^GSPTSE vs. COST

Last updated Jun 5, 2026

^GSPTSE (S&P TSX Composite Index (Canada)) is an index, while COST (Costco Wholesale Corporation) is a stock. Over the past 10 years, ^GSPTSE returned 9.45%/yr vs 23.29%/yr for COST. At a 0.17 correlation, their price movements are largely independent.

Performance

^GSPTSE vs. COST - Performance Comparison

The chart below illustrates the hypothetical performance of a CA$10,000 investment in S&P TSX Composite Index (Canada) (^GSPTSE) and Costco Wholesale Corporation (COST). The values are adjusted to include any dividend payments, if applicable.

Different Trading Currencies

^GSPTSE is traded in CAD, while COST is traded in USD. To make them comparable, the COST values have been converted to CAD using the latest available exchange rates.

Returns By Period

In the year-to-date period, ^GSPTSE achieves a 11.05% return, which is significantly lower than COST's 13.28% return. Over the past 10 years, ^GSPTSE has underperformed COST with an annualized return of 9.45%, while COST has yielded a comparatively higher 23.29% annualized return.

^GSPTSE

• 1D: 1.19%
• 1M: 4.92%
• YTD: 11.05%
• 6M: 11.88%
• 1Y: 33.76%
• 3Y*: 20.89%
• 5Y*: 11.95%
• 10Y*: 9.45%

COST

• 1D: 0.00%
• 1M: -3.44%
• YTD: 13.28%
• 6M: 7.19%
• 1Y: -6.56%
• 3Y*: 25.92%
• 5Y*: 24.71%
• 10Y*: 23.29%

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

^GSPTSE vs. COST - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
^GSPTSE S&P TSX Composite Index (Canada)	11.05%	28.25%	17.99%	8.12%	-8.66%	21.74%	2.17%	19.13%	-11.64%	6.03%
COST Costco Wholesale Corporation	14.63%	-9.73%	51.62%	45.72%	-13.28%	50.45%	30.42%	38.54%	19.98%	14.58%

Correlation

The correlation between ^GSPTSE and COST is -0.06, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	-0.06
Correlation (3Y) Calculated over the trailing 3-year period	0.12
Correlation (5Y) Calculated over the trailing 5-year period	0.17
Correlation (10Y) Calculated over the trailing 10-year period	0.19
Correlation (All Time) Calculated using the full available price history since Jun 24, 2009	0.17

The correlation between ^GSPTSE and COST shifts across timeframes, from -0.06 (1 year) to 0.19 (10 years), reflecting how their relationship changes across market environments.

Return for Risk

^GSPTSE vs. COST — Risk / Return Rank

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

^GSPTSE

^GSPTSE Risk / Return Rank: 89
^GSPTSE Sharpe Ratio Rank: 88
^GSPTSE Sortino Ratio Rank: 86
^GSPTSE Omega Ratio Rank: 91
^GSPTSE Calmar Ratio Rank: 89
^GSPTSE Martin Ratio Rank: 93

COST

COST Risk / Return Rank: 24
COST Sharpe Ratio Rank: 26
COST Sortino Ratio Rank: 22
COST Omega Ratio Rank: 23
COST Calmar Ratio Rank: 27
COST Martin Ratio Rank: 22

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.

^GSPTSE vs. COST - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for S&P TSX Composite Index (Canada) (^GSPTSE) and Costco Wholesale Corporation (COST). 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.

	^GSPTSE	COST	Difference
Sharpe ratio: Return per unit of total volatility	2.67	-0.33	+3.00
Sortino ratio: Return per unit of downside risk	3.45	-0.34	+3.78
Omega ratio: Gain probability vs. loss probability	1.48	0.96	+0.52
Calmar ratio: Return relative to maximum drawdown	3.63	-0.42	+4.05
Martin ratio: Return relative to average drawdown	16.31	-1.03	+17.34
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

^GSPTSE vs. COST - Sharpe Ratio Comparison

The current ^GSPTSE Sharpe Ratio is 2.67, which is higher than the COST Sharpe Ratio of -0.33. The chart below compares the historical Sharpe Ratios of ^GSPTSE and COST, 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

	^GSPTSE	COST	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.67	-0.33	+3.00
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.91	1.13	-0.21
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.63	1.08	-0.45
Sharpe Ratio (All Time) Calculated using the full available price history	0.44	1.19	-0.75

Drawdowns

^GSPTSE vs. COST - Drawdown Comparison

The maximum ^GSPTSE drawdown since its inception was -49.99%, which is greater than COST's maximum drawdown of -30.06%. Use the drawdown chart below to compare losses from any high point for ^GSPTSE and COST.

Drawdown Indicators

	^GSPTSE	COST	Difference
Max Drawdown Largest peak-to-trough decline	-49.99%	-30.06%	-19.93%
Max Drawdown (1Y) Largest decline over 1 year	-9.33%	-15.67%	+6.34%
Max Drawdown (3Y) Largest decline over 3 years	-12.79%	-23.23%	+10.44%
Max Drawdown (5Y) Largest decline over 5 years	-17.57%	-30.06%	+12.49%
Max Drawdown (10Y) Largest decline over 10 years	-37.43%	-30.06%	-7.37%
Current Drawdown Current decline from peak	0.00%	-11.93%	+11.93%
Average Drawdown Average peak-to-trough decline	-11.51%	-5.60%	-5.91%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.07%	8.82%	-6.75%

Volatility

^GSPTSE vs. COST - Volatility Comparison

The current volatility for S&P TSX Composite Index (Canada) (^GSPTSE) is 3.51%, while Costco Wholesale Corporation (COST) has a volatility of 8.34%. This indicates that ^GSPTSE experiences smaller price fluctuations and is considered to be less risky than COST based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	^GSPTSE	COST	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.51%	8.34%	-4.83%
Volatility (6M) Calculated over the trailing 6-month period	10.36%	15.29%	-4.93%
Volatility (1Y) Calculated over the trailing 1-year period	12.71%	19.87%	-7.16%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	13.16%	22.07%	-8.91%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	15.09%	21.61%	-6.52%

Frequently Asked Questions

Can I hold both ^GSPTSE and COST in my portfolio?

^GSPTSE and COST have a correlation of -0.06, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ^GSPTSE or COST?

COST has higher volatility (8.34%) compared to ^GSPTSE (3.51%). In terms of maximum drawdown, ^GSPTSE dropped -49.99% vs COST's -30.06%.

Which has better risk-adjusted returns?

^GSPTSE currently has the higher Sharpe Ratio (2.67 vs -0.33), 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.