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VIDMX vs. COBYX
Performance
Return for Risk
Drawdowns
Volatility
Dividends

VIDMX vs. COBYX

Last updated Jun 27, 2026

VIDMX (Virtus KAR Developing Markets Fund) and COBYX (The Cook & Bynum Fund) are both Emerging Markets Diversified funds. Over the past 5 years, VIDMX returned 3.61%/yr vs 8.16%/yr for COBYX. At a 0.48 correlation, their price movements are largely independent. VIDMX charges 1.31%/yr vs 1.49%/yr for COBYX.

Performance

VIDMX vs. COBYX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Virtus KAR Developing Markets Fund (VIDMX) and The Cook & Bynum Fund (COBYX). The values are adjusted to include any dividend payments, if applicable.

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Returns By Period

In the year-to-date period, VIDMX achieves a 5.22% return, which is significantly lower than COBYX's 10.62% return.

VIDMX

1D
0.36%
1M
-1.25%
YTD
5.22%
6M
5.42%
1Y
11.42%
3Y*
14.79%
5Y*
3.61%
10Y*
—

COBYX

1D
0.41%
1M
-0.71%
YTD
10.62%
6M
9.88%
1Y
16.10%
3Y*
7.93%
5Y*
8.16%
10Y*
4.88%
*Multi-year figures are annualized to reflect compound growth (CAGR)

VIDMX vs. COBYX - Yearly Performance Comparison

2026 (YTD)20252024202320222021
VIDMX
Virtus KAR Developing Markets Fund		5.22%27.21%5.26%15.44%-21.26%-5.95%
COBYX
The Cook & Bynum Fund		10.62%20.50%-10.32%16.73%9.28%-2.11%

Correlation

The correlation between VIDMX and COBYX is 0.35, which is low. Their price movements are largely independent, making them effective diversification partners.

Correlation
Correlation (1Y)
Calculated over the trailing 1-year period

0.35

Correlation (3Y)
Calculated over the trailing 3-year period

0.42

Correlation (5Y)
Calculated over the trailing 5-year period

0.48

Correlation (All Time)
Calculated using the full available price history since Jun 24, 2021

0.48

The correlation between VIDMX and COBYX shifts across timeframes, from 0.35 (1 year) to 0.48 (5 years), reflecting how their relationship changes across market environments.

Compare stocks, funds, or ETFs

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Virtus KAR Developing Markets Fund

The Cook & Bynum Fund

Often compared with VIDMX:
VIDMX vs. VEAVIDMX vs. EFAVIDMX vs. VINIXVIDMX vs. AIOVIDMX vs. LCSMXVIDMX vs. FPADXVIDMX vs. DEMIX
Often compared with COBYX:
COBYX vs. XLFCOBYX vs. DESIXCOBYX vs. DFESXCOBYX vs. FSSGXCOBYX vs. PEMYXCOBYX vs. GBFAXCOBYX vs. DAADX

Return for Risk

VIDMX vs. COBYX — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.
VIDMX
VIDMX Risk / Return Rank: 1616
Overall Rank
VIDMX Sharpe Ratio Rank: 1616
Sharpe Ratio Rank
VIDMX Sortino Ratio Rank: 1616
Sortino Ratio Rank
VIDMX Omega Ratio Rank: 1717
Omega Ratio Rank
VIDMX Calmar Ratio Rank: 1515
Calmar Ratio Rank
VIDMX Martin Ratio Rank: 1717
Martin Ratio Rank
COBYX
COBYX Risk / Return Rank: 3737
Overall Rank
COBYX Sharpe Ratio Rank: 3939
Sharpe Ratio Rank
COBYX Sortino Ratio Rank: 4141
Sortino Ratio Rank
COBYX Omega Ratio Rank: 3737
Omega Ratio Rank
COBYX Calmar Ratio Rank: 3737
Calmar Ratio Rank
COBYX Martin Ratio Rank: 3333
Martin Ratio Rank
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.

VIDMX vs. COBYX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Virtus KAR Developing Markets Fund (VIDMX) and The Cook & Bynum Fund (COBYX). 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.

VIDMXCOBYXDifference
Sharpe ratioReturn per unit of total volatility
0.93
1.49

-0.55

Sortino ratioReturn per unit of downside risk
1.35
2.20

-0.85

Omega ratioGain probability vs. loss probability

1.18

1.27

-0.09

Calmar ratioReturn relative to maximum drawdown

1.11

1.97

-0.86

Martin ratioReturn relative to average drawdown

3.72

6.32

-2.61

VIDMX vs. COBYX - Sharpe Ratio Comparison

The current VIDMX Sharpe Ratio is 0.93, which is lower than the COBYX Sharpe Ratio of 1.49. The chart below compares the historical Sharpe Ratios of VIDMX and COBYX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

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Drawdowns

VIDMX vs. COBYX - Drawdown Comparison

The maximum VIDMX drawdown since its inception was -35.00%, roughly equal to the maximum COBYX drawdown of -34.18%. Use the drawdown chart below to compare losses from any high point for VIDMX and COBYX.

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Drawdown Indicators

VIDMXCOBYXDifference

Max Drawdown

Largest peak-to-trough decline

-35.00%

-34.18%

-0.82%

Max Drawdown (1Y)

Largest decline over 1 year

-11.07%

-8.95%

-2.12%

Max Drawdown (3Y)

Largest decline over 3 years

-12.97%

-16.29%

+3.32%

Max Drawdown (5Y)

Largest decline over 5 years

-35.00%

-17.10%

-17.90%

Max Drawdown (10Y)

Largest decline over 10 years

—

-34.18%

—

Current Drawdown

Current decline from peak

-4.89%

-1.22%

-3.67%

Average Drawdown

Average peak-to-trough decline

-12.93%

-6.77%

-6.16%

Ulcer Index

Depth and duration of drawdowns from previous peaks

3.29%

2.80%

+0.49%

Volatility

VIDMX vs. COBYX - Volatility Comparison

Virtus KAR Developing Markets Fund (VIDMX) has a higher volatility of 5.06% compared to The Cook & Bynum Fund (COBYX) at 3.10%. This indicates that VIDMX's price experiences larger fluctuations and is considered to be riskier than COBYX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

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Volatility by Period

VIDMXCOBYXDifference

Volatility (1M)

Calculated over the trailing 1-month period

5.06%

3.10%

+1.96%

Volatility (6M)

Calculated over the trailing 6-month period

10.72%

9.57%

+1.15%

Volatility (1Y)

Calculated over the trailing 1-year period

13.15%

11.91%

+1.24%

Volatility (5Y)

Calculated over the trailing 5-year period, annualized

14.84%

13.99%

+0.85%

Volatility (10Y)

Calculated over the trailing 10-year period, annualized

14.84%

13.65%

+1.19%

VIDMX vs. COBYX - Expense Ratio Comparison

VIDMX has a 1.31% expense ratio, which is lower than COBYX's 1.49% expense ratio.

Dividends

VIDMX vs. COBYX - Dividend Comparison

VIDMX's dividend yield for the trailing twelve months is around 2.42%, more than COBYX's 1.07% yield.

PositionTTM2025202420232022202120202019201820172016
COBYX
The Cook & Bynum Fund		1.07%1.18%0.00%1.01%1.16%2.18%0.32%0.69%12.60%1.88%5.09%
VIDMX
Virtus KAR Developing Markets Fund		2.42%2.55%1.94%2.32%1.30%0.56%0.00%0.00%0.00%0.00%0.00%

Frequently Asked Questions

VIDMX and COBYX have a correlation of 0.35, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

VIDMX has higher volatility (5.06%) compared to COBYX (3.10%). In terms of maximum drawdown, VIDMX dropped -35.00% vs COBYX's -34.18%.

COBYX currently has the higher Sharpe Ratio (1.49 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.

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