WOOF vs. SPY

Last updated Jun 4, 2026

WOOF (Petco Health and Wellness Company, Inc.) 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 5 years, WOOF returned -32.70%/yr vs 13.83%/yr for SPY. At a 0.39 correlation, their price movements are largely independent.

Performance

WOOF vs. SPY - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Petco Health and Wellness Company, Inc. (WOOF) 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, WOOF achieves a 8.54% return, which is significantly lower than SPY's 10.91% return.

WOOF

• 1D: 3.04%
• 1M: 9.71%
• YTD: 8.54%
• 6M: -2.56%
• 1Y: -17.79%
• 3Y*: -27.40%
• 5Y*: -32.70%
• 10Y*: —

SPY

• 1D: -0.70%
• 1M: 5.05%
• YTD: 10.91%
• 6M: 10.91%
• 1Y: 27.98%
• 3Y*: 22.35%
• 5Y*: 13.83%
• 10Y*: 15.49%

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

WOOF vs. SPY - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
WOOF Petco Health and Wellness Company, Inc.	8.54%	-26.25%	20.57%	-66.67%	-52.10%	-32.69%
SPY State Street SPDR S&P 500 ETF	10.91%	17.72%	24.89%	26.18%	-18.18%	27.17%

Correlation

The correlation between WOOF and SPY is 0.35, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.35
Correlation (3Y) Calculated over the trailing 3-year period	0.33
Correlation (5Y) Calculated over the trailing 5-year period	0.41
Correlation (All Time) Calculated using the full available price history since Jan 15, 2021	0.39

Return for Risk

WOOF vs. SPY — Risk / Return Rank

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

WOOF

WOOF Risk / Return Rank: 32
WOOF Sharpe Ratio Rank: 31
WOOF Sortino Ratio Rank: 35
WOOF Omega Ratio Rank: 35
WOOF Calmar Ratio Rank: 28
WOOF Martin Ratio Rank: 30

SPY

SPY Risk / Return Rank: 70
SPY Sharpe Ratio Rank: 71
SPY Sortino Ratio Rank: 69
SPY Omega Ratio Rank: 70
SPY Calmar Ratio Rank: 62
SPY Martin Ratio Rank: 75

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.

WOOF vs. SPY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Petco Health and Wellness Company, Inc. (WOOF) 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.

	WOOF	SPY	Difference
Sharpe ratio Return per unit of total volatility	-0.22	2.38	-2.60
Sortino ratio Return per unit of downside risk	0.22	3.24	-3.01
Omega ratio Gain probability vs. loss probability	1.03	1.43	-0.40
Calmar ratio Return relative to maximum drawdown	-0.38	3.16	-3.55
Martin ratio Return relative to average drawdown	-0.59	14.72	-15.31
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

WOOF vs. SPY - Sharpe Ratio Comparison

The current WOOF Sharpe Ratio is -0.22, which is lower than the SPY Sharpe Ratio of 2.38. The chart below compares the historical Sharpe Ratios of WOOF 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.

Sharpe Ratios by Period

	WOOF	SPY	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.22	2.38	-2.60
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.44	0.82	-1.26
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.87	—
Sharpe Ratio (All Time) Calculated using the full available price history	-0.47	0.59	-1.06

Drawdowns

WOOF vs. SPY - Drawdown Comparison

The maximum WOOF drawdown since its inception was -94.90%, which is greater than SPY's maximum drawdown of -55.19%. Use the drawdown chart below to compare losses from any high point for WOOF and SPY.

Drawdown Indicators

	WOOF	SPY	Difference
Max Drawdown Largest peak-to-trough decline	-94.90%	-55.19%	-39.71%
Max Drawdown (1Y) Largest decline over 1 year	-46.56%	-8.88%	-37.68%
Max Drawdown (3Y) Largest decline over 3 years	-84.19%	-18.76%	-65.43%
Max Drawdown (5Y) Largest decline over 5 years	-94.65%	-24.50%	-70.15%
Max Drawdown (10Y) Largest decline over 10 years	—	-33.72%	—
Current Drawdown Current decline from peak	-89.63%	-0.70%	-88.93%
Average Drawdown Average peak-to-trough decline	-67.06%	-9.05%	-58.01%
Ulcer Index Depth and duration of drawdowns from previous peaks	30.21%	1.91%	+28.30%

Volatility

WOOF vs. SPY - Volatility Comparison

Petco Health and Wellness Company, Inc. (WOOF) has a higher volatility of 16.39% compared to State Street SPDR S&P 500 ETF (SPY) at 2.84%. This indicates that WOOF'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

	WOOF	SPY	Difference
Volatility (1M) Calculated over the trailing 1-month period	16.39%	2.84%	+13.55%
Volatility (6M) Calculated over the trailing 6-month period	44.72%	8.90%	+35.82%
Volatility (1Y) Calculated over the trailing 1-year period	79.82%	11.83%	+67.99%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	74.21%	17.05%	+57.16%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	72.61%	17.94%	+54.67%

Dividends

WOOF vs. SPY - Dividend Comparison

WOOF has not paid dividends to shareholders, while SPY's dividend yield for the trailing twelve months is around 0.98%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
SPY State Street SPDR S&P 500 ETF	0.98%	1.07%	1.21%	1.40%	1.65%	1.20%	1.52%	1.75%	2.04%	1.80%	2.03%	2.06%
WOOF Petco Health and Wellness Company, Inc.	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both WOOF and SPY in my portfolio?

WOOF and SPY have a correlation of 0.35, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, WOOF or SPY?

WOOF has higher volatility (16.39%) compared to SPY (2.84%). In terms of maximum drawdown, WOOF dropped -94.90% vs SPY's -55.19%.

Which has better risk-adjusted returns?

SPY currently has the higher Sharpe Ratio (2.38 vs -0.22), 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.