SDF.DE vs. CNR

Last updated Jun 5, 2026

SDF.DE (K+S Aktiengesellschaft) and CNR (Core Natural Resources, Inc) are both stocks. SDF.DE operates in Agricultural Inputs (Basic Materials), while CNR operates in Thermal Coal (Energy). Over the past 5 years, SDF.DE returned 6.64%/yr vs 44.86%/yr for CNR. At a 0.20 correlation, their price movements are largely independent.

Performance

SDF.DE vs. CNR - Performance Comparison

The chart below illustrates the hypothetical performance of a €10,000 investment in K+S Aktiengesellschaft (SDF.DE) and Core Natural Resources, Inc (CNR). The values are adjusted to include any dividend payments, if applicable.

Different Trading Currencies

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

Returns By Period

In the year-to-date period, SDF.DE achieves a 15.66% return, which is significantly higher than CNR's 7.89% return.

SDF.DE

• 1D: -2.59%
• 1M: -8.09%
• YTD: 15.66%
• 6M: 20.61%
• 1Y: -13.10%
• 3Y*: -0.49%
• 5Y*: 6.64%
• 10Y*: -1.72%

CNR

• 1D: -4.77%
• 1M: 8.68%
• YTD: 7.89%
• 6M: 13.65%
• 1Y: 41.33%
• 3Y*: 12.48%
• 5Y*: 44.86%
• 10Y*: —

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

SDF.DE vs. CNR - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
SDF.DE K+S Aktiengesellschaft	15.66%	19.93%	-23.13%	-17.50%	21.87%	94.98%	-27.47%	-28.25%	-22.24%	1.02%
CNR Core Natural Resources, Inc	7.89%	-26.48%	13.63%	55.84%	213.83%	238.54%	-54.41%	-53.21%	-15.97%	74.53%

Correlation

The correlation between SDF.DE and CNR 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	0.12
Correlation (5Y) Calculated over the trailing 5-year period	0.17
Correlation (All Time) Calculated using the full available price history since Nov 15, 2017	0.20

Return for Risk

SDF.DE vs. CNR — Risk / Return Rank

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

SDF.DE

SDF.DE Risk / Return Rank: 26
SDF.DE Sharpe Ratio Rank: 24
SDF.DE Sortino Ratio Rank: 23
SDF.DE Omega Ratio Rank: 23
SDF.DE Calmar Ratio Rank: 29
SDF.DE Martin Ratio Rank: 30

CNR

CNR Risk / Return Rank: 67
CNR Sharpe Ratio Rank: 68
CNR Sortino Ratio Rank: 66
CNR Omega Ratio Rank: 62
CNR Calmar Ratio Rank: 70
CNR Martin Ratio Rank: 68

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.

SDF.DE vs. CNR - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for K+S Aktiengesellschaft (SDF.DE) and Core Natural Resources, Inc (CNR). 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.

	SDF.DE	CNR	Difference
Sharpe ratio: Return per unit of total volatility	-0.39	0.83	-1.21
Sortino ratio: Return per unit of downside risk	-0.33	1.46	-1.79
Omega ratio: Gain probability vs. loss probability	0.95	1.17	-0.21
Calmar ratio: Return relative to maximum drawdown	-0.38	1.46	-1.84
Martin ratio: Return relative to average drawdown	-0.61	2.90	-3.51
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SDF.DE vs. CNR - Sharpe Ratio Comparison

The current SDF.DE Sharpe Ratio is -0.39, which is lower than the CNR Sharpe Ratio of 0.83. The chart below compares the historical Sharpe Ratios of SDF.DE and CNR, 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

	SDF.DE	CNR	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.39	0.83	-1.21
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.17	0.82	-0.65
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	-0.04	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.24	0.30	-0.06

Drawdowns

SDF.DE vs. CNR - Drawdown Comparison

The maximum SDF.DE drawdown since its inception was -92.29%, roughly equal to the maximum CNR drawdown of -92.07%. Use the drawdown chart below to compare losses from any high point for SDF.DE and CNR.

Drawdown Indicators

	SDF.DE	CNR	Difference
Max Drawdown Largest peak-to-trough decline	-92.29%	-92.07%	-0.22%
Max Drawdown (1Y) Largest decline over 1 year	-35.96%	-28.50%	-7.46%
Max Drawdown (3Y) Largest decline over 3 years	-41.68%	-56.35%	+14.67%
Max Drawdown (5Y) Largest decline over 5 years	-68.08%	-56.35%	-11.73%
Max Drawdown (10Y) Largest decline over 10 years	-79.24%	—	—
Current Drawdown Current decline from peak	-74.99%	-35.66%	-39.33%
Average Drawdown Average peak-to-trough decline	-46.63%	-37.63%	-9.00%
Ulcer Index Depth and duration of drawdowns from previous peaks	22.49%	14.30%	+8.19%

Volatility

SDF.DE vs. CNR - Volatility Comparison

The current volatility for K+S Aktiengesellschaft (SDF.DE) is 6.50%, while Core Natural Resources, Inc (CNR) has a volatility of 14.14%. This indicates that SDF.DE experiences smaller price fluctuations and is considered to be less risky than CNR based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SDF.DE	CNR	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.50%	14.14%	-7.64%
Volatility (6M) Calculated over the trailing 6-month period	29.78%	33.86%	-4.08%
Volatility (1Y) Calculated over the trailing 1-year period	35.71%	50.26%	-14.55%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	37.92%	54.73%	-16.81%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	38.83%	67.07%	-28.24%

Dividends

SDF.DE vs. CNR - Dividend Comparison

SDF.DE's dividend yield for the trailing twelve months is around 0.49%, more than CNR's 0.43% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
CNR Core Natural Resources, Inc	0.43%	0.45%	0.47%	2.19%	3.15%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
SDF.DE K+S Aktiengesellschaft	0.49%	1.21%	6.69%	6.99%	1.09%	0.00%	2.44%	2.25%	4.17%	1.45%	5.07%	3.81%

Financials

Frequently Asked Questions

Can I hold both SDF.DE and CNR in my portfolio?

SDF.DE and CNR 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.