CSTM vs. SPY

Last updated Jun 4, 2026

CSTM (Constellium SE) 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 10 years, CSTM returned 22.30%/yr vs 15.49%/yr for SPY. At a 0.45 correlation, their price movements are largely independent.

Performance

CSTM vs. SPY - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Constellium SE (CSTM) 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, CSTM achieves a 90.24% return, which is significantly higher than SPY's 10.91% return. Over the past 10 years, CSTM has outperformed SPY with an annualized return of 22.30%, while SPY has yielded a comparatively lower 15.49% annualized return.

CSTM

• 1D: -0.58%
• 1M: 16.28%
• YTD: 90.24%
• 6M: 99.44%
• 1Y: 182.81%
• 3Y*: 31.03%
• 5Y*: 14.93%
• 10Y*: 22.30%

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)

CSTM vs. SPY - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
CSTM Constellium SE	90.24%	83.54%	-48.55%	68.72%	-33.95%	28.02%	4.40%	91.70%	-37.31%	88.98%
SPY State Street SPDR S&P 500 ETF	10.91%	17.72%	24.89%	26.18%	-18.18%	28.73%	18.33%	31.22%	-4.57%	21.71%

Correlation

The correlation between CSTM and SPY is 0.47, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.47
Correlation (3Y) Calculated over the trailing 3-year period	0.46
Correlation (5Y) Calculated over the trailing 5-year period	0.51
Correlation (10Y) Calculated over the trailing 10-year period	0.50
Correlation (All Time) Calculated using the full available price history since May 24, 2013	0.45

The correlation between CSTM and SPY has been stable across timeframes, ranging from 0.45 to 0.51 - a consistent structural relationship.

Return for Risk

CSTM vs. SPY — Risk / Return Rank

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

CSTM

CSTM Risk / Return Rank: 96
CSTM Sharpe Ratio Rank: 97
CSTM Sortino Ratio Rank: 96
CSTM Omega Ratio Rank: 93
CSTM Calmar Ratio Rank: 98
CSTM Martin Ratio Rank: 98

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.

CSTM vs. SPY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Constellium SE (CSTM) 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.

	CSTM	SPY	Difference
Sharpe ratio Return per unit of total volatility	4.04	2.38	+1.66
Sortino ratio Return per unit of downside risk	4.41	3.24	+1.17
Omega ratio Gain probability vs. loss probability	1.51	1.43	+0.08
Calmar ratio Return relative to maximum drawdown	11.53	3.16	+8.36
Martin ratio Return relative to average drawdown	37.39	14.72	+22.68
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

CSTM vs. SPY - Sharpe Ratio Comparison

The current CSTM Sharpe Ratio is 4.04, which is higher than the SPY Sharpe Ratio of 2.38. The chart below compares the historical Sharpe Ratios of CSTM 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

	CSTM	SPY	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	4.04	2.38	+1.66
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.32	0.82	-0.49
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.40	0.87	-0.47
Sharpe Ratio (All Time) Calculated using the full available price history	0.12	0.59	-0.46

Drawdowns

CSTM vs. SPY - Drawdown Comparison

The maximum CSTM drawdown since its inception was -88.70%, which is greater than SPY's maximum drawdown of -55.19%. Use the drawdown chart below to compare losses from any high point for CSTM and SPY.

Drawdown Indicators

	CSTM	SPY	Difference
Max Drawdown Largest peak-to-trough decline	-88.70%	-55.19%	-33.51%
Max Drawdown (1Y) Largest decline over 1 year	-15.96%	-8.88%	-7.08%
Max Drawdown (3Y) Largest decline over 3 years	-66.35%	-18.76%	-47.59%
Max Drawdown (5Y) Largest decline over 5 years	-66.35%	-24.50%	-41.85%
Max Drawdown (10Y) Largest decline over 10 years	-72.30%	-33.72%	-38.58%
Current Drawdown Current decline from peak	-0.58%	-0.70%	+0.12%
Average Drawdown Average peak-to-trough decline	-53.85%	-9.05%	-44.80%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.91%	1.91%	+3.00%

Volatility

CSTM vs. SPY - Volatility Comparison

Constellium SE (CSTM) has a higher volatility of 14.55% compared to State Street SPDR S&P 500 ETF (SPY) at 2.84%. This indicates that CSTM'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

	CSTM	SPY	Difference
Volatility (1M) Calculated over the trailing 1-month period	14.55%	2.84%	+11.71%
Volatility (6M) Calculated over the trailing 6-month period	34.47%	8.90%	+25.57%
Volatility (1Y) Calculated over the trailing 1-year period	45.59%	11.83%	+33.76%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	46.68%	17.05%	+29.63%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	56.43%	17.94%	+38.49%

Dividends

CSTM vs. SPY - Dividend Comparison

CSTM 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
CSTM Constellium SE	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
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%

Frequently Asked Questions

Can I hold both CSTM and SPY in my portfolio?

CSTM and SPY have a correlation of 0.47, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, CSTM or SPY?

CSTM has higher volatility (14.55%) compared to SPY (2.84%). In terms of maximum drawdown, CSTM dropped -88.70% vs SPY's -55.19%.

Which has better risk-adjusted returns?

CSTM currently has the higher Sharpe Ratio (4.04 vs 2.38), 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.