ZEMIX vs. COBYX

Last updated Apr 2, 2026

Compare and contrast key facts about Ninety One Emerging Markets Equity Fund (ZEMIX) and The Cook & Bynum Fund (COBYX).

ZEMIX is managed by Ninety One. It was launched on Nov 27, 2018. COBYX is managed by Cook & Bynum. It was launched on Jun 30, 2009.

Performance

ZEMIX vs. COBYX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Ninety One Emerging Markets Equity Fund (ZEMIX) and The Cook & Bynum Fund (COBYX). The values are adjusted to include any dividend payments, if applicable.

ZEMIX vs. COBYX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
ZEMIX Ninety One Emerging Markets Equity Fund	3.70%	36.71%	11.16%	10.49%	-23.11%	-0.74%	14.67%	20.51%	-3.95%
COBYX The Cook & Bynum Fund	3.01%	20.50%	-10.32%	16.73%	9.28%	9.05%	-10.97%	9.40%	-5.16%

Returns By Period

In the year-to-date period, ZEMIX achieves a 3.70% return, which is significantly higher than COBYX's 3.01% return.

ZEMIX

• 1D: 0.86%
• 1M: -10.42%
• YTD: 3.70%
• 6M: 8.18%
• 1Y: 36.15%
• 3Y*: 18.30%
• 5Y*: 4.63%
• 10Y*: —

COBYX

• 1D: 1.85%
• 1M: -3.87%
• YTD: 3.01%
• 6M: 7.66%
• 1Y: 7.10%
• 3Y*: 7.06%
• 5Y*: 7.72%
• 10Y*: 3.93%

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

ZEMIX vs. COBYX - Expense Ratio Comparison

ZEMIX has a 0.85% expense ratio, which is lower than COBYX's 1.49% expense ratio.

COBYX

The Cook & Bynum Fund

ZEMIX

Ninety One Emerging Markets Equity Fund

Return for Risk

ZEMIX vs. COBYX — Risk / Return Rank

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

ZEMIX

ZEMIX Risk / Return Rank: 90
ZEMIX Sharpe Ratio Rank: 93
ZEMIX Sortino Ratio Rank: 90
ZEMIX Omega Ratio Rank: 89
ZEMIX Calmar Ratio Rank: 91
ZEMIX Martin Ratio Rank: 88

COBYX

COBYX Risk / Return Rank: 24
COBYX Sharpe Ratio Rank: 21
COBYX Sortino Ratio Rank: 19
COBYX Omega Ratio Rank: 20
COBYX Calmar Ratio Rank: 34
COBYX Martin Ratio Rank: 25

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.

ZEMIX vs. COBYX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Ninety One Emerging Markets Equity Fund (ZEMIX) 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.

	ZEMIX	COBYX	Difference
Sharpe ratio Return per unit of total volatility	2.10	0.62	+1.48
Sortino ratio Return per unit of downside risk	2.65	0.92	+1.73
Omega ratio Gain probability vs. loss probability	1.40	1.14	+0.27
Calmar ratio Return relative to maximum drawdown	2.76	1.05	+1.71
Martin ratio Return relative to average drawdown	10.07	3.15	+6.93
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ZEMIX vs. COBYX - Sharpe Ratio Comparison

The current ZEMIX Sharpe Ratio is 2.10, which is higher than the COBYX Sharpe Ratio of 0.62. The chart below compares the historical Sharpe Ratios of ZEMIX and COBYX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	ZEMIX	COBYX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.10	0.62	+1.48
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.28	0.56	-0.28
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.29	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.43	0.35	+0.08

Correlation

The correlation between ZEMIX and COBYX is 0.47, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.

Dividends

ZEMIX vs. COBYX - Dividend Comparison

ZEMIX's dividend yield for the trailing twelve months is around 16.22%, more than COBYX's 1.14% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016
ZEMIX Ninety One Emerging Markets Equity Fund	16.22%	16.82%	0.00%	2.28%	1.22%	8.23%	1.08%	2.74%	0.16%	0.00%	0.00%
COBYX The Cook & Bynum Fund	1.14%	1.18%	0.00%	1.01%	1.16%	2.18%	0.32%	0.69%	12.60%	1.88%	5.09%

Drawdowns

ZEMIX vs. COBYX - Drawdown Comparison

The maximum ZEMIX drawdown since its inception was -40.26%, which is greater than COBYX's maximum drawdown of -34.18%. Use the drawdown chart below to compare losses from any high point for ZEMIX and COBYX.

Drawdown Indicators

	ZEMIX	COBYX	Difference
Max Drawdown Largest peak-to-trough decline	-40.26%	-34.18%	-6.08%
Max Drawdown (1Y) Largest decline over 1 year	-13.12%	-8.95%	-4.17%
Max Drawdown (5Y) Largest decline over 5 years	-37.92%	-17.10%	-20.82%
Max Drawdown (10Y) Largest decline over 10 years	—	-34.18%	—
Current Drawdown Current decline from peak	-12.37%	-6.21%	-6.16%
Average Drawdown Average peak-to-trough decline	-14.71%	-6.86%	-7.85%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.59%	2.99%	+0.60%

Volatility

ZEMIX vs. COBYX - Volatility Comparison

Ninety One Emerging Markets Equity Fund (ZEMIX) has a higher volatility of 8.04% compared to The Cook & Bynum Fund (COBYX) at 5.20%. This indicates that ZEMIX'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.

Volatility by Period

	ZEMIX	COBYX	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.04%	5.20%	+2.84%
Volatility (6M) Calculated over the trailing 6-month period	13.08%	8.42%	+4.66%
Volatility (1Y) Calculated over the trailing 1-year period	17.89%	14.59%	+3.30%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.76%	13.98%	+2.78%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.87%	13.55%	+5.32%