SPWR vs. VFIAX

Last updated Jun 4, 2026

SPWR (SunPower Corporation) is a stock, while VFIAX (Vanguard 500 Index Fund Admiral Shares) is S&P 500 fund tracking the S&P 500 Index. At a correlation of -0.40, they often move in opposite directions.

Performance

SPWR vs. VFIAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in SunPower Corporation (SPWR) and Vanguard 500 Index Fund Admiral Shares (VFIAX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

SPWR

• 1D: 7.14%
• 1M: —
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

VFIAX

• 1D: 0.13%
• 1M: 5.80%
• YTD: 11.69%
• 6M: 11.73%
• 1Y: 28.95%
• 3Y*: 22.72%
• 5Y*: 14.24%
• 10Y*: 15.63%

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

SPWR vs. VFIAX - Yearly Performance Comparison

	2026 (YTD)
SPWR SunPower Corporation	1.94%
VFIAX Vanguard 500 Index Fund Admiral Shares	0.63%

Correlation

The correlation between SPWR and VFIAX is -0.40, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.

	Correlation
Correlation (All Time) Calculated using the full available price history since May 29, 2026	-0.40

Return for Risk

SPWR vs. VFIAX — Risk / Return Rank

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

VFIAX

VFIAX Risk / Return Rank: 73
VFIAX Sharpe Ratio Rank: 75
VFIAX Sortino Ratio Rank: 67
VFIAX Omega Ratio Rank: 67
VFIAX Calmar Ratio Rank: 74
VFIAX Martin Ratio Rank: 83

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.

SPWR vs. VFIAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for SunPower Corporation (SPWR) and Vanguard 500 Index Fund Admiral Shares (VFIAX). 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.

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

Sharpe Ratios by Period

	SPWR	VFIAX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	—	2.52	—
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.85	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.87	—
Sharpe Ratio (All Time) Calculated using the full available price history	3.14	0.47	+2.67

Drawdowns

SPWR vs. VFIAX - Drawdown Comparison

The maximum SPWR drawdown since its inception was -7.55%, smaller than the maximum VFIAX drawdown of -55.20%. Use the drawdown chart below to compare losses from any high point for SPWR and VFIAX.

Drawdown Indicators

	SPWR	VFIAX	Difference
Max Drawdown Largest peak-to-trough decline	-7.55%	-55.20%	+47.65%
Max Drawdown (1Y) Largest decline over 1 year	—	-8.90%	—
Max Drawdown (3Y) Largest decline over 3 years	—	-18.75%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-24.53%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-33.83%	—
Current Drawdown Current decline from peak	-0.94%	0.00%	-0.94%
Average Drawdown Average peak-to-trough decline	-2.83%	-9.40%	+6.57%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	1.90%	—

Volatility

Volatility by Period

	SPWR	VFIAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	2.82%	—
Volatility (6M) Calculated over the trailing 6-month period	—	8.98%	—
Volatility (1Y) Calculated over the trailing 1-year period	86.79%	11.86%	+74.93%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	86.79%	16.90%	+69.89%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	86.79%	18.07%	+68.72%

Dividends

SPWR vs. VFIAX - Dividend Comparison

SPWR has not paid dividends to shareholders, while VFIAX's dividend yield for the trailing twelve months is around 1.01%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
SPWR SunPower Corporation	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
VFIAX Vanguard 500 Index Fund Admiral Shares	1.01%	1.12%	1.24%	1.45%	1.68%	1.24%	1.53%	1.87%	2.05%	1.78%	2.02%	2.10%

Frequently Asked Questions

Can I hold both SPWR and VFIAX in my portfolio?

SPWR and VFIAX have a correlation of -0.40, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.