio Rank: 20
PRBLX Omega Ratio Rank: 20
PRBLX Calmar Ratio Rank: 16
PRBLX Martin Ratio Rank: 20

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.

SPMO vs. PRBLX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Invesco S&P 500 Momentum ETF (SPMO) and Parnassus Core Equity Fund (PRBLX). 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.

	SPMO	PRBLX	Difference
Sharpe ratio: Return per unit of total volatility	2.24	1.02	+1.22
Sortino ratio: Return per unit of downside risk	2.98	1.48	+1.50
Omega ratio: Gain probability vs. loss probability	1.41	1.18	+0.23
Calmar ratio: Return relative to maximum drawdown	3.44	1.08	+2.36
Martin ratio: Return relative to average drawdown	13.01	4.17	+8.84

SPMO vs. PRBLX - Sharpe Ratio Comparison

The current SPMO Sharpe Ratio is 2.24, which is higher than the PRBLX Sharpe Ratio of 1.02. The chart below compares the historical Sharpe Ratios of SPMO and PRBLX, 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

SPMO vs. PRBLX - Drawdown Comparison

The maximum SPMO drawdown since its inception was -30.95%, smaller than the maximum PRBLX drawdown of -42.20%. Use the drawdown chart below to compare losses from any high point for SPMO and PRBLX.

Drawdown Indicators

	SPMO	PRBLX	Difference
Max Drawdown Largest peak-to-trough decline	-30.95%	-42.20%	+11.25%
Max Drawdown (1Y) Largest decline over 1 year	-12.70%	-11.63%	-1.07%
Max Drawdown (3Y) Largest decline over 3 years	-20.13%	-16.31%	-3.82%
Max Drawdown (5Y) Largest decline over 5 years	-22.74%	-26.31%	+3.57%
Max Drawdown (10Y) Largest decline over 10 years	-30.95%	-30.09%	-0.86%
Current Drawdown Current decline from peak	-1.68%	-1.55%	-0.13%
Average Drawdown Average peak-to-trough decline	-4.60%	-4.04%	-0.56%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.35%	2.99%	+0.36%

Volatility

SPMO vs. PRBLX - Volatility Comparison

Invesco S&P 500 Momentum ETF (SPMO) has a higher volatility of 10.29% compared to Parnassus Core Equity Fund (PRBLX) at 4.20%. This indicates that SPMO's price experiences larger fluctuations and is considered to be riskier than PRBLX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SPMO	PRBLX	Difference
Volatility (1M) Calculated over the trailing 1-month period	10.29%	4.20%	+6.09%
Volatility (6M) Calculated over the trailing 6-month period	16.73%	9.70%	+7.03%
Volatility (1Y) Calculated over the trailing 1-year period	19.48%	12.21%	+7.27%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.65%	16.31%	+3.34%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.48%	17.29%	+3.19%

SPMO vs. PRBLX - Expense Ratio Comparison

SPMO has a 0.13% expense ratio, which is lower than PRBLX's 0.82% expense ratio.

Dividends

SPMO vs. PRBLX - Dividend Comparison

SPMO's dividend yield for the trailing twelve months is around 0.67%, less than PRBLX's 18.03% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
PRBLX Parnassus Core Equity Fund	18.03%	19.08%	10.00%	6.01%	10.13%	7.77%	5.87%	8.02%	9.64%	7.16%	3.80%	9.62%
SPMO Invesco S&P 500 Momentum ETF	0.67%	0.73%	0.48%	1.63%	1.66%	0.52%	1.27%	1.39%	1.05%	0.77%	1.94%	0.36%

Frequently Asked Questions

Can I hold both SPMO and PRBLX in my portfolio?

SPMO and PRBLX have a correlation of 0.73, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, SPMO or PRBLX?

SPMO has higher volatility (10.29%) compared to PRBLX (4.20%). In terms of maximum drawdown, SPMO dropped -30.95% vs PRBLX's -42.20%.

Which has better risk-adjusted returns?

SPMO currently has the higher Sharpe Ratio (2.24 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.