BAESY vs. ATO.PA

Last updated Jun 13, 2026

BAESY (BAE Systems PLC) and ATO.PA (Atos SE) are both stocks. BAESY operates in Aerospace & Defense (Industrials), while ATO.PA operates in Information Technology Services (Technology). Over the past 10 years, BAESY returned 18.72%/yr vs -38.00%/yr for ATO.PA. At a 0.22 correlation, their price movements are largely independent.

Performance

BAESY vs. ATO.PA - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in BAE Systems PLC (BAESY) and Atos SE (ATO.PA). The values are adjusted to include any dividend payments, if applicable.

Different Trading Currencies

BAESY is traded in USD, while ATO.PA is traded in EUR. To make them comparable, the ATO.PA values have been converted to USD using the latest available exchange rates.

Returns By Period

In the year-to-date period, BAESY achieves a 11.25% return, which is significantly higher than ATO.PA's -31.93% return. Over the past 10 years, BAESY has outperformed ATO.PA with an annualized return of 18.72%, while ATO.PA has yielded a comparatively lower -38.00% annualized return.

BAESY

• 1D: -4.00%
• 1M: -1.83%
• YTD: 11.25%
• 6M: 13.51%
• 1Y: 0.44%
• 3Y*: 30.63%
• 5Y*: 30.61%
• 10Y*: 18.72%

ATO.PA

• 1D: 2.43%
• 1M: -8.19%
• YTD: -31.93%
• 6M: -38.17%
• 1Y: -11.18%
• 3Y*: -66.90%
• 5Y*: -61.75%
• 10Y*: -38.00%

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

BAESY vs. ATO.PA - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
BAESY BAE Systems PLC	11.25%	65.51%	1.23%	40.91%	46.40%	14.56%	-3.43%	34.69%	-22.16%	13.28%
ATO.PA Atos SE	-31.93%	118.88%	-95.34%	-19.30%	-77.35%	-53.41%	9.53%	37.33%	-43.84%	38.17%

Correlation

The correlation between BAESY and ATO.PA is 0.10, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.10
Correlation (3Y) Calculated over the trailing 3-year period	0.02
Correlation (5Y) Calculated over the trailing 5-year period	0.07
Correlation (10Y) Calculated over the trailing 10-year period	0.16
Correlation (All Time) Calculated using the full available price history since Jul 13, 2007	0.22

The correlation between BAESY and ATO.PA shifts across timeframes, from 0.02 (3 years) to 0.22 (all time), reflecting how their relationship changes across market environments.

Return for Risk

BAESY vs. ATO.PA — Risk / Return Rank

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

BAESY

BAESY Risk / Return Rank: 41
BAESY Sharpe Ratio Rank: 43
BAESY Sortino Ratio Rank: 38
BAESY Omega Ratio Rank: 37
BAESY Calmar Ratio Rank: 43
BAESY Martin Ratio Rank: 43

ATO.PA

ATO.PA Risk / Return Rank: 35
ATO.PA Sharpe Ratio Rank: 35
ATO.PA Sortino Ratio Rank: 36
ATO.PA Omega Ratio Rank: 35
ATO.PA Calmar Ratio Rank: 36
ATO.PA Martin Ratio Rank: 35

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.

BAESY vs. ATO.PA - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for BAE Systems PLC (BAESY) and Atos SE (ATO.PA). 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.

	BAESY	ATO.PA	Difference
Sharpe ratio: Return per unit of total volatility	0.01	-0.18	+0.20
Sortino ratio: Return per unit of downside risk	0.25	0.16	+0.09
Omega ratio: Gain probability vs. loss probability	1.03	1.02	+0.01
Calmar ratio: Return relative to maximum drawdown	0.02	-0.23	+0.25
Martin ratio: Return relative to average drawdown	0.04	-0.42	+0.46

BAESY vs. ATO.PA - Sharpe Ratio Comparison

The current BAESY Sharpe Ratio is 0.01, which is higher than the ATO.PA Sharpe Ratio of -0.18. The chart below compares the historical Sharpe Ratios of BAESY and ATO.PA, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

BAESY vs. ATO.PA - Drawdown Comparison

The maximum BAESY drawdown since its inception was -59.20%, smaller than the maximum ATO.PA drawdown of -99.86%. Use the drawdown chart below to compare losses from any high point for BAESY and ATO.PA.

Drawdown Indicators

	BAESY	ATO.PA	Difference
Max Drawdown Largest peak-to-trough decline	-59.20%	-99.86%	+40.66%
Max Drawdown (1Y) Largest decline over 1 year	-23.59%	-47.80%	+24.21%
Max Drawdown (3Y) Largest decline over 3 years	-23.59%	-99.00%	+75.41%
Max Drawdown (5Y) Largest decline over 5 years	-23.59%	-99.75%	+76.16%
Max Drawdown (10Y) Largest decline over 10 years	-42.13%	-99.86%	+57.73%
Current Drawdown Current decline from peak	-16.92%	-99.55%	+82.63%
Average Drawdown Average peak-to-trough decline	-19.32%	-40.06%	+20.74%
Ulcer Index Depth and duration of drawdowns from previous peaks	10.17%	26.39%	-16.22%

Volatility

BAESY vs. ATO.PA - Volatility Comparison

The current volatility for BAE Systems PLC (BAESY) is 10.68%, while Atos SE (ATO.PA) has a volatility of 15.93%. This indicates that BAESY experiences smaller price fluctuations and is considered to be less risky than ATO.PA based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BAESY	ATO.PA	Difference
Volatility (1M) Calculated over the trailing 1-month period	10.68%	15.93%	-5.25%
Volatility (6M) Calculated over the trailing 6-month period	25.10%	43.23%	-18.13%
Volatility (1Y) Calculated over the trailing 1-year period	31.92%	60.68%	-28.76%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	28.12%	127.66%	-99.54%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	27.90%	93.35%	-65.45%

Dividends

BAESY vs. ATO.PA - Dividend Comparison

BAESY's dividend yield for the trailing twelve months is around 1.90%, while ATO.PA has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ATO.PA Atos 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%
BAESY BAE Systems PLC	1.90%	1.90%	2.79%	2.40%	3.09%	4.46%	7.05%	3.66%	4.93%	5.71%	6.26%	4.38%

Financials

Frequently Asked Questions

Can I hold both BAESY and ATO.PA in my portfolio?

BAESY and ATO.PA have a correlation of 0.10, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.