TAN vs. SPWR

Last updated Jun 3, 2026

TAN (Invesco Solar ETF) is Alternative Energy Equities fund tracking the MAC Global Solar Energy Index, while SPWR (SunPower Corporation) is a stock. A 0.50 correlation means they provide meaningful diversification when combined.

Performance

TAN vs. SPWR - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Invesco Solar ETF (TAN) and SunPower Corporation (SPWR). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

TAN

• 1D: 1.60%
• 1M: 21.93%
• YTD: 47.13%
• 6M: 51.73%
• 1Y: 127.12%
• 3Y*: 0.29%
• 5Y*: -0.77%
• 10Y*: 13.81%

SPWR

• 1D: -4.85%
• 1M: —
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

TAN vs. SPWR - Yearly Performance Comparison

	2026 (YTD)
TAN Invesco Solar ETF	0.47%
SPWR SunPower Corporation	-4.85%

Correlation

The correlation between TAN and SPWR is 0.50, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (All Time) Calculated using the full available price history since May 29, 2026	0.50

Return for Risk

TAN vs. SPWR — Risk / Return Rank

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

TAN

TAN Risk / Return Rank: 89
TAN Sharpe Ratio Rank: 93
TAN Sortino Ratio Rank: 87
TAN Omega Ratio Rank: 80
TAN Calmar Ratio Rank: 96
TAN 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.

TAN vs. SPWR - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Invesco Solar ETF (TAN) and SunPower Corporation (SPWR). 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.

	TAN	SPWR	Difference
Sharpe ratio Return per unit of total volatility	3.44	—	—
Sortino ratio Return per unit of downside risk	3.94	—	—
Omega ratio Gain probability vs. loss probability	1.48	—	—
Calmar ratio Return relative to maximum drawdown	9.06	—	—
Martin ratio Return relative to average drawdown	22.01	—	—
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

Sharpe Ratios by Period

	TAN	SPWR	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.44	—	—
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.02	—	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.37	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	-0.12	-1.89	+1.77

Drawdowns

TAN vs. SPWR - Drawdown Comparison

The maximum TAN drawdown since its inception was -95.29%, which is greater than SPWR's maximum drawdown of -7.55%. Use the drawdown chart below to compare losses from any high point for TAN and SPWR.

Drawdown Indicators

	TAN	SPWR	Difference
Max Drawdown Largest peak-to-trough decline	-95.29%	-7.55%	-87.74%
Max Drawdown (1Y) Largest decline over 1 year	-13.62%	—	—
Max Drawdown (3Y) Largest decline over 3 years	-64.40%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-73.95%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-78.53%	—	—
Current Drawdown Current decline from peak	-66.81%	-7.55%	-59.26%
Average Drawdown Average peak-to-trough decline	-78.51%	-3.46%	-75.05%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.61%	—	—

Volatility

Volatility by Period

	TAN	SPWR	Difference
Volatility (1M) Calculated over the trailing 1-month period	11.81%	—	—
Volatility (6M) Calculated over the trailing 6-month period	25.30%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	37.21%	63.96%	-26.75%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	39.74%	63.96%	-24.22%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	37.98%	63.96%	-25.98%

Dividends

TAN vs. SPWR - Dividend Comparison

Neither TAN nor SPWR has paid dividends to shareholders.

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%
TAN Invesco Solar ETF	0.00%	0.00%	0.50%	0.09%	0.00%	0.00%	0.09%	0.30%	0.69%	1.77%	5.04%	1.60%

Frequently Asked Questions

Can I hold both TAN and SPWR in my portfolio?

TAN and SPWR 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.