ZS vs. VOE

Last updated Jun 5, 2026

ZS (Zscaler, Inc.) is a stock, while VOE (Vanguard Mid-Cap Value ETF) is Mid Cap Value Equities fund tracking the CRSP US Mid Cap Value Index. Over the past 5 years, ZS returned -6.15%/yr vs 8.65%/yr for VOE. At a 0.28 correlation, their price movements are largely independent.

Performance

ZS vs. VOE - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Zscaler, Inc. (ZS) and Vanguard Mid-Cap Value ETF (VOE). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ZS achieves a -39.86% return, which is significantly lower than VOE's 11.76% return.

ZS

• 1D: 0.66%
• 1M: -4.32%
• YTD: -39.86%
• 6M: -44.07%
• 1Y: -54.43%
• 3Y*: -2.97%
• 5Y*: -6.15%
• 10Y*: —

VOE

• 1D: 0.91%
• 1M: 1.77%
• YTD: 11.76%
• 6M: 12.39%
• 1Y: 24.53%
• 3Y*: 17.01%
• 5Y*: 8.65%
• 10Y*: 10.58%

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

ZS vs. VOE - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
ZS Zscaler, Inc.	-39.86%	24.67%	-18.57%	98.00%	-65.18%	60.90%	329.48%	18.59%	18.82%
VOE Vanguard Mid-Cap Value ETF	11.76%	12.08%	14.00%	9.85%	-7.97%	28.78%	2.65%	27.85%	-13.44%

Correlation

The correlation between ZS and VOE is 0.06, 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	0.06
Correlation (3Y) Calculated over the trailing 3-year period	0.26
Correlation (5Y) Calculated over the trailing 5-year period	0.34
Correlation (All Time) Calculated using the full available price history since Mar 19, 2018	0.28

Over the past year, the correlation between ZS and VOE has dropped to 0.06 - well below their long-term average of 0.28, suggesting their price drivers have been diverging.

Return for Risk

ZS vs. VOE — Risk / Return Rank

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

ZS

ZS Risk / Return Rank: 7
ZS Sharpe Ratio Rank: 6
ZS Sortino Ratio Rank: 9
ZS Omega Ratio Rank: 6
ZS Calmar Ratio Rank: 9
ZS Martin Ratio Rank: 5

VOE

VOE Risk / Return Rank: 69
VOE Sharpe Ratio Rank: 66
VOE Sortino Ratio Rank: 69
VOE Omega Ratio Rank: 63
VOE Calmar Ratio Rank: 72
VOE Martin Ratio Rank: 73

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.

ZS vs. VOE - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Zscaler, Inc. (ZS) and Vanguard Mid-Cap Value ETF (VOE). 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.

	ZS	VOE	Difference
Sharpe ratio: Return per unit of total volatility	-0.93	2.15	-3.08
Sortino ratio: Return per unit of downside risk	-1.23	3.09	-4.31
Omega ratio: Gain probability vs. loss probability	0.81	1.38	-0.57
Calmar ratio: Return relative to maximum drawdown	-0.84	3.56	-4.40
Martin ratio: Return relative to average drawdown	-1.53	13.50	-15.03
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ZS vs. VOE - Sharpe Ratio Comparison

The current ZS Sharpe Ratio is -0.93, which is lower than the VOE Sharpe Ratio of 2.15. The chart below compares the historical Sharpe Ratios of ZS and VOE, 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

	ZS	VOE	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.93	2.15	-3.08
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.11	0.54	-0.65
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.56	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.32	0.44	-0.12

Drawdowns

ZS vs. VOE - Drawdown Comparison

The maximum ZS drawdown since its inception was -76.41%, which is greater than VOE's maximum drawdown of -61.50%. Use the drawdown chart below to compare losses from any high point for ZS and VOE.

Drawdown Indicators

	ZS	VOE	Difference
Max Drawdown Largest peak-to-trough decline	-76.41%	-61.50%	-14.91%
Max Drawdown (1Y) Largest decline over 1 year	-64.89%	-6.93%	-57.96%
Max Drawdown (3Y) Largest decline over 3 years	-64.89%	-18.45%	-46.44%
Max Drawdown (5Y) Largest decline over 5 years	-76.41%	-19.70%	-56.71%
Max Drawdown (10Y) Largest decline over 10 years	—	-43.18%	—
Current Drawdown Current decline from peak	-63.32%	0.00%	-63.32%
Average Drawdown Average peak-to-trough decline	-32.60%	-8.35%	-24.25%
Ulcer Index Depth and duration of drawdowns from previous peaks	35.64%	1.82%	+33.82%

Volatility

ZS vs. VOE - Volatility Comparison

Zscaler, Inc. (ZS) has a higher volatility of 45.55% compared to Vanguard Mid-Cap Value ETF (VOE) at 2.68%. This indicates that ZS's price experiences larger fluctuations and is considered to be riskier than VOE based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ZS	VOE	Difference
Volatility (1M) Calculated over the trailing 1-month period	45.55%	2.68%	+42.87%
Volatility (6M) Calculated over the trailing 6-month period	57.24%	8.16%	+49.08%
Volatility (1Y) Calculated over the trailing 1-year period	58.55%	11.48%	+47.07%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	56.10%	16.04%	+40.06%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	58.44%	18.83%	+39.61%

Dividends

ZS vs. VOE - Dividend Comparison

ZS has not paid dividends to shareholders, while VOE's dividend yield for the trailing twelve months is around 1.86%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
VOE Vanguard Mid-Cap Value ETF	1.86%	2.10%	2.11%	2.27%	2.27%	1.78%	2.36%	2.05%	2.75%	1.86%	1.92%	2.05%
ZS Zscaler, Inc.	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both ZS and VOE in my portfolio?

ZS and VOE have a correlation of 0.06, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ZS or VOE?

ZS has higher volatility (45.55%) compared to VOE (2.68%). In terms of maximum drawdown, ZS dropped -76.41% vs VOE's -61.50%.

Which has better risk-adjusted returns?

VOE currently has the higher Sharpe Ratio (2.15 vs -0.93), 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.