WISIX vs. DRIOX

Last updated Apr 1, 2026

Compare and contrast key facts about William Blair International Small Cap Growth Fund (WISIX) and Driehaus International Small Cap Growth Fund (DRIOX).

WISIX is managed by William Blair. It was launched on Oct 31, 2005. DRIOX is managed by Driehaus. It was launched on Sep 16, 2007.

Performance

WISIX vs. DRIOX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in William Blair International Small Cap Growth Fund (WISIX) and Driehaus International Small Cap Growth Fund (DRIOX). The values are adjusted to include any dividend payments, if applicable.

WISIX vs. DRIOX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
WISIX William Blair International Small Cap Growth Fund	-3.63%	15.31%	0.80%	14.72%	-34.99%	11.01%	29.09%	34.22%	-24.27%	32.71%
DRIOX Driehaus International Small Cap Growth Fund	-5.42%	28.93%	3.15%	11.96%	-24.37%	12.44%	29.84%	30.41%	-17.03%	41.53%

Returns By Period

In the year-to-date period, WISIX achieves a -3.63% return, which is significantly higher than DRIOX's -5.42% return. Over the past 10 years, WISIX has underperformed DRIOX with an annualized return of 4.74%, while DRIOX has yielded a comparatively higher 8.60% annualized return.

WISIX

• 1D: -1.60%
• 1M: -10.09%
• YTD: -3.63%
• 6M: -5.31%
• 1Y: 9.96%
• 3Y*: 6.21%
• 5Y*: -1.02%
• 10Y*: 4.74%

DRIOX

• 1D: -0.73%
• 1M: -14.47%
• YTD: -5.42%
• 6M: -4.72%
• 1Y: 21.81%
• 3Y*: 10.80%
• 5Y*: 2.84%
• 10Y*: 8.60%

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

WISIX vs. DRIOX - Expense Ratio Comparison

WISIX has a 1.23% expense ratio, which is higher than DRIOX's 1.16% expense ratio.

WISIX

William Blair International Small Cap Growth Fund

DRIOX

Driehaus International Small Cap Growth Fund

Return for Risk

WISIX vs. DRIOX — Risk / Return Rank

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

WISIX

WISIX Risk / Return Rank: 20
WISIX Sharpe Ratio Rank: 21
WISIX Sortino Ratio Rank: 19
WISIX Omega Ratio Rank: 20
WISIX Calmar Ratio Rank: 22
WISIX Martin Ratio Rank: 19

DRIOX

DRIOX Risk / Return Rank: 59
DRIOX Sharpe Ratio Rank: 66
DRIOX Sortino Ratio Rank: 64
DRIOX Omega Ratio Rank: 57
DRIOX Calmar Ratio Rank: 54
DRIOX Martin Ratio Rank: 51

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.

WISIX vs. DRIOX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for William Blair International Small Cap Growth Fund (WISIX) and Driehaus International Small Cap Growth Fund (DRIOX). 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.

	WISIX	DRIOX	Difference
Sharpe ratio Return per unit of total volatility	0.56	1.17	-0.61
Sortino ratio Return per unit of downside risk	0.83	1.62	-0.79
Omega ratio Gain probability vs. loss probability	1.12	1.22	-0.10
Calmar ratio Return relative to maximum drawdown	0.66	1.29	-0.63
Martin ratio Return relative to average drawdown	2.01	5.03	-3.03
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

WISIX vs. DRIOX - Sharpe Ratio Comparison

The current WISIX Sharpe Ratio is 0.56, which is lower than the DRIOX Sharpe Ratio of 1.17. The chart below compares the historical Sharpe Ratios of WISIX and DRIOX, 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

	WISIX	DRIOX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.56	1.17	-0.61
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.06	0.12	-0.18
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.28	0.42	-0.14
Sharpe Ratio (All Time) Calculated using the full available price history	0.31	0.34	-0.03

Correlation

The correlation between WISIX and DRIOX is 0.87, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.

Dividends

WISIX vs. DRIOX - Dividend Comparison

WISIX's dividend yield for the trailing twelve months is around 0.63%, less than DRIOX's 1.13% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
WISIX William Blair International Small Cap Growth Fund	0.63%	0.61%	1.78%	0.88%	0.21%	16.20%	2.09%	0.31%	13.84%	9.94%	0.36%	2.31%
DRIOX Driehaus International Small Cap Growth Fund	1.13%	1.06%	0.51%	1.16%	5.94%	27.01%	8.26%	0.77%	16.19%	15.63%	0.00%	2.72%

Drawdowns

WISIX vs. DRIOX - Drawdown Comparison

The maximum WISIX drawdown since its inception was -64.84%, which is greater than DRIOX's maximum drawdown of -59.68%. Use the drawdown chart below to compare losses from any high point for WISIX and DRIOX.

Drawdown Indicators

	WISIX	DRIOX	Difference
Max Drawdown Largest peak-to-trough decline	-64.84%	-59.68%	-5.16%
Max Drawdown (1Y) Largest decline over 1 year	-10.09%	-14.47%	+4.38%
Max Drawdown (5Y) Largest decline over 5 years	-47.76%	-47.73%	-0.03%
Max Drawdown (10Y) Largest decline over 10 years	-47.76%	-47.73%	-0.03%
Current Drawdown Current decline from peak	-22.75%	-14.47%	-8.28%
Average Drawdown Average peak-to-trough decline	-16.60%	-15.41%	-1.19%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.67%	3.70%	-0.03%

Volatility

WISIX vs. DRIOX - Volatility Comparison

The current volatility for William Blair International Small Cap Growth Fund (WISIX) is 6.00%, while Driehaus International Small Cap Growth Fund (DRIOX) has a volatility of 7.56%. This indicates that WISIX experiences smaller price fluctuations and is considered to be less risky than DRIOX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	WISIX	DRIOX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.00%	7.56%	-1.56%
Volatility (6M) Calculated over the trailing 6-month period	9.88%	12.07%	-2.19%
Volatility (1Y) Calculated over the trailing 1-year period	15.08%	17.57%	-2.49%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.21%	23.67%	-6.46%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.23%	20.76%	-3.53%