BEXIX vs. BIOPX

Last updated Aug 1, 2026

BEXIX (Baron Emerging Markets Fund) and BIOPX (Baron Opportunity Fund) are both mutual funds - BEXIX is a Emerging Markets Equities fund managed by Baron Capital, while BIOPX is a Large Cap Growth Equities fund managed by Baron Capital. Over the past 10 years, BEXIX returned 6.94%/yr vs 20.20%/yr for BIOPX. Their 0.61 correlation means they have sometimes moved together and sometimes differently. BEXIX charges 1.12%/yr vs 1.31%/yr for BIOPX.

Performance

BEXIX vs. BIOPX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Baron Emerging Markets Fund (BEXIX) and Baron Opportunity Fund (BIOPX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, BEXIX achieves a 10.61% return, which is significantly higher than BIOPX's 3.65% return. Over the past 10 years, BEXIX has underperformed BIOPX with an annualized return of 6.94%, while BIOPX has yielded a comparatively higher 20.20% annualized return.

BEXIX

• 1D: 3.47%
• 1M: -3.56%
• 6M: 3.83%
• YTD: 10.61%
• 1Y: 23.93%
• 3Y*: 14.52%
• 5Y*: 3.50%
• 10Y*: 6.94%
• ALL TIME*: 5.65%

BIOPX

• 1D: 2.06%
• 1M: -8.28%
• 6M: 7.24%
• YTD: 3.65%
• 1Y: 13.16%
• 3Y*: 22.14%
• 5Y*: 8.58%
• 10Y*: 20.20%
• ALL TIME*: 10.31%

*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)
BEXIX Baron Emerging Markets Fund	$0.00	$0.00	$0.00
BIOPX Baron Opportunity Fund	$0.00	$0.00	$0.00

BEXIX vs. BIOPX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
BEXIX Baron Emerging Markets Fund	10.61%	30.11%	7.91%	8.29%	-25.82%	-6.06%	29.71%	18.85%	-18.48%	40.63%
BIOPX Baron Opportunity Fund	3.65%	19.44%	39.87%	49.55%	-42.96%	11.90%	88.78%	40.34%	8.06%	40.58%

Correlation

The correlation between BEXIX and BIOPX is 0.69, 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.	0.69
Correlation (3Y) Balances recent behavior with more history.	0.60
Correlation (5Y) Shows whether the relationship held over a longer period.	0.63
Correlation (10Y) Provides a long-term view across more market conditions.	0.62
Correlation (All Time) Calculated using the full available price history since Jan 4, 2011	0.61

The correlation between BEXIX and BIOPX has been stable across timeframes, ranging from 0.60 to 0.69 - a consistent structural relationship.

Return for Risk

BEXIX vs. BIOPX — Risk / Return Rank

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

BEXIX

BEXIX Risk / Return Rank: 31
BEXIX Sharpe Ratio Rank: 27
BEXIX Sortino Ratio Rank: 26
BEXIX Omega Ratio Rank: 30
BEXIX Calmar Ratio Rank: 40
BEXIX Martin Ratio Rank: 31

BIOPX

BIOPX Risk / Return Rank: 15
BIOPX Sharpe Ratio Rank: 13
BIOPX Sortino Ratio Rank: 15
BIOPX Omega Ratio Rank: 14
BIOPX Calmar Ratio Rank: 16
BIOPX 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.

BEXIX vs. BIOPX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Baron Emerging Markets Fund (BEXIX) and Baron Opportunity Fund (BIOPX). 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.

	BEXIX	BIOPX	Difference
Sharpe ratio: Return per unit of total volatility	0.94	0.50	+0.44
Sortino ratio: Return per unit of downside risk	1.35	0.86	+0.49
Omega ratio: Gain probability vs. loss probability	1.19	1.10	+0.08
Calmar ratio: Return relative to maximum drawdown	1.65	0.75	+0.89
Martin ratio: Return relative to average drawdown	4.67	2.11	+2.56

BEXIX vs. BIOPX - Sharpe Ratio Comparison

The current BEXIX Sharpe Ratio is 0.94, which is higher than the BIOPX Sharpe Ratio of 0.50. The chart below compares the historical Sharpe Ratios of BEXIX and BIOPX, 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

BEXIX vs. BIOPX - Drawdown Comparison

The maximum BEXIX drawdown since its inception was -45.58%, smaller than the maximum BIOPX drawdown of -67.91%. Use the drawdown chart below to compare losses from any high point for BEXIX and BIOPX.

Drawdown Indicators

	BEXIX	BIOPX	Difference
Max Drawdown Largest peak-to-trough decline	-45.58%	-67.91%	+22.33%
Max Drawdown (1Y) Largest decline over 1 year	-13.60%	-14.31%	+0.71%
Max Drawdown (3Y) Largest decline over 3 years	-16.63%	-26.34%	+9.71%
Max Drawdown (5Y) Largest decline over 5 years	-40.16%	-51.45%	+11.29%
Max Drawdown (10Y) Largest decline over 10 years	-45.58%	-51.45%	+5.87%
Current Drawdown Current decline from peak	-10.60%	-12.55%	+1.95%
Average Drawdown Average peak-to-trough decline	-13.70%	-16.81%	+3.11%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.79%	5.09%	-0.30%

Volatility

BEXIX vs. BIOPX - Volatility Comparison

Baron Emerging Markets Fund (BEXIX) has a higher volatility of 9.47% compared to Baron Opportunity Fund (BIOPX) at 6.14%. This indicates that BEXIX's price experiences larger fluctuations and is considered to be riskier than BIOPX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BEXIX	BIOPX	Difference
Volatility (1M) Calculated over the trailing 1-month period	9.47%	6.14%	+3.33%
Volatility (6M) Calculated over the trailing 6-month period	21.40%	16.59%	+4.81%
Volatility (1Y) Calculated over the trailing 1-year period	23.91%	21.56%	+2.35%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.52%	27.17%	-8.65%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.48%	25.04%	-6.56%

BEXIX vs. BIOPX - Expense Ratio Comparison

BEXIX has a 1.12% expense ratio, which is lower than BIOPX's 1.31% expense ratio.

Dividends

BEXIX vs. BIOPX - Dividend Comparison

BEXIX's dividend yield for the trailing twelve months is around 1.85%, less than BIOPX's 4.09% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BEXIX Baron Emerging Markets Fund	1.85%	2.04%	0.81%	0.69%	0.00%	1.88%	0.35%	0.46%	0.49%	0.45%	0.76%	0.39%
BIOPX Baron Opportunity Fund	4.09%	4.24%	4.95%	0.00%	0.00%	8.71%	6.96%	7.33%	5.29%	15.58%	13.52%	10.92%

Frequently Asked Questions

Can I hold both BEXIX and BIOPX in my portfolio?

BEXIX and BIOPX have a correlation of 0.69, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, BEXIX or BIOPX?

BEXIX has higher volatility (9.47%) compared to BIOPX (6.14%). In terms of maximum drawdown, BEXIX dropped -45.58% vs BIOPX's -67.91%.

Which has better risk-adjusted returns?

BEXIX currently has the higher Sharpe Ratio (0.94 vs 0.50), 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.