CTHRX vs. BOGSX

Last updated Jun 4, 2026

CTHRX (Columbia Global Technology Growth Fund Institutional 2 Class) and BOGSX (Black Oak Emerging Technology Fund) are both Technology Equities funds. Over the past 10 years, CTHRX returned 25.13%/yr vs 17.86%/yr for BOGSX. Their correlation of 0.90 suggests significant overlap in exposure. CTHRX charges 0.86%/yr vs 1.03%/yr for BOGSX.

Performance

CTHRX vs. BOGSX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Columbia Global Technology Growth Fund Institutional 2 Class (CTHRX) and Black Oak Emerging Technology Fund (BOGSX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, CTHRX achieves a 32.22% return, which is significantly lower than BOGSX's 43.19% return. Over the past 10 years, CTHRX has outperformed BOGSX with an annualized return of 25.13%, while BOGSX has yielded a comparatively lower 17.86% annualized return.

CTHRX

• 1D: 1.47%
• 1M: 17.03%
• YTD: 32.22%
• 6M: 31.35%
• 1Y: 62.30%
• 3Y*: 36.48%
• 5Y*: 21.32%
• 10Y*: 25.13%

BOGSX

• 1D: 2.19%
• 1M: 15.43%
• YTD: 43.19%
• 6M: 42.65%
• 1Y: 62.39%
• 3Y*: 25.08%
• 5Y*: 13.99%
• 10Y*: 17.86%

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

CTHRX vs. BOGSX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
CTHRX Columbia Global Technology Growth Fund Institutional 2 Class	32.22%	25.15%	31.79%	56.93%	-34.59%	23.10%	49.92%	44.27%	-1.20%	43.52%
BOGSX Black Oak Emerging Technology Fund	43.19%	19.06%	9.25%	17.79%	-27.30%	26.89%	45.16%	38.20%	-4.94%	19.05%

Correlation

The correlation between CTHRX and BOGSX is 0.86, 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	0.86
Correlation (3Y) Calculated over the trailing 3-year period	0.86
Correlation (5Y) Calculated over the trailing 5-year period	0.90
Correlation (10Y) Calculated over the trailing 10-year period	0.90
Correlation (All Time) Calculated using the full available price history since Nov 12, 2012	0.90

The correlation between CTHRX and BOGSX has been stable across timeframes, ranging from 0.86 to 0.90 - a consistent structural relationship.

Return for Risk

CTHRX vs. BOGSX — Risk / Return Rank

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

CTHRX

CTHRX Risk / Return Rank: 84
CTHRX Sharpe Ratio Rank: 91
CTHRX Sortino Ratio Rank: 77
CTHRX Omega Ratio Rank: 75
CTHRX Calmar Ratio Rank: 89
CTHRX Martin Ratio Rank: 87

BOGSX

BOGSX Risk / Return Rank: 86
BOGSX Sharpe Ratio Rank: 91
BOGSX Sortino Ratio Rank: 79
BOGSX Omega Ratio Rank: 74
BOGSX Calmar Ratio Rank: 95
BOGSX Martin Ratio Rank: 93

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.

CTHRX vs. BOGSX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Columbia Global Technology Growth Fund Institutional 2 Class (CTHRX) and Black Oak Emerging Technology Fund (BOGSX). 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.

	CTHRX	BOGSX	Difference
Sharpe ratio: Return per unit of total volatility	3.06	3.03	+0.03
Sortino ratio: Return per unit of downside risk	3.70	3.76	-0.06
Omega ratio: Gain probability vs. loss probability	1.49	1.49	0.00
Calmar ratio: Return relative to maximum drawdown	4.50	5.90	-1.40
Martin ratio: Return relative to average drawdown	16.86	20.24	-3.39
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

CTHRX vs. BOGSX - Sharpe Ratio Comparison

The current CTHRX Sharpe Ratio is 3.06, which is comparable to the BOGSX Sharpe Ratio of 3.03. The chart below compares the historical Sharpe Ratios of CTHRX and BOGSX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	CTHRX	BOGSX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.06	3.03	+0.03
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.83	0.56	+0.27
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	1.02	0.73	+0.29
Sharpe Ratio (All Time) Calculated using the full available price history	1.07	0.11	+0.96

Drawdowns

CTHRX vs. BOGSX - Drawdown Comparison

The maximum CTHRX drawdown since its inception was -39.40%, smaller than the maximum BOGSX drawdown of -92.80%. Use the drawdown chart below to compare losses from any high point for CTHRX and BOGSX.

Drawdown Indicators

	CTHRX	BOGSX	Difference
Max Drawdown Largest peak-to-trough decline	-39.40%	-92.80%	+53.40%
Max Drawdown (1Y) Largest decline over 1 year	-14.33%	-11.04%	-3.29%
Max Drawdown (3Y) Largest decline over 3 years	-26.62%	-24.78%	-1.84%
Max Drawdown (5Y) Largest decline over 5 years	-39.40%	-33.93%	-5.47%
Max Drawdown (10Y) Largest decline over 10 years	-39.40%	-33.93%	-5.47%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-5.94%	-58.96%	+53.02%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.82%	3.21%	+0.61%

Volatility

CTHRX vs. BOGSX - Volatility Comparison

The current volatility for Columbia Global Technology Growth Fund Institutional 2 Class (CTHRX) is 6.37%, while Black Oak Emerging Technology Fund (BOGSX) has a volatility of 6.71%. This indicates that CTHRX experiences smaller price fluctuations and is considered to be less risky than BOGSX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CTHRX	BOGSX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.37%	6.71%	-0.34%
Volatility (6M) Calculated over the trailing 6-month period	16.73%	16.73%	0.00%
Volatility (1Y) Calculated over the trailing 1-year period	21.06%	21.46%	-0.40%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	25.97%	25.22%	+0.75%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	24.85%	24.61%	+0.24%

CTHRX vs. BOGSX - Expense Ratio Comparison

CTHRX has a 0.86% expense ratio, which is lower than BOGSX's 1.03% expense ratio.

Dividends

CTHRX vs. BOGSX - Dividend Comparison

CTHRX's dividend yield for the trailing twelve months is around 2.28%, less than BOGSX's 4.02% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BOGSX Black Oak Emerging Technology Fund	4.02%	5.76%	7.96%	3.79%	1.87%	11.31%	6.30%	5.47%	11.71%	7.71%	4.00%	3.09%
CTHRX Columbia Global Technology Growth Fund Institutional 2 Class	2.28%	3.01%	0.99%	2.18%	3.28%	4.16%	1.01%	2.39%	5.85%	3.60%	0.35%	1.71%

Frequently Asked Questions

Can I hold both CTHRX and BOGSX in my portfolio?

CTHRX and BOGSX have a correlation of 0.86, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, CTHRX or BOGSX?

BOGSX has higher volatility (6.71%) compared to CTHRX (6.37%). In terms of maximum drawdown, CTHRX dropped -39.40% vs BOGSX's -92.80%.

Which has better risk-adjusted returns?

CTHRX currently has the higher Sharpe Ratio (3.06 vs 3.03), 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.