ATO.PA vs. RYCEY

Last updated Jun 13, 2026

ATO.PA (Atos SE) and RYCEY (Rolls-Royce Holdings plc) are both stocks. ATO.PA operates in Information Technology Services (Technology), while RYCEY operates in Aerospace & Defense (Industrials). Over the past 10 years, ATO.PA returned -38.20%/yr vs 8.14%/yr for RYCEY. At a 0.21 correlation, their price movements are largely independent.

Performance

ATO.PA vs. RYCEY - Performance Comparison

The chart below illustrates the hypothetical performance of a €10,000 investment in Atos SE (ATO.PA) and Rolls-Royce Holdings plc (RYCEY). The values are adjusted to include any dividend payments, if applicable.

Different Trading Currencies

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

Returns By Period

In the year-to-date period, ATO.PA achieves a -30.88% return, which is significantly lower than RYCEY's 14.16% return. Over the past 10 years, ATO.PA has underperformed RYCEY with an annualized return of -38.20%, while RYCEY has yielded a comparatively higher 8.14% annualized return.

ATO.PA

• 1D: 2.54%
• 1M: -7.02%
• YTD: -30.88%
• 6M: -37.24%
• 1Y: -11.08%
• 3Y*: -67.66%
• 5Y*: -61.40%
• 10Y*: -38.20%

RYCEY

• 1D: 1.88%
• 1M: 8.92%
• YTD: 14.16%
• 6M: 21.43%
• 1Y: 46.31%
• 3Y*: 108.15%
• 5Y*: 62.94%
• 10Y*: 8.14%

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

ATO.PA vs. RYCEY - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ATO.PA Atos SE	-30.88%	92.96%	-95.04%	-21.77%	-75.90%	-50.00%	0.62%	40.05%	-41.10%	21.05%
RYCEY Rolls-Royce Holdings plc	14.16%	97.10%	100.63%	242.68%	-29.86%	10.20%	-83.53%	-10.72%	-3.00%	23.41%

Correlation

The correlation between ATO.PA and RYCEY is 0.15, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.15
Correlation (3Y) Calculated over the trailing 3-year period	0.05
Correlation (5Y) Calculated over the trailing 5-year period	0.14
Correlation (10Y) Calculated over the trailing 10-year period	0.18
Correlation (All Time) Calculated using the full available price history since Jul 7, 2014	0.21

The correlation between ATO.PA and RYCEY shifts across timeframes, from 0.05 (3 years) to 0.21 (all time), reflecting how their relationship changes across market environments.

Return for Risk

ATO.PA vs. RYCEY — Risk / Return Rank

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

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

RYCEY

RYCEY Risk / Return Rank: 77
RYCEY Sharpe Ratio Rank: 78
RYCEY Sortino Ratio Rank: 75
RYCEY Omega Ratio Rank: 73
RYCEY Calmar Ratio Rank: 78
RYCEY Martin Ratio Rank: 80

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.

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

This table presents a comparison of risk-adjusted performance metrics for Atos SE (ATO.PA) and Rolls-Royce Holdings plc (RYCEY). 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.

	ATO.PA	RYCEY	Difference
Sharpe ratio: Return per unit of total volatility	-0.18	1.27	-1.45
Sortino ratio: Return per unit of downside risk	0.16	1.93	-1.77
Omega ratio: Gain probability vs. loss probability	1.02	1.24	-0.22
Calmar ratio: Return relative to maximum drawdown	-0.23	2.30	-2.54
Martin ratio: Return relative to average drawdown	-0.42	6.24	-6.66

ATO.PA vs. RYCEY - Sharpe Ratio Comparison

The current ATO.PA Sharpe Ratio is -0.18, which is lower than the RYCEY Sharpe Ratio of 1.27. The chart below compares the historical Sharpe Ratios of ATO.PA and RYCEY, 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

ATO.PA vs. RYCEY - Drawdown Comparison

The maximum ATO.PA drawdown since its inception was -99.84%, roughly equal to the maximum RYCEY drawdown of -98.82%. Use the drawdown chart below to compare losses from any high point for ATO.PA and RYCEY.

Drawdown Indicators

	ATO.PA	RYCEY	Difference
Max Drawdown Largest peak-to-trough decline	-99.84%	-98.82%	-1.02%
Max Drawdown (1Y) Largest decline over 1 year	-46.73%	-20.20%	-26.53%
Max Drawdown (3Y) Largest decline over 3 years	-98.93%	-24.24%	-74.69%
Max Drawdown (5Y) Largest decline over 5 years	-99.71%	-54.75%	-44.96%
Max Drawdown (10Y) Largest decline over 10 years	-99.84%	-93.63%	-6.21%
Current Drawdown Current decline from peak	-99.53%	-76.23%	-23.30%
Average Drawdown Average peak-to-trough decline	-39.43%	-82.61%	+43.18%
Ulcer Index Depth and duration of drawdowns from previous peaks	25.93%	7.44%	+18.49%

Volatility

ATO.PA vs. RYCEY - Volatility Comparison

Atos SE (ATO.PA) has a higher volatility of 15.77% compared to Rolls-Royce Holdings plc (RYCEY) at 11.26%. This indicates that ATO.PA's price experiences larger fluctuations and is considered to be riskier than RYCEY based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ATO.PA	RYCEY	Difference
Volatility (1M) Calculated over the trailing 1-month period	15.77%	11.26%	+4.51%
Volatility (6M) Calculated over the trailing 6-month period	42.62%	31.46%	+11.16%
Volatility (1Y) Calculated over the trailing 1-year period	60.09%	36.63%	+23.46%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	126.50%	42.47%	+84.03%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	92.38%	48.79%	+43.59%

Dividends

ATO.PA vs. RYCEY - Dividend Comparison

ATO.PA has not paid dividends to shareholders, while RYCEY's dividend yield for the trailing twelve months is around 0.72%.

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%
RYCEY Rolls-Royce Holdings plc	0.72%	0.86%	0.00%	0.00%	0.00%	0.00%	5.51%	1.56%	1.32%	1.55%	4.19%	14.44%

Financials

Frequently Asked Questions

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

ATO.PA and RYCEY have a correlation of 0.15, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.