ZSTK vs. COVTY

Last updated Jun 26, 2026

ZSTK (ZeroStack Corp.) and COVTY (Covestro ADR) are both stocks. ZSTK operates in Asset Management (Financial Services), while COVTY operates in Specialty Chemicals (Basic Materials). Over the past 5 years, ZSTK returned -74.05%/yr vs 2.12%/yr for COVTY. At a 0.12 correlation, their price movements are largely independent.

Performance

ZSTK vs. COVTY - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in ZeroStack Corp. (ZSTK) and Covestro ADR (COVTY). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ZSTK achieves a -43.29% return, which is significantly lower than COVTY's -1.07% return.

ZSTK

• 1D: -0.14%
• 1M: -20.31%
• YTD: -43.29%
• 6M: -51.73%
• 1Y: -86.31%
• 3Y*: -68.38%
• 5Y*: -74.05%
• 10Y*: —

COVTY

• 1D: -1.13%
• 1M: -4.44%
• YTD: -1.07%
• 6M: -3.32%
• 1Y: -5.88%
• 3Y*: 7.00%
• 5Y*: 2.12%
• 10Y*: —

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

ZSTK vs. COVTY - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
ZSTK ZeroStack Corp.	-43.29%	-84.42%	-23.70%	-70.34%	-87.21%	-67.64%
COVTY Covestro ADR	-1.07%	15.75%	-0.88%	50.21%	-31.89%	-12.59%

Correlation

The correlation between ZSTK and COVTY is 0.04, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.04
Correlation (3Y) Calculated over the trailing 3-year period	0.07
Correlation (5Y) Calculated over the trailing 5-year period	0.13
Correlation (All Time) Calculated using the full available price history since May 11, 2021	0.12

Fundamentals

EPS ZSTK : -$221.74 COVTY : -€1.69
PS Ratio ZSTK : 0.08 COVTY : 0.86
Total Revenue (TTM) ZSTK : $23.89M COVTY : €12.91B
Gross Profit (TTM) ZSTK : -$7.71M COVTY : €1.71B
EBITDA (TTM) ZSTK : -$9.88M COVTY : €733.54M

Return for Risk

ZSTK vs. COVTY — Risk / Return Rank

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

ZSTK

ZSTK Risk / Return Rank: 12
ZSTK Sharpe Ratio Rank: 17
ZSTK Sortino Ratio Rank: 12
ZSTK Omega Ratio Rank: 13
ZSTK Calmar Ratio Rank: 3
ZSTK Martin Ratio Rank: 13

COVTY

COVTY Risk / Return Rank: 24
COVTY Sharpe Ratio Rank: 33
COVTY Sortino Ratio Rank: 29
COVTY Omega Ratio Rank: 28
COVTY Calmar Ratio Rank: 23
COVTY Martin Ratio Rank: 9

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.

ZSTK vs. COVTY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for ZeroStack Corp. (ZSTK) and Covestro ADR (COVTY). 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.

	ZSTK	COVTY	Difference
Sharpe ratio: Return per unit of total volatility	-0.60	-0.24	-0.36
Sortino ratio: Return per unit of downside risk	-1.04	-0.17	-0.88
Omega ratio: Gain probability vs. loss probability	0.88	0.98	-0.10
Calmar ratio: Return relative to maximum drawdown	-0.97	-0.58	-0.39
Martin ratio: Return relative to average drawdown	-1.30	-1.43	+0.13

ZSTK vs. COVTY - Sharpe Ratio Comparison

The current ZSTK Sharpe Ratio is -0.60, which is lower than the COVTY Sharpe Ratio of -0.24. The chart below compares the historical Sharpe Ratios of ZSTK and COVTY, 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

ZSTK vs. COVTY - Drawdown Comparison

The maximum ZSTK drawdown since its inception was -99.97%, which is greater than COVTY's maximum drawdown of -77.54%. Use the drawdown chart below to compare losses from any high point for ZSTK and COVTY.

Drawdown Indicators

	ZSTK	COVTY	Difference
Max Drawdown Largest peak-to-trough decline	-99.97%	-77.54%	-22.43%
Max Drawdown (1Y) Largest decline over 1 year	-89.41%	-10.23%	-79.18%
Max Drawdown (3Y) Largest decline over 3 years	-97.62%	-16.19%	-81.43%
Max Drawdown (5Y) Largest decline over 5 years	-99.97%	-56.79%	-43.18%
Current Drawdown Current decline from peak	-99.97%	-35.62%	-64.35%
Average Drawdown Average peak-to-trough decline	-92.50%	-42.01%	-50.49%
Ulcer Index Depth and duration of drawdowns from previous peaks	66.18%	4.11%	+62.07%

Volatility

ZSTK vs. COVTY - Volatility Comparison

ZeroStack Corp. (ZSTK) has a higher volatility of 24.29% compared to Covestro ADR (COVTY) at 7.73%. This indicates that ZSTK's price experiences larger fluctuations and is considered to be riskier than COVTY based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ZSTK	COVTY	Difference
Volatility (1M) Calculated over the trailing 1-month period	24.29%	7.73%	+16.56%
Volatility (6M) Calculated over the trailing 6-month period	108.09%	18.66%	+89.43%
Volatility (1Y) Calculated over the trailing 1-year period	145.01%	24.60%	+120.41%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	137.74%	30.84%	+106.90%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	137.11%	34.33%	+102.78%

Dividends

ZSTK vs. COVTY - Dividend Comparison

Neither ZSTK nor COVTY has paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
COVTY Covestro ADR	0.00%	0.00%	0.00%	0.00%	9.64%	2.53%	2.23%	4.26%	3.92%	2.44%
ZSTK ZeroStack Corp.	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Financials

Frequently Asked Questions

Can I hold both ZSTK and COVTY in my portfolio?

ZSTK and COVTY have a correlation of 0.04, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ZSTK or COVTY?

ZSTK has higher volatility (24.29%) compared to COVTY (7.73%). In terms of maximum drawdown, ZSTK dropped -99.97% vs COVTY's -77.54%.

Which has better risk-adjusted returns?

COVTY currently has the higher Sharpe Ratio (-0.24 vs -0.60), 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.