SPWR vs. VFIAX

Last updated Jun 25, 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 0.32 correlation, their price movements are largely independent.

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: -0.95%
• 1M: —
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

VFIAX

• 1D: -1.44%
• 1M: -1.34%
• YTD: 8.19%
• 6M: 6.86%
• 1Y: 22.31%
• 3Y*: 20.77%
• 5Y*: 13.11%
• 10Y*: 15.59%

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

SPWR vs. VFIAX - Yearly Performance Comparison

	2026 (YTD)
SPWR SunPower Corporation	-41.68%
VFIAX Vanguard 500 Index Fund Admiral Shares	-1.96%

Correlation

The correlation between SPWR and VFIAX is 0.32, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (All Time) Calculated using the full available price history since May 28, 2026	0.32

Return for Risk

SPWR vs. VFIAX — Risk / Return Rank

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

SPWR

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

VFIAX

VFIAX Risk / Return Rank: 52
VFIAX Sharpe Ratio Rank: 49
VFIAX Sortino Ratio Rank: 44
VFIAX Omega Ratio Rank: 46
VFIAX Calmar Ratio Rank: 53
VFIAX Martin Ratio Rank: 66

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.

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.

	SPWR	VFIAX	Difference
Sharpe ratio: Return per unit of total volatility	—	1.90	—
Sortino ratio: Return per unit of downside risk	—	2.58	—
Omega ratio: Gain probability vs. loss probability	—	1.34	—
Calmar ratio: Return relative to maximum drawdown	—	2.67	—
Martin ratio: Return relative to average drawdown	—	12.00	—

Drawdowns

SPWR vs. VFIAX - Drawdown Comparison

The maximum SPWR drawdown since its inception was -42.75%, 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	-42.75%	-55.20%	+12.45%
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	-42.75%	-3.13%	-39.62%
Average Drawdown Average peak-to-trough decline	-20.52%	-9.38%	-11.14%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	1.98%	—

Volatility

Volatility by Period

	SPWR	VFIAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	4.90%	—
Volatility (6M) Calculated over the trailing 6-month period	—	9.93%	—
Volatility (1Y) Calculated over the trailing 1-year period	97.02%	12.57%	+84.45%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	97.02%	17.00%	+80.02%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	97.02%	18.08%	+78.94%

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 1.05%.

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	1.05%	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 0.32, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.