PRNHX vs. BSMIX
PRNHX (T. Rowe Price New Horizons Fund) and BSMIX (iShares Russell Small/Mid-Cap Index Fund) are both mutual funds - PRNHX is a Mid Cap Growth Equities fund managed by T. Rowe Price, while BSMIX is a Small Cap Blend Equities fund managed by BlackRock. Over the past 10 years, PRNHX returned 14.70%/yr vs 11.77%/yr for BSMIX. Their correlation of 0.84 suggests significant overlap in exposure. PRNHX charges 0.75%/yr vs 0.12%/yr for BSMIX.
Performance
PRNHX vs. BSMIX - Performance Comparison
Loading charts...
Returns By Period
In the year-to-date period, PRNHX achieves a 15.06% return, which is significantly lower than BSMIX's 19.06% return. Over the past 10 years, PRNHX has outperformed BSMIX with an annualized return of 14.70%, while BSMIX has yielded a comparatively lower 11.77% annualized return.
PRNHX
- 1D
- 1.21%
- 1M
- 5.05%
- YTD
- 15.06%
- 6M
- 12.99%
- 1Y
- 27.38%
- 3Y*
- 11.94%
- 5Y*
- 1.80%
- 10Y*
- 14.70%
BSMIX
- 1D
- 0.93%
- 1M
- 5.13%
- YTD
- 19.06%
- 6M
- 18.96%
- 1Y
- 36.89%
- 3Y*
- 18.79%
- 5Y*
- 7.82%
- 10Y*
- 11.77%
PRNHX vs. BSMIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
PRNHX T. Rowe Price New Horizons Fund | 15.06% | 3.27% | 8.80% | 21.35% | -36.96% | 9.96% | 58.05% | 56.50% | 3.79% | 31.59% |
BSMIX iShares Russell Small/Mid-Cap Index Fund | 19.06% | 11.92% | 12.04% | 17.15% | -18.39% | 18.00% | 20.28% | 27.62% | -10.22% | 16.75% |
Correlation
The correlation between PRNHX and BSMIX is 0.95, 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 | 0.95 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.90 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.87 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.84 |
Correlation (All Time) Calculated using the full available price history since Jan 5, 2016 | 0.84 |
The correlation between PRNHX and BSMIX shifts across timeframes, from 0.84 (10 years) to 0.95 (1 year), reflecting how their relationship changes across market environments.
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
Return for Risk
PRNHX vs. BSMIX — Risk / Return Rank
PRNHX
BSMIX
PRNHX vs. BSMIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for T. Rowe Price New Horizons Fund (PRNHX) and iShares Russell Small/Mid-Cap Index Fund (BSMIX). 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.
| PRNHX | BSMIX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.77 | ||
| Sortino ratioReturn per unit of downside risk | -1.04 | ||
| Omega ratioGain probability vs. loss probability | 1.26 | 1.38 | -0.12 |
| Calmar ratioReturn relative to maximum drawdown | 2.22 | 4.15 | -1.93 |
| Martin ratioReturn relative to average drawdown | 8.57 | 15.76 | -7.20 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
Loading charts...
Sharpe Ratios by Period
| PRNHX | BSMIX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.49 | 2.26 | -0.77 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.07 | 0.37 | -0.30 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.65 | 0.54 | +0.10 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.49 | 0.56 | -0.07 |
Drawdowns
PRNHX vs. BSMIX - Drawdown Comparison
The maximum PRNHX drawdown since its inception was -70.96%, which is greater than BSMIX's maximum drawdown of -41.32%. Use the drawdown chart below to compare losses from any high point for PRNHX and BSMIX.
Loading charts...
Drawdown Indicators
| PRNHX | BSMIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -70.96% | -41.32% | -29.64% |
Max Drawdown (1Y)Largest decline over 1 year | -13.12% | -9.39% | -3.73% |
Max Drawdown (3Y)Largest decline over 3 years | -26.65% | -25.49% | -1.16% |
Max Drawdown (5Y)Largest decline over 5 years | -48.37% | -28.33% | -20.04% |
Max Drawdown (10Y)Largest decline over 10 years | -48.37% | -41.32% | -7.05% |
Current DrawdownCurrent decline from peak | -11.36% | 0.00% | -11.36% |
Average DrawdownAverage peak-to-trough decline | -18.38% | -7.41% | -10.97% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.39% | 2.47% | +0.92% |
Volatility
PRNHX vs. BSMIX - Volatility Comparison
T. Rowe Price New Horizons Fund (PRNHX) has a higher volatility of 6.75% compared to iShares Russell Small/Mid-Cap Index Fund (BSMIX) at 5.13%. This indicates that PRNHX's price experiences larger fluctuations and is considered to be riskier than BSMIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
Loading charts...
Volatility by Period
| PRNHX | BSMIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 6.75% | 5.13% | +1.62% |
Volatility (6M)Calculated over the trailing 6-month period | 15.55% | 12.67% | +2.88% |
Volatility (1Y)Calculated over the trailing 1-year period | 19.51% | 17.21% | +2.30% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 24.58% | 21.18% | +3.40% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 22.83% | 21.71% | +1.12% |
PRNHX vs. BSMIX - Expense Ratio Comparison
PRNHX has a 0.75% expense ratio, which is higher than BSMIX's 0.12% expense ratio.
Dividends
PRNHX vs. BSMIX - Dividend Comparison
PRNHX's dividend yield for the trailing twelve months is around 10.30%, more than BSMIX's 2.43% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
BSMIX iShares Russell Small/Mid-Cap Index Fund | 2.43% | 2.90% | 2.04% | 1.37% | 4.94% | 4.77% | 4.42% | 2.83% | 4.33% | 2.83% | 1.45% | 0.00% |
PRNHX T. Rowe Price New Horizons Fund | 10.30% | 11.85% | 9.82% | 0.00% | 4.72% | 17.09% | 13.67% | 23.46% | 13.94% | 8.27% | 5.77% | 7.72% |
Frequently Asked Questions
With a correlation of 0.95, PRNHX and BSMIX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.
PRNHX has higher volatility (6.75%) compared to BSMIX (5.13%). In terms of maximum drawdown, PRNHX dropped -70.96% vs BSMIX's -41.32%.
BSMIX currently has the higher Sharpe Ratio (2.26 vs 1.49), 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.
Find the right allocation for PRNHX and BSMIX
Add both to a portfolio and optimize allocations for your target — whether that's maximizing returns, minimizing drawdowns, or balancing risk across holdings.
Open Portfolio Optimizer