BDBKX vs. AUERX
BDBKX (iShares Russell 2000 Small-Cap Index Fund Class K) and AUERX (Auer Growth Fund) are both Small Cap Blend Equities funds. Over the past 10 years, BDBKX returned 11.81%/yr vs 16.48%/yr for AUERX. Their correlation of 0.85 suggests significant overlap in exposure. BDBKX charges 0.07%/yr vs 2.37%/yr for AUERX.
Performance
BDBKX vs. AUERX - Performance Comparison
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Returns By Period
In the year-to-date period, BDBKX achieves a 21.69% return, which is significantly higher than AUERX's 15.25% return. Over the past 10 years, BDBKX has underperformed AUERX with an annualized return of 11.81%, while AUERX has yielded a comparatively higher 16.48% annualized return.
BDBKX
- 1D
- 0.80%
- 1M
- 4.82%
- YTD
- 21.69%
- 6M
- 18.93%
- 1Y
- 42.58%
- 3Y*
- 19.74%
- 5Y*
- 6.89%
- 10Y*
- 11.81%
AUERX
- 1D
- 0.73%
- 1M
- 3.39%
- YTD
- 15.25%
- 6M
- 13.29%
- 1Y
- 42.56%
- 3Y*
- 26.71%
- 5Y*
- 20.58%
- 10Y*
- 16.48%
BDBKX vs. AUERX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
BDBKX iShares Russell 2000 Small-Cap Index Fund Class K | 21.69% | 12.81% | 11.40% | 17.04% | -20.32% | 14.59% | 20.02% | 25.66% | -11.01% | 14.71% |
AUERX Auer Growth Fund | 15.25% | 30.10% | 11.12% | 21.42% | 9.95% | 45.11% | -1.85% | 27.96% | -25.63% | 28.75% |
Correlation
The correlation between BDBKX and AUERX is 0.77, 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 | 0.77 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.80 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.81 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.84 |
Correlation (All Time) Calculated using the full available price history since Mar 31, 2011 | 0.85 |
The correlation between BDBKX and AUERX has been stable across timeframes, ranging from 0.77 to 0.85 - a consistent structural relationship.
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Return for Risk
BDBKX vs. AUERX — Risk / Return Rank
BDBKX
AUERX
BDBKX vs. AUERX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares Russell 2000 Small-Cap Index Fund Class K (BDBKX) and Auer Growth Fund (AUERX). 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.
| BDBKX | AUERX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.42 | ||
| Sortino ratioReturn per unit of downside risk | -0.38 | ||
| Omega ratioGain probability vs. loss probability | 1.37 | 1.46 | -0.09 |
| Calmar ratioReturn relative to maximum drawdown | 4.04 | 4.40 | -0.36 |
| Martin ratioReturn relative to average drawdown | 14.32 | 18.46 | -4.14 |
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Drawdowns
BDBKX vs. AUERX - Drawdown Comparison
The maximum BDBKX drawdown since its inception was -41.66%, smaller than the maximum AUERX drawdown of -67.23%. Use the drawdown chart below to compare losses from any high point for BDBKX and AUERX.
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Drawdown Indicators
| BDBKX | AUERX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -41.66% | -67.23% | +25.57% |
Max Drawdown (1Y)Largest decline over 1 year | -10.97% | -10.06% | -0.91% |
Max Drawdown (3Y)Largest decline over 3 years | -27.53% | -34.80% | +7.27% |
Max Drawdown (5Y)Largest decline over 5 years | -31.96% | -34.80% | +2.84% |
Max Drawdown (10Y)Largest decline over 10 years | -41.66% | -51.89% | +10.23% |
Current DrawdownCurrent decline from peak | 0.00% | -1.91% | +1.91% |
Average DrawdownAverage peak-to-trough decline | -8.72% | -24.81% | +16.09% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.09% | 2.40% | +0.69% |
Volatility
BDBKX vs. AUERX - Volatility Comparison
iShares Russell 2000 Small-Cap Index Fund Class K (BDBKX) has a higher volatility of 6.41% compared to Auer Growth Fund (AUERX) at 5.77%. This indicates that BDBKX's price experiences larger fluctuations and is considered to be riskier than AUERX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| BDBKX | AUERX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 6.41% | 5.77% | +0.64% |
Volatility (6M)Calculated over the trailing 6-month period | 14.30% | 12.20% | +2.10% |
Volatility (1Y)Calculated over the trailing 1-year period | 19.70% | 16.60% | +3.10% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 23.25% | 24.85% | -1.60% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 23.76% | 24.41% | -0.65% |
BDBKX vs. AUERX - Expense Ratio Comparison
BDBKX has a 0.07% expense ratio, which is lower than AUERX's 2.37% expense ratio.
Dividends
BDBKX vs. AUERX - Dividend Comparison
BDBKX's dividend yield for the trailing twelve months is around 2.61%, less than AUERX's 9.88% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
AUERX Auer Growth Fund | 9.88% | 11.39% | 24.55% | 4.54% | 5.95% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
BDBKX iShares Russell 2000 Small-Cap Index Fund Class K | 2.61% | 3.17% | 4.84% | 2.96% | 1.76% | 7.67% | 1.45% | 3.47% | 4.29% | 3.18% | 4.62% | 3.64% |
Frequently Asked Questions
BDBKX and AUERX have a correlation of 0.77, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
BDBKX has higher volatility (6.41%) compared to AUERX (5.77%). In terms of maximum drawdown, BDBKX dropped -41.66% vs AUERX's -67.23%.
AUERX currently has the higher Sharpe Ratio (2.67 vs 2.26), 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.
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