FNX vs. VO

Last updated Jun 23, 2026

FNX (First Trust Mid Cap Core AlphaDEX Fund) and VO (Vanguard Mid-Cap ETF) are both Mid Cap Blend Equities funds - FNX tracks the NASDAQ AlphaDEX Mid Cap Core Index while VO tracks the CRSP US Mid Cap Index. Both are passively managed. Over the past 10 years, FNX returned 12.51%/yr vs 12.03%/yr for VO. Their correlation of 0.91 suggests significant overlap in exposure. FNX charges 0.60%/yr vs 0.03%/yr for VO.

Performance

FNX vs. VO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in First Trust Mid Cap Core AlphaDEX Fund (FNX) and Vanguard Mid-Cap ETF (VO). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FNX achieves a 14.46% return, which is significantly higher than VO's 11.30% return. Both investments have delivered pretty close results over the past 10 years, with FNX having a 12.51% annualized return and VO not far behind at 12.03%.

FNX

• 1D: 0.48%
• 1M: 3.65%
• YTD: 14.46%
• 6M: 11.83%
• 1Y: 29.14%
• 3Y*: 17.41%
• 5Y*: 9.06%
• 10Y*: 12.51%

VO

• 1D: 0.44%
• 1M: 3.04%
• YTD: 11.30%
• 6M: 9.77%
• 1Y: 19.89%
• 3Y*: 16.59%
• 5Y*: 8.06%
• 10Y*: 12.03%

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

FNX vs. VO - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FNX First Trust Mid Cap Core AlphaDEX Fund	14.46%	9.87%	12.21%	20.39%	-13.57%	25.05%	16.04%	26.97%	-11.23%	17.66%
VO Vanguard Mid-Cap ETF	11.30%	11.62%	15.31%	16.03%	-18.73%	24.70%	18.10%	30.98%	-9.24%	19.28%

Correlation

The correlation between FNX and VO is 0.91, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.91
Correlation (3Y) Calculated over the trailing 3-year period	0.93
Correlation (5Y) Calculated over the trailing 5-year period	0.94
Correlation (10Y) Calculated over the trailing 10-year period	0.94
Correlation (All Time) Calculated using the full available price history since May 10, 2007	0.91

The correlation between FNX and VO has been stable across timeframes, ranging from 0.91 to 0.94 - a consistent structural relationship.

FNX vs. VO - Sectors Allocation Comparison

Sectors	FNX	VO
Financial Services	18.7%	12.5%
Industrials	18.2%	17.7%
Consumer Cyclical	15.4%	8.6%
Technology	13.3%	20.8%
Healthcare	10.1%	7.5%
Real Estate	7.1%	5.1%
Energy	5.7%	7.9%
Basic Materials	3.2%	4.0%
Consumer Defensive	3.2%	4.7%
Utilities	2.8%	7.9%
Communication Services	2.4%	3.0%

Return for Risk

FNX vs. VO — Risk / Return Rank

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

FNX

FNX Risk / Return Rank: 58
FNX Sharpe Ratio Rank: 54
FNX Sortino Ratio Rank: 56
FNX Omega Ratio Rank: 50
FNX Calmar Ratio Rank: 66
FNX Martin Ratio Rank: 63

VO

VO Risk / Return Rank: 48
VO Sharpe Ratio Rank: 46
VO Sortino Ratio Rank: 46
VO Omega Ratio Rank: 43
VO Calmar Ratio Rank: 51
VO Martin Ratio Rank: 55

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.

FNX vs. VO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for First Trust Mid Cap Core AlphaDEX Fund (FNX) and Vanguard Mid-Cap ETF (VO). 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.

	FNX	VO	Difference
Sharpe ratio: Return per unit of total volatility	1.79	1.56	+0.22
Sortino ratio: Return per unit of downside risk	2.60	2.23	+0.37
Omega ratio: Gain probability vs. loss probability	1.31	1.27	+0.03
Calmar ratio: Return relative to maximum drawdown	3.17	2.45	+0.72
Martin ratio: Return relative to average drawdown	10.89	9.23	+1.66

FNX vs. VO - Sharpe Ratio Comparison

The current FNX Sharpe Ratio is 1.79, which is comparable to the VO Sharpe Ratio of 1.56. The chart below compares the historical Sharpe Ratios of FNX and VO, 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

FNX vs. VO - Drawdown Comparison

The maximum FNX drawdown since its inception was -57.11%, roughly equal to the maximum VO drawdown of -58.87%. Use the drawdown chart below to compare losses from any high point for FNX and VO.

Drawdown Indicators

	FNX	VO	Difference
Max Drawdown Largest peak-to-trough decline	-57.11%	-58.87%	+1.76%
Max Drawdown (1Y) Largest decline over 1 year	-9.24%	-8.17%	-1.07%
Max Drawdown (3Y) Largest decline over 3 years	-24.97%	-19.02%	-5.95%
Max Drawdown (5Y) Largest decline over 5 years	-24.97%	-27.57%	+2.60%
Max Drawdown (10Y) Largest decline over 10 years	-43.95%	-39.37%	-4.58%
Current Drawdown Current decline from peak	0.00%	-0.45%	+0.45%
Average Drawdown Average peak-to-trough decline	-8.38%	-7.85%	-0.53%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.68%	2.16%	+0.52%

Volatility

FNX vs. VO - Volatility Comparison

First Trust Mid Cap Core AlphaDEX Fund (FNX) and Vanguard Mid-Cap ETF (VO) have volatilities of 4.52% and 4.35%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FNX	VO	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.52%	4.35%	+0.17%
Volatility (6M) Calculated over the trailing 6-month period	11.70%	9.80%	+1.90%
Volatility (1Y) Calculated over the trailing 1-year period	16.41%	12.80%	+3.61%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	20.51%	17.66%	+2.85%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.99%	18.98%	+3.01%

FNX vs. VO - Expense Ratio Comparison

FNX has a 0.60% expense ratio, which is higher than VO's 0.03% expense ratio.

Dividends

FNX vs. VO - Dividend Comparison

FNX's dividend yield for the trailing twelve months is around 0.81%, less than VO's 1.35% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FNX First Trust Mid Cap Core AlphaDEX Fund	0.81%	0.88%	1.26%	1.11%	1.19%	0.94%	1.04%	1.21%	1.01%	0.90%	1.07%	1.07%
VO Vanguard Mid-Cap ETF	1.35%	1.52%	1.49%	1.52%	1.60%	1.12%	1.45%	1.48%	1.82%	1.35%	1.45%	1.47%

Frequently Asked Questions

Can I hold both FNX and VO in my portfolio?

With a correlation of 0.91, FNX and VO move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, FNX or VO?

FNX has higher volatility (4.52%) compared to VO (4.35%). In terms of maximum drawdown, FNX dropped -57.11% vs VO's -58.87%.

Which ETF is better, FNX or VO?

On 10-year performance, FNX leads with 12.51% vs 12.03% for VO. On fees, VO is cheaper at 0.03% per year. On volatility, VO has been the lower-risk option at 4.35%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, FNX or VO?

Over the 10-year period, FNX has performed better with a 12.51% return vs 12.03%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, FNX or VO?

VO is cheaper with a 0.03% expense ratio, compared with 0.60% for FNX.

Which ETF pays a higher dividend yield, FNX or VO?

VO has the higher dividend yield at 1.35%, compared with 0.81% for FNX.

What is the main difference between FNX and VO?

FNX tracks NASDAQ AlphaDEX Mid Cap Core Index, while VO tracks CRSP US Mid Cap Index. They also come from different issuers: First Trust and Vanguard. Their fees differ too: 0.60% for FNX and 0.03% for VO.

Which has better risk-adjusted returns?

FNX currently has the higher Sharpe Ratio (1.79 vs 1.56), 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.