BORAX vs. WFSPX
BORAX (CollegeAdvantage 529 Savings Plan - BlackRock Inflation Protected Bond Option) and WFSPX (iShares S&P 500 Index Fund Class K) are both mutual funds - BORAX is a Inflation-Protected Bonds fund tracking the Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) Index (Series L), while WFSPX is a S&P 500 fund tracking the S&P 500 Index. Both are passively managed. Over the past 5 years, BORAX returned 0.70%/yr vs 14.06%/yr for WFSPX. At a 0.19 correlation, their price movements are largely independent. BORAX charges 1.48%/yr vs 0.03%/yr for WFSPX.
Performance
BORAX vs. WFSPX - Performance Comparison
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Returns By Period
In the year-to-date period, BORAX achieves a 1.00% return, which is significantly lower than WFSPX's 10.17% return.
BORAX
- 1D
- 0.20%
- 1M
- 0.27%
- YTD
- 1.00%
- 6M
- 1.07%
- 1Y
- 3.56%
- 3Y*
- 3.22%
- 5Y*
- 0.70%
- 10Y*
- —
WFSPX
- 1D
- 1.09%
- 1M
- 0.46%
- YTD
- 10.17%
- 6M
- 9.66%
- 1Y
- 27.12%
- 3Y*
- 20.94%
- 5Y*
- 14.06%
- 10Y*
- 15.46%
BORAX vs. WFSPX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | |
|---|---|---|---|---|---|---|
BORAX CollegeAdvantage 529 Savings Plan - BlackRock Inflation Protected Bond Option | 1.00% | 6.40% | 1.30% | 3.58% | -11.83% | 3.96% |
WFSPX iShares S&P 500 Index Fund Class K | 10.17% | 17.83% | 24.94% | 26.25% | -18.14% | 14.46% |
Correlation
The correlation between BORAX and WFSPX is 0.32, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.32 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.22 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.19 |
Correlation (All Time) Calculated using the full available price history since May 25, 2021 | 0.19 |
The correlation between BORAX and WFSPX shifts across timeframes, from 0.19 (5 years) to 0.32 (1 year), reflecting how their relationship changes across market environments.
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Return for Risk
BORAX vs. WFSPX — Risk / Return Rank
BORAX
WFSPX
BORAX vs. WFSPX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for CollegeAdvantage 529 Savings Plan - BlackRock Inflation Protected Bond Option (BORAX) 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.
| BORAX | WFSPX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -1.03 | ||
| Sortino ratioReturn per unit of downside risk | -1.24 | ||
| Omega ratioGain probability vs. loss probability | 1.21 | 1.39 | -0.19 |
| Calmar ratioReturn relative to maximum drawdown | 1.70 | 3.03 | -1.33 |
| Martin ratioReturn relative to average drawdown | 5.32 | 13.70 | -8.38 |
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Drawdowns
BORAX vs. WFSPX - Drawdown Comparison
The maximum BORAX drawdown since its inception was -14.39%, smaller than the maximum WFSPX drawdown of -58.21%. Use the drawdown chart below to compare losses from any high point for BORAX and WFSPX.
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Drawdown Indicators
| BORAX | WFSPX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -14.39% | -58.21% | +43.82% |
Max Drawdown (1Y)Largest decline over 1 year | -2.23% | -8.90% | +6.67% |
Max Drawdown (3Y)Largest decline over 3 years | -5.01% | -18.74% | +13.73% |
Max Drawdown (5Y)Largest decline over 5 years | -14.39% | -24.51% | +10.12% |
Max Drawdown (10Y)Largest decline over 10 years | — | -33.74% | — |
Current DrawdownCurrent decline from peak | -1.11% | -1.36% | +0.25% |
Average DrawdownAverage peak-to-trough decline | -6.15% | -12.76% | +6.61% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.71% | 1.96% | -1.25% |
Volatility
BORAX vs. WFSPX - Volatility Comparison
The current volatility for CollegeAdvantage 529 Savings Plan - BlackRock Inflation Protected Bond Option (BORAX) is 1.25%, while iShares S&P 500 Index Fund Class K (WFSPX) has a volatility of 4.77%. This indicates that BORAX experiences smaller price fluctuations and is considered to be less risky 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
| BORAX | WFSPX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.25% | 4.77% | -3.52% |
Volatility (6M)Calculated over the trailing 6-month period | 2.52% | 9.90% | -7.38% |
Volatility (1Y)Calculated over the trailing 1-year period | 3.34% | 12.46% | -9.12% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.22% | 16.97% | -10.75% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 6.19% | 18.07% | -11.88% |
BORAX vs. WFSPX - Expense Ratio Comparison
BORAX has a 1.48% expense ratio, which is higher than WFSPX's 0.03% expense ratio.
Dividends
BORAX vs. WFSPX - Dividend Comparison
BORAX has not paid dividends to shareholders, while WFSPX's dividend yield for the trailing twelve months is around 1.59%.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
BORAX CollegeAdvantage 529 Savings Plan - BlackRock Inflation Protected Bond Option | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
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
BORAX and WFSPX have a correlation of 0.32, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
WFSPX has higher volatility (4.77%) compared to BORAX (1.25%). In terms of maximum drawdown, BORAX dropped -14.39% vs WFSPX's -58.21%.
WFSPX currently has the higher Sharpe Ratio (2.16 vs 1.14), 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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