BAYN.DE vs. ^GSPC

Last updated Apr 2, 2026

Compare and contrast key facts about Bayer Aktiengesellschaft (BAYN.DE) and S&P 500 Index (^GSPC).

Performance

BAYN.DE vs. ^GSPC - Performance Comparison

The chart below illustrates the hypothetical performance of a €10,000 investment in Bayer Aktiengesellschaft (BAYN.DE) and S&P 500 Index (^GSPC). The values are adjusted to include any dividend payments, if applicable.

BAYN.DE vs. ^GSPC - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
BAYN.DE Bayer Aktiengesellschaft	8.40%	92.54%	-42.34%	-27.50%	6.20%	1.34%	-30.79%	25.96%	-39.17%	7.50%
^GSPC S&P 500 Index	-2.47%	2.58%	31.45%	20.51%	-14.45%	36.38%	6.68%	31.79%	-1.84%	4.74%

Different Trading Currencies

BAYN.DE is traded in EUR, while ^GSPC is traded in USD. To make them comparable, the ^GSPC values have been converted to EUR using the latest available exchange rates.

Returns By Period

In the year-to-date period, BAYN.DE achieves a 8.40% return, which is significantly higher than ^GSPC's -2.47% return. Over the past 10 years, BAYN.DE has underperformed ^GSPC with an annualized return of -6.01%, while ^GSPC has yielded a comparatively higher 12.07% annualized return.

BAYN.DE

• 1D: 1.87%
• 1M: -1.21%
• YTD: 8.40%
• 6M: 35.36%
• 1Y: 80.65%
• 3Y*: -10.45%
• 5Y*: -3.21%
• 10Y*: -6.01%

^GSPC

• 1D: 0.61%
• 1M: -3.45%
• YTD: -2.47%
• 6M: -0.63%
• 1Y: 8.91%
• 3Y*: 14.47%
• 5Y*: 10.74%
• 10Y*: 12.07%

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

Return for Risk

BAYN.DE vs. ^GSPC — Risk / Return Rank

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

BAYN.DE

BAYN.DE Risk / Return Rank: 88
BAYN.DE Sharpe Ratio Rank: 90
BAYN.DE Sortino Ratio Rank: 87
BAYN.DE Omega Ratio Rank: 87
BAYN.DE Calmar Ratio Rank: 87
BAYN.DE Martin Ratio Rank: 89

^GSPC

^GSPC Risk / Return Rank: 67
^GSPC Sharpe Ratio Rank: 63
^GSPC Sortino Ratio Rank: 64
^GSPC Omega Ratio Rank: 69
^GSPC Calmar Ratio Rank: 60
^GSPC Martin Ratio Rank: 77

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.

BAYN.DE vs. ^GSPC - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Bayer Aktiengesellschaft (BAYN.DE) and S&P 500 Index (^GSPC). 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.

	BAYN.DE	^GSPC	Difference
Sharpe ratio Return per unit of total volatility	2.00	0.43	+1.57
Sortino ratio Return per unit of downside risk	2.62	0.73	+1.89
Omega ratio Gain probability vs. loss probability	1.36	1.12	+0.24
Calmar ratio Return relative to maximum drawdown	3.36	0.66	+2.70
Martin ratio Return relative to average drawdown	10.66	2.77	+7.90
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

BAYN.DE vs. ^GSPC - Sharpe Ratio Comparison

The current BAYN.DE Sharpe Ratio is 2.00, which is higher than the ^GSPC Sharpe Ratio of 0.43. The chart below compares the historical Sharpe Ratios of BAYN.DE and ^GSPC, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	BAYN.DE	^GSPC	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.00	0.43	+1.57
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.10	0.64	-0.74
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	-0.19	0.65	-0.84
Sharpe Ratio (All Time) Calculated using the full available price history	0.16	0.45	-0.29

Correlation

The correlation between BAYN.DE and ^GSPC is 0.31, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.

Drawdowns

BAYN.DE vs. ^GSPC - Drawdown Comparison

The maximum BAYN.DE drawdown since its inception was -82.29%, which is greater than ^GSPC's maximum drawdown of -53.11%. Use the drawdown chart below to compare losses from any high point for BAYN.DE and ^GSPC.

Drawdown Indicators

	BAYN.DE	^GSPC	Difference
Max Drawdown Largest peak-to-trough decline	-82.29%	-56.78%	-25.51%
Max Drawdown (1Y) Largest decline over 1 year	-26.21%	-12.14%	-14.07%
Max Drawdown (5Y) Largest decline over 5 years	-70.42%	-25.43%	-44.99%
Max Drawdown (10Y) Largest decline over 10 years	-80.34%	-33.92%	-46.42%
Current Drawdown Current decline from peak	-62.16%	-5.78%	-56.38%
Average Drawdown Average peak-to-trough decline	-29.16%	-10.75%	-18.41%
Ulcer Index Depth and duration of drawdowns from previous peaks	8.27%	2.60%	+5.67%

Volatility

BAYN.DE vs. ^GSPC - Volatility Comparison

Bayer Aktiengesellschaft (BAYN.DE) has a higher volatility of 10.40% compared to S&P 500 Index (^GSPC) at 4.42%. This indicates that BAYN.DE's price experiences larger fluctuations and is considered to be riskier than ^GSPC based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BAYN.DE	^GSPC	Difference
Volatility (1M) Calculated over the trailing 1-month period	10.40%	4.42%	+5.98%
Volatility (6M) Calculated over the trailing 6-month period	30.74%	9.93%	+20.81%
Volatility (1Y) Calculated over the trailing 1-year period	40.04%	20.69%	+19.35%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	32.30%	16.81%	+15.49%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	31.15%	18.63%	+12.52%