RELL vs. SPY

Last updated Jun 23, 2026

RELL (Richardson Electronics, Ltd.) is a stock, while SPY (State Street SPDR S&P 500 ETF) is S&P 500 fund tracking the S&P 500 Index. Over the past 10 years, RELL returned 16.53%/yr vs 15.70%/yr for SPY. At a 0.23 correlation, their price movements are largely independent.

Performance

RELL vs. SPY - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Richardson Electronics, Ltd. (RELL) and State Street SPDR S&P 500 ETF (SPY). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, RELL achieves a 69.91% return, which is significantly higher than SPY's 9.74% return. Over the past 10 years, RELL has outperformed SPY with an annualized return of 16.53%, while SPY has yielded a comparatively lower 15.70% annualized return.

RELL

• 1D: -1.56%
• 1M: 4.33%
• YTD: 69.91%
• 6M: 71.81%
• 1Y: 110.00%
• 3Y*: 5.27%
• 5Y*: 19.51%
• 10Y*: 16.53%

SPY

• 1D: -0.31%
• 1M: 0.09%
• YTD: 9.74%
• 6M: 9.27%
• 1Y: 26.65%
• 3Y*: 21.27%
• 5Y*: 13.51%
• 10Y*: 15.70%

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

RELL vs. SPY - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
RELL Richardson Electronics, Ltd.	69.91%	-20.61%	7.37%	-36.37%	60.29%	195.92%	-12.68%	-32.57%	32.67%	11.29%
SPY State Street SPDR S&P 500 ETF	9.74%	17.72%	24.89%	26.18%	-18.18%	28.73%	18.33%	31.22%	-4.57%	21.71%

Correlation

The correlation between RELL and SPY is 0.58, 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	0.58
Correlation (3Y) Calculated over the trailing 3-year period	0.45
Correlation (5Y) Calculated over the trailing 5-year period	0.43
Correlation (10Y) Calculated over the trailing 10-year period	0.30
Correlation (All Time) Calculated using the full available price history since Jan 29, 1993	0.23

Over the past year, RELL and SPY have become more correlated (0.58) than their long-term average of 0.23, meaning their price movements have been converging.

Return for Risk

RELL vs. SPY — Risk / Return Rank

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

RELL

RELL Risk / Return Rank: 87
RELL Sharpe Ratio Rank: 87
RELL Sortino Ratio Rank: 85
RELL Omega Ratio Rank: 83
RELL Calmar Ratio Rank: 90
RELL Martin Ratio Rank: 88

SPY

SPY Risk / Return Rank: 68
SPY Sharpe Ratio Rank: 69
SPY Sortino Ratio Rank: 66
SPY Omega Ratio Rank: 68
SPY Calmar Ratio Rank: 63
SPY Martin Ratio Rank: 74

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.

RELL vs. SPY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Richardson Electronics, Ltd. (RELL) and State Street SPDR S&P 500 ETF (SPY). 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.

	RELL	SPY	Difference
Sharpe ratio: Return per unit of total volatility	1.85	2.16	-0.31
Sortino ratio: Return per unit of downside risk	2.61	2.91	-0.30
Omega ratio: Gain probability vs. loss probability	1.32	1.39	-0.08
Calmar ratio: Return relative to maximum drawdown	4.34	3.01	+1.33
Martin ratio: Return relative to average drawdown	10.52	13.54	-3.02

RELL vs. SPY - Sharpe Ratio Comparison

The current RELL Sharpe Ratio is 1.85, which is comparable to the SPY Sharpe Ratio of 2.16. The chart below compares the historical Sharpe Ratios of RELL and SPY, 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

RELL vs. SPY - Drawdown Comparison

The maximum RELL drawdown since its inception was -84.15%, which is greater than SPY's maximum drawdown of -55.19%. Use the drawdown chart below to compare losses from any high point for RELL and SPY.

Drawdown Indicators

	RELL	SPY	Difference
Max Drawdown Largest peak-to-trough decline	-84.15%	-55.19%	-28.96%
Max Drawdown (1Y) Largest decline over 1 year	-25.49%	-8.88%	-16.61%
Max Drawdown (3Y) Largest decline over 3 years	-50.88%	-18.76%	-32.12%
Max Drawdown (5Y) Largest decline over 5 years	-68.48%	-24.50%	-43.98%
Max Drawdown (10Y) Largest decline over 10 years	-68.48%	-33.72%	-34.76%
Current Drawdown Current decline from peak	-25.96%	-1.75%	-24.21%
Average Drawdown Average peak-to-trough decline	-39.07%	-9.04%	-30.03%
Ulcer Index Depth and duration of drawdowns from previous peaks	10.50%	1.97%	+8.53%

Volatility

RELL vs. SPY - Volatility Comparison

Richardson Electronics, Ltd. (RELL) has a higher volatility of 19.85% compared to State Street SPDR S&P 500 ETF (SPY) at 4.64%. This indicates that RELL's price experiences larger fluctuations and is considered to be riskier than SPY based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RELL	SPY	Difference
Volatility (1M) Calculated over the trailing 1-month period	19.85%	4.64%	+15.21%
Volatility (6M) Calculated over the trailing 6-month period	49.54%	9.75%	+39.79%
Volatility (1Y) Calculated over the trailing 1-year period	60.02%	12.43%	+47.59%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	53.10%	17.14%	+35.96%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	44.75%	17.99%	+26.76%

Dividends

RELL vs. SPY - Dividend Comparison

RELL's dividend yield for the trailing twelve months is around 1.31%, more than SPY's 1.01% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
RELL Richardson Electronics, Ltd.	1.31%	2.21%	1.71%	1.80%	1.13%	1.78%	3.82%	4.26%	2.76%	3.56%	3.81%	4.23%
SPY State Street SPDR S&P 500 ETF	1.01%	1.07%	1.21%	1.40%	1.65%	1.20%	1.52%	1.75%	2.04%	1.80%	2.03%	2.06%

Frequently Asked Questions

Can I hold both RELL and SPY in my portfolio?

RELL and SPY have a correlation of 0.58, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, RELL or SPY?

RELL has higher volatility (19.85%) compared to SPY (4.64%). In terms of maximum drawdown, RELL dropped -84.15% vs SPY's -55.19%.

Which has better risk-adjusted returns?

SPY currently has the higher Sharpe Ratio (2.16 vs 1.85), 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.