WISIX vs. TIDDX
Compare and contrast key facts about William Blair International Small Cap Growth Fund (WISIX) and T. Rowe Price International Discovery Fund Class I (TIDDX).
WISIX is managed by William Blair. It was launched on Oct 31, 2005. TIDDX is a passively managed fund by T. Rowe Price that tracks the performance of the S&P Global ex-U.S. Small Cap Index Net. It was launched on Dec 17, 2015.
Performance
WISIX vs. TIDDX - Performance Comparison
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WISIX vs. TIDDX - 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% |
TIDDX T. Rowe Price International Discovery Fund Class I | -4.40% | 25.73% | 3.81% | 13.38% | -30.23% | 7.45% | 38.95% | 25.18% | -17.42% | 38.58% |
Returns By Period
In the year-to-date period, WISIX achieves a -3.63% return, which is significantly higher than TIDDX's -4.40% return. Over the past 10 years, WISIX has underperformed TIDDX with an annualized return of 4.74%, while TIDDX has yielded a comparatively higher 8.13% 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%
TIDDX
- 1D
- -0.18%
- 1M
- -13.36%
- YTD
- -4.40%
- 6M
- -1.09%
- 1Y
- 18.32%
- 3Y*
- 10.15%
- 5Y*
- 0.48%
- 10Y*
- 8.13%
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WISIX vs. TIDDX - Expense Ratio Comparison
WISIX has a 1.23% expense ratio, which is higher than TIDDX's 1.08% expense ratio.
Return for Risk
WISIX vs. TIDDX — Risk / Return Rank
WISIX
TIDDX
WISIX vs. TIDDX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for William Blair International Small Cap Growth Fund (WISIX) and T. Rowe Price International Discovery Fund Class I (TIDDX). 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 | TIDDX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.56 | 1.11 | -0.55 |
Sortino ratioReturn per unit of downside risk | 0.83 | 1.49 | -0.66 |
Omega ratioGain probability vs. loss probability | 1.12 | 1.22 | -0.10 |
Calmar ratioReturn relative to maximum drawdown | 0.66 | 1.14 | -0.48 |
Martin ratioReturn relative to average drawdown | 2.01 | 4.54 | -2.53 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| WISIX | TIDDX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.56 | 1.11 | -0.55 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | -0.06 | 0.03 | -0.09 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.28 | 0.49 | -0.22 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.31 | 0.48 | -0.17 |
Correlation
The correlation between WISIX and TIDDX is 0.85, 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. TIDDX - Dividend Comparison
WISIX's dividend yield for the trailing twelve months is around 0.63%, less than TIDDX's 5.52% 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% |
TIDDX T. Rowe Price International Discovery Fund Class I | 5.52% | 5.28% | 4.36% | 2.24% | 3.17% | 15.55% | 4.39% | 1.51% | 6.38% | 3.11% | 2.50% | 0.00% |
Drawdowns
WISIX vs. TIDDX - Drawdown Comparison
The maximum WISIX drawdown since its inception was -64.84%, which is greater than TIDDX's maximum drawdown of -43.76%. Use the drawdown chart below to compare losses from any high point for WISIX and TIDDX.
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Drawdown Indicators
| WISIX | TIDDX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -64.84% | -43.76% | -21.08% |
Max Drawdown (1Y)Largest decline over 1 year | -10.09% | -13.50% | +3.41% |
Max Drawdown (5Y)Largest decline over 5 years | -47.76% | -43.76% | -4.00% |
Max Drawdown (10Y)Largest decline over 10 years | -47.76% | -43.76% | -4.00% |
Current DrawdownCurrent decline from peak | -22.75% | -13.36% | -9.39% |
Average DrawdownAverage peak-to-trough decline | -16.60% | -13.36% | -3.24% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.67% | 3.40% | +0.27% |
Volatility
WISIX vs. TIDDX - Volatility Comparison
William Blair International Small Cap Growth Fund (WISIX) and T. Rowe Price International Discovery Fund Class I (TIDDX) have volatilities of 6.00% and 6.18%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| WISIX | TIDDX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 6.00% | 6.18% | -0.18% |
Volatility (6M)Calculated over the trailing 6-month period | 9.88% | 10.27% | -0.39% |
Volatility (1Y)Calculated over the trailing 1-year period | 15.08% | 15.31% | -0.23% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 17.21% | 16.55% | +0.66% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 17.23% | 16.50% | +0.73% |