LNGZX vs. OBCHX

Last updated Jul 11, 2026

LNGZX (Columbia Greater China Fund) and OBCHX (Oberweis China Opportunities Fund) are both China Equities funds. Over the past 10 years, LNGZX returned 3.25%/yr vs 10.67%/yr for OBCHX. Their correlation of 0.83 suggests significant overlap in exposure. LNGZX charges 1.25%/yr vs 2.03%/yr for OBCHX.

Performance

LNGZX vs. OBCHX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Columbia Greater China Fund (LNGZX) and Oberweis China Opportunities Fund (OBCHX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, LNGZX achieves a -11.14% return, which is significantly lower than OBCHX's 33.19% return. Over the past 10 years, LNGZX has underperformed OBCHX with an annualized return of 3.25%, while OBCHX has yielded a comparatively higher 10.67% annualized return.

LNGZX

• 1D: 0.61%
• 1M: -3.23%
• 6M: -14.60%
• YTD: -11.14%
• 1Y: -1.39%
• 3Y*: 5.20%
• 5Y*: -10.72%
• 10Y*: 3.25%

OBCHX

• 1D: 2.32%
• 1M: 3.56%
• 6M: 25.98%
• YTD: 33.19%
• 1Y: 54.66%
• 3Y*: 26.46%
• 5Y*: 1.46%
• 10Y*: 10.67%

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

LNGZX vs. OBCHX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
LNGZX Columbia Greater China Fund	-11.14%	27.49%	12.29%	-18.70%	-28.42%	-25.21%	46.04%	32.95%	-20.01%	59.90%
OBCHX Oberweis China Opportunities Fund	33.19%	40.89%	7.28%	-7.70%	-37.21%	-5.16%	57.06%	36.32%	-25.94%	54.99%

Correlation

The correlation between LNGZX and OBCHX is 0.74, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.74
Correlation (3Y) Calculated over the trailing 3-year period	0.79
Correlation (5Y) Calculated over the trailing 5-year period	0.78
Correlation (10Y) Calculated over the trailing 10-year period	0.82
Correlation (All Time) Calculated using the full available price history since Oct 4, 2005	0.83

The correlation between LNGZX and OBCHX has been stable across timeframes, ranging from 0.74 to 0.83 - a consistent structural relationship.

Return for Risk

LNGZX vs. OBCHX — Risk / Return Rank

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

LNGZX

LNGZX Risk / Return Rank: 3
LNGZX Sharpe Ratio Rank: 3
LNGZX Sortino Ratio Rank: 3
LNGZX Omega Ratio Rank: 3
LNGZX Calmar Ratio Rank: 3
LNGZX Martin Ratio Rank: 3

OBCHX

OBCHX Risk / Return Rank: 87
OBCHX Sharpe Ratio Rank: 88
OBCHX Sortino Ratio Rank: 79
OBCHX Omega Ratio Rank: 80
OBCHX Calmar Ratio Rank: 97
OBCHX Martin Ratio Rank: 91

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.

LNGZX vs. OBCHX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Columbia Greater China Fund (LNGZX) and Oberweis China Opportunities Fund (OBCHX). 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.

	LNGZX	OBCHX	Difference
Sharpe ratio: Return per unit of total volatility	-0.04	2.36	-2.41
Sortino ratio: Return per unit of downside risk	0.09	2.93	-2.84
Omega ratio: Gain probability vs. loss probability	1.01	1.40	-0.39
Calmar ratio: Return relative to maximum drawdown	-0.04	5.86	-5.90
Martin ratio: Return relative to average drawdown	-0.09	14.30	-14.39

LNGZX vs. OBCHX - Sharpe Ratio Comparison

The current LNGZX Sharpe Ratio is -0.04, which is lower than the OBCHX Sharpe Ratio of 2.36. The chart below compares the historical Sharpe Ratios of LNGZX and OBCHX, 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

LNGZX vs. OBCHX - Drawdown Comparison

The maximum LNGZX drawdown since its inception was -73.37%, roughly equal to the maximum OBCHX drawdown of -74.03%. Use the drawdown chart below to compare losses from any high point for LNGZX and OBCHX.

Drawdown Indicators

	LNGZX	OBCHX	Difference
Max Drawdown Largest peak-to-trough decline	-73.37%	-74.03%	+0.66%
Max Drawdown (1Y) Largest decline over 1 year	-23.54%	-9.59%	-13.95%
Max Drawdown (3Y) Largest decline over 3 years	-26.71%	-23.88%	-2.83%
Max Drawdown (5Y) Largest decline over 5 years	-61.41%	-51.78%	-9.63%
Max Drawdown (10Y) Largest decline over 10 years	-67.94%	-59.47%	-8.47%
Current Drawdown Current decline from peak	-53.65%	-11.21%	-42.44%
Average Drawdown Average peak-to-trough decline	-26.61%	-25.64%	-0.97%
Ulcer Index Depth and duration of drawdowns from previous peaks	10.54%	3.92%	+6.62%

Volatility

LNGZX vs. OBCHX - Volatility Comparison

The current volatility for Columbia Greater China Fund (LNGZX) is 6.66%, while Oberweis China Opportunities Fund (OBCHX) has a volatility of 9.05%. This indicates that LNGZX experiences smaller price fluctuations and is considered to be less risky than OBCHX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	LNGZX	OBCHX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.66%	9.05%	-2.39%
Volatility (6M) Calculated over the trailing 6-month period	16.08%	18.36%	-2.28%
Volatility (1Y) Calculated over the trailing 1-year period	21.55%	23.84%	-2.29%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	29.99%	27.04%	+2.95%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	26.58%	25.29%	+1.29%

LNGZX vs. OBCHX - Expense Ratio Comparison

LNGZX has a 1.25% expense ratio, which is lower than OBCHX's 2.03% expense ratio.

Dividends

LNGZX vs. OBCHX - Dividend Comparison

LNGZX's dividend yield for the trailing twelve months is around 2.11%, more than OBCHX's 0.76% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
LNGZX Columbia Greater China Fund	2.11%	1.88%	1.21%	0.67%	0.00%	0.00%	4.29%	1.40%	5.85%	1.20%	0.00%	4.54%
OBCHX Oberweis China Opportunities Fund	0.76%	1.01%	2.16%	0.46%	1.22%	41.65%	11.50%	3.37%	26.11%	6.26%	0.81%	11.05%

Frequently Asked Questions

Can I hold both LNGZX and OBCHX in my portfolio?

LNGZX and OBCHX have a correlation of 0.74, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, LNGZX or OBCHX?

OBCHX has higher volatility (9.05%) compared to LNGZX (6.66%). In terms of maximum drawdown, LNGZX dropped -73.37% vs OBCHX's -74.03%.

Which has better risk-adjusted returns?

OBCHX currently has the higher Sharpe Ratio (2.36 vs -0.04), 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.