OC vs. WFSPX
OC (Owens Corning) is a stock, while WFSPX (iShares S&P 500 Index Fund) is S&P 500 fund tracking the S&P 500 Index. Over the past 10 years, OC returned 10.75%/yr vs 15.54%/yr for WFSPX. A 0.58 correlation means they provide meaningful diversification when combined.
Performance
OC vs. WFSPX - Performance Comparison
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Returns By Period
In the year-to-date period, OC achieves a 8.90% return, which is significantly lower than WFSPX's 11.69% return. Over the past 10 years, OC has underperformed WFSPX with an annualized return of 10.75%, while WFSPX has yielded a comparatively higher 15.54% annualized return.
OC
- 1D
- -0.21%
- 1M
- 2.80%
- YTD
- 8.90%
- 6M
- 6.80%
- 1Y
- -9.32%
- 3Y*
- 3.83%
- 5Y*
- 4.58%
- 10Y*
- 10.75%
WFSPX
- 1D
- 0.13%
- 1M
- 5.80%
- YTD
- 11.69%
- 6M
- 11.72%
- 1Y
- 28.93%
- 3Y*
- 22.71%
- 5Y*
- 14.24%
- 10Y*
- 15.54%
OC vs. WFSPX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
OC Owens Corning | 8.90% | -33.02% | 16.61% | 77.17% | -4.23% | 20.93% | 18.12% | 50.63% | -51.68% | 80.33% |
WFSPX iShares S&P 500 Index Fund | 11.69% | 17.83% | 24.94% | 26.25% | -18.14% | 28.63% | 18.43% | 31.45% | -4.83% | 21.27% |
Correlation
The correlation between OC and WFSPX is 0.48, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.48 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.56 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.61 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.58 |
Correlation (All Time) Calculated using the full available price history since Nov 2, 2006 | 0.58 |
The correlation between OC and WFSPX shifts across timeframes, from 0.48 (1 year) to 0.61 (5 years), reflecting how their relationship changes across market environments.
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Return for Risk
OC vs. WFSPX — Risk / Return Rank
OC
WFSPX
OC vs. WFSPX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Owens Corning (OC) and iShares S&P 500 Index Fund (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.
| OC | WFSPX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -2.78 | ||
| Sortino ratioReturn per unit of downside risk | -3.56 | ||
| Omega ratioGain probability vs. loss probability | 0.98 | 1.46 | -0.47 |
| Calmar ratioReturn relative to maximum drawdown | -0.25 | 3.35 | -3.60 |
| Martin ratioReturn relative to average drawdown | -0.46 | 15.65 | -16.11 |
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
| OC | WFSPX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | -0.26 | 2.52 | -2.78 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.13 | 0.85 | -0.71 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.31 | 0.87 | -0.56 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.22 | 0.13 | +0.09 |
Drawdowns
OC vs. WFSPX - Drawdown Comparison
The maximum OC drawdown since its inception was -85.22%, which is greater than WFSPX's maximum drawdown of -58.21%. Use the drawdown chart below to compare losses from any high point for OC and WFSPX.
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Drawdown Indicators
| OC | WFSPX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -85.22% | -58.21% | -27.01% |
Max Drawdown (1Y)Largest decline over 1 year | -37.33% | -8.90% | -28.43% |
Max Drawdown (3Y)Largest decline over 3 years | -52.48% | -18.74% | -33.74% |
Max Drawdown (5Y)Largest decline over 5 years | -52.48% | -24.51% | -27.97% |
Max Drawdown (10Y)Largest decline over 10 years | -66.57% | -33.74% | -32.83% |
Current DrawdownCurrent decline from peak | -41.07% | 0.00% | -41.07% |
Average DrawdownAverage peak-to-trough decline | -20.63% | -12.77% | -7.86% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 20.50% | 1.90% | +18.60% |
Volatility
OC vs. WFSPX - Volatility Comparison
Owens Corning (OC) has a higher volatility of 12.13% compared to iShares S&P 500 Index Fund (WFSPX) at 2.82%. This indicates that OC'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
| OC | WFSPX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 12.13% | 2.82% | +9.31% |
Volatility (6M)Calculated over the trailing 6-month period | 26.08% | 8.97% | +17.11% |
Volatility (1Y)Calculated over the trailing 1-year period | 36.04% | 11.85% | +24.19% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 34.50% | 16.88% | +17.62% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 35.24% | 18.02% | +17.22% |
Dividends
OC vs. WFSPX - Dividend Comparison
OC's dividend yield for the trailing twelve months is around 2.46%, more than WFSPX's 1.56% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
OC Owens Corning | 2.46% | 2.47% | 1.41% | 1.40% | 1.64% | 1.15% | 1.27% | 1.35% | 1.43% | 0.88% | 1.44% | 1.45% |
WFSPX iShares S&P 500 Index Fund | 1.56% | 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
OC and WFSPX have a correlation of 0.48, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
OC has higher volatility (12.13%) compared to WFSPX (2.82%). In terms of maximum drawdown, OC dropped -85.22% vs WFSPX's -58.21%.
WFSPX currently has the higher Sharpe Ratio (2.52 vs -0.26), 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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