VEXMX vs. BOTZ

Last updated Aug 1, 2026

VEXMX (Vanguard Extended Market Index Fund) and BOTZ (Global X Robotics & Artificial Intelligence Thematic ETF) are both funds - VEXMX is a Mid Cap Growth Equities fund managed by Vanguard, while BOTZ is a Artificial Intelligence fund tracking the Indxx Global Robotics & Artificial Intelligence Thematic Index. Over the past 5 years, VEXMX returned 5.93%/yr vs 0.96%/yr for BOTZ. Their 0.79 correlation means they have sometimes moved together and sometimes differently. VEXMX charges 0.19%/yr vs 0.68%/yr for BOTZ.

Performance

VEXMX vs. BOTZ - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard Extended Market Index Fund (VEXMX) and Global X Robotics & Artificial Intelligence Thematic ETF (BOTZ). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, VEXMX achieves a 13.88% return, which is significantly higher than BOTZ's -2.74% return.

VEXMX

• 1D: 1.41%
• 1M: -2.64%
• 6M: 11.23%
• YTD: 13.88%
• 1Y: 23.60%
• 3Y*: 15.61%
• 5Y*: 5.93%
• 10Y*: 11.46%
• ALL TIME*: 10.81%

BOTZ

• 1D: 0.92%
• 1M: -5.80%
• 6M: -5.58%
• YTD: -2.74%
• 1Y: 6.85%
• 3Y*: 7.34%
• 5Y*: 0.96%
• 10Y*: —
• ALL TIME*: 9.66%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
BOTZ Global X Robotics & Artificial Intelligence Thematic ETF	$28.68M	$29.79M	$37.55M
VEXMX Vanguard Extended Market Index Fund	$0.00	$0.00	$0.00

VEXMX vs. BOTZ - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VEXMX Vanguard Extended Market Index Fund	13.88%	10.93%	15.05%	26.79%	-26.56%	12.31%	32.43%	27.87%	-9.48%	17.94%
BOTZ Global X Robotics & Artificial Intelligence Thematic ETF	-2.74%	14.17%	12.26%	38.97%	-42.69%	8.65%	51.92%	31.80%	-28.34%	58.01%

Correlation

The correlation between VEXMX and BOTZ is 0.76, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.76
Correlation (3Y) Balances recent behavior with more history.	0.78
Correlation (5Y) Shows whether the relationship held over a longer period.	0.83
Correlation (All Time) Calculated using the full available price history since Sep 13, 2016	0.79

The correlation between VEXMX and BOTZ has been stable across timeframes, ranging from 0.76 to 0.83 - a consistent structural relationship.

Return for Risk

VEXMX vs. BOTZ — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

VEXMX

VEXMX Risk / Return Rank: 45
VEXMX Sharpe Ratio Rank: 39
VEXMX Sortino Ratio Rank: 40
VEXMX Omega Ratio Rank: 36
VEXMX Calmar Ratio Rank: 60
VEXMX Martin Ratio Rank: 50

BOTZ

BOTZ Risk / Return Rank: 16
BOTZ Sharpe Ratio Rank: 16
BOTZ Sortino Ratio Rank: 16
BOTZ Omega Ratio Rank: 16
BOTZ Calmar Ratio Rank: 16
BOTZ Martin Ratio Rank: 16

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

VEXMX vs. BOTZ - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Extended Market Index Fund (VEXMX) and Global X Robotics & Artificial Intelligence Thematic ETF (BOTZ). 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.

	VEXMX	BOTZ	Difference
Sharpe ratio: Return per unit of total volatility	1.15	0.22	+0.94
Sortino ratio: Return per unit of downside risk	1.70	0.49	+1.21
Omega ratio: Gain probability vs. loss probability	1.20	1.06	+0.15
Calmar ratio: Return relative to maximum drawdown	2.00	0.30	+1.70
Martin ratio: Return relative to average drawdown	6.79	0.76	+6.03

VEXMX vs. BOTZ - Sharpe Ratio Comparison

The current VEXMX Sharpe Ratio is 1.15, which is higher than the BOTZ Sharpe Ratio of 0.22. The chart below compares the historical Sharpe Ratios of VEXMX and BOTZ, 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

VEXMX vs. BOTZ - Drawdown Comparison

The maximum VEXMX drawdown since its inception was -58.17%, roughly equal to the maximum BOTZ drawdown of -55.54%. Use the drawdown chart below to compare losses from any high point for VEXMX and BOTZ.

Drawdown Indicators

	VEXMX	BOTZ	Difference
Max Drawdown Largest peak-to-trough decline	-58.17%	-55.54%	-2.63%
Max Drawdown (1Y) Largest decline over 1 year	-10.27%	-19.34%	+9.07%
Max Drawdown (3Y) Largest decline over 3 years	-27.09%	-29.02%	+1.93%
Max Drawdown (5Y) Largest decline over 5 years	-36.38%	-55.54%	+19.16%
Max Drawdown (10Y) Largest decline over 10 years	-41.63%	—	—
Current Drawdown Current decline from peak	-3.76%	-15.36%	+11.60%
Average Drawdown Average peak-to-trough decline	-11.11%	-18.22%	+7.11%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.02%	7.59%	-4.57%

Volatility

VEXMX vs. BOTZ - Volatility Comparison

The current volatility for Vanguard Extended Market Index Fund (VEXMX) is 3.90%, while Global X Robotics & Artificial Intelligence Thematic ETF (BOTZ) has a volatility of 9.07%. This indicates that VEXMX experiences smaller price fluctuations and is considered to be less risky than BOTZ based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VEXMX	BOTZ	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.90%	9.07%	-5.17%
Volatility (6M) Calculated over the trailing 6-month period	13.31%	21.63%	-8.32%
Volatility (1Y) Calculated over the trailing 1-year period	17.80%	26.37%	-8.57%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	22.41%	27.27%	-4.86%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.37%	25.88%	-3.51%

VEXMX vs. BOTZ - Expense Ratio Comparison

VEXMX has a 0.19% expense ratio, which is lower than BOTZ's 0.68% expense ratio.

Dividends

VEXMX vs. BOTZ - Dividend Comparison

VEXMX's dividend yield for the trailing twelve months is around 0.90%, more than BOTZ's 0.50% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BOTZ Global X Robotics & Artificial Intelligence Thematic ETF	0.50%	0.66%	0.13%	0.20%	0.23%	0.16%	0.19%	0.83%	1.44%	0.01%	0.06%	0.00%
VEXMX Vanguard Extended Market Index Fund	0.90%	0.74%	0.74%	1.14%	1.00%	0.99%	1.19%	1.18%	1.52%	1.12%	1.31%	1.20%

Frequently Asked Questions

Can I hold both VEXMX and BOTZ in my portfolio?

VEXMX and BOTZ have a correlation of 0.76, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, VEXMX or BOTZ?

BOTZ has higher volatility (9.07%) compared to VEXMX (3.90%). In terms of maximum drawdown, VEXMX dropped -58.17% vs BOTZ's -55.54%.

Which has better risk-adjusted returns?

VEXMX currently has the higher Sharpe Ratio (1.15 vs 0.22), 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.