SHSAX vs. WFSPX
SHSAX (BlackRock Health Sciences Opportunities Portfolio) and WFSPX (iShares S&P 500 Index Fund Class K) are both mutual funds - SHSAX is a Health & Biotech Equities fund managed by BlackRock, while WFSPX is a S&P 500 fund tracking the S&P 500 Index. Over the past 10 years, SHSAX returned 10.05%/yr vs 15.68%/yr for WFSPX. A 0.74 correlation means they provide meaningful diversification when combined. SHSAX charges 1.09%/yr vs 0.03%/yr for WFSPX.
Performance
SHSAX vs. WFSPX - Performance Comparison
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Returns By Period
In the year-to-date period, SHSAX achieves a -1.61% return, which is significantly lower than WFSPX's 9.77% return. Over the past 10 years, SHSAX has underperformed WFSPX with an annualized return of 10.05%, while WFSPX has yielded a comparatively higher 15.68% annualized return.
SHSAX
- 1D
- 1.37%
- 1M
- 1.76%
- YTD
- -1.61%
- 6M
- -2.20%
- 1Y
- 17.76%
- 3Y*
- 6.60%
- 5Y*
- 3.86%
- 10Y*
- 10.05%
WFSPX
- 1D
- -0.36%
- 1M
- 0.10%
- YTD
- 9.77%
- 6M
- 8.77%
- 1Y
- 25.45%
- 3Y*
- 21.35%
- 5Y*
- 13.57%
- 10Y*
- 15.68%
SHSAX vs. WFSPX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
SHSAX BlackRock Health Sciences Opportunities Portfolio | -1.61% | 15.85% | 3.73% | 3.59% | -5.94% | 11.88% | 19.44% | 25.27% | 7.93% | 24.74% |
WFSPX iShares S&P 500 Index Fund Class K | 9.77% | 17.83% | 24.94% | 26.25% | -18.14% | 28.63% | 18.43% | 31.45% | -4.83% | 21.27% |
Correlation
The correlation between SHSAX and WFSPX is 0.40, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.40 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.53 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.64 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.70 |
Correlation (All Time) Calculated using the full available price history since Jan 3, 2000 | 0.74 |
Over the past year, the correlation between SHSAX and WFSPX has dropped to 0.40 - well below their long-term average of 0.74, suggesting their price drivers have been diverging.
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Return for Risk
SHSAX vs. WFSPX — Risk / Return Rank
SHSAX
WFSPX
SHSAX vs. WFSPX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for BlackRock Health Sciences Opportunities Portfolio (SHSAX) and iShares S&P 500 Index Fund Class K (WFSPX). 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.
| SHSAX | WFSPX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.88 | ||
| Sortino ratioReturn per unit of downside risk | -0.96 | ||
| Omega ratioGain probability vs. loss probability | 1.22 | 1.39 | -0.17 |
| Calmar ratioReturn relative to maximum drawdown | 1.82 | 3.01 | -1.19 |
| Martin ratioReturn relative to average drawdown | 4.39 | 13.58 | -9.20 |
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Drawdowns
SHSAX vs. WFSPX - Drawdown Comparison
The maximum SHSAX drawdown since its inception was -35.49%, smaller than the maximum WFSPX drawdown of -58.21%. Use the drawdown chart below to compare losses from any high point for SHSAX and WFSPX.
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Drawdown Indicators
| SHSAX | WFSPX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -35.49% | -58.21% | +22.72% |
Max Drawdown (1Y)Largest decline over 1 year | -9.87% | -8.90% | -0.97% |
Max Drawdown (3Y)Largest decline over 3 years | -16.08% | -18.74% | +2.66% |
Max Drawdown (5Y)Largest decline over 5 years | -17.99% | -24.51% | +6.52% |
Max Drawdown (10Y)Largest decline over 10 years | -28.36% | -33.74% | +5.38% |
Current DrawdownCurrent decline from peak | -4.44% | -1.72% | -2.72% |
Average DrawdownAverage peak-to-trough decline | -6.17% | -12.76% | +6.59% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 4.09% | 1.97% | +2.12% |
Volatility
SHSAX vs. WFSPX - Volatility Comparison
BlackRock Health Sciences Opportunities Portfolio (SHSAX) has a higher volatility of 5.09% compared to iShares S&P 500 Index Fund Class K (WFSPX) at 4.67%. This indicates that SHSAX's price experiences larger fluctuations and is considered to be riskier than WFSPX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| SHSAX | WFSPX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 5.09% | 4.67% | +0.42% |
Volatility (6M)Calculated over the trailing 6-month period | 10.73% | 9.83% | +0.90% |
Volatility (1Y)Calculated over the trailing 1-year period | 14.22% | 12.49% | +1.73% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 14.44% | 16.97% | -2.53% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 16.57% | 18.07% | -1.50% |
SHSAX vs. WFSPX - Expense Ratio Comparison
SHSAX has a 1.09% expense ratio, which is higher than WFSPX's 0.03% expense ratio.
Dividends
SHSAX vs. WFSPX - Dividend Comparison
SHSAX's dividend yield for the trailing twelve months is around 10.81%, more than WFSPX's 1.59% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
SHSAX BlackRock Health Sciences Opportunities Portfolio | 10.81% | 10.63% | 9.18% | 3.84% | 7.44% | 9.20% | 4.34% | 3.89% | 8.56% | 3.53% | 2.43% | 12.58% |
WFSPX iShares S&P 500 Index Fund Class K | 1.59% | 1.72% | 1.41% | 1.50% | 2.02% | 1.82% | 1.66% | 1.99% | 2.00% | 1.62% | 2.37% | 2.49% |
Frequently Asked Questions
SHSAX and WFSPX have a correlation of 0.40, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
SHSAX has higher volatility (5.09%) compared to WFSPX (4.67%). In terms of maximum drawdown, SHSAX dropped -35.49% vs WFSPX's -58.21%.
WFSPX currently has the higher Sharpe Ratio (2.15 vs 1.27), 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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