SSSYX vs. BLK
SSSYX (State Street Equity 500 Index Fund Class K) is S&P 500 fund tracking the S&P 500 Index, while BLK (BlackRock, Inc.) is a stock. Over the past 10 years, SSSYX returned 44.89%/yr vs 14.43%/yr for BLK. Their 0.73 correlation means they have sometimes moved together and sometimes differently.
Performance
SSSYX vs. BLK - Performance Comparison
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Returns By Period
In the year-to-date period, SSSYX achieves a 10.11% return, which is significantly higher than BLK's 6.44% return. Over the past 10 years, SSSYX has outperformed BLK with an annualized return of 44.89%, while BLK has yielded a comparatively lower 14.43% annualized return.
SSSYX
- 1D
- 0.71%
- 1M
- 0.15%
- 6M
- 7.96%
- YTD
- 10.11%
- 1Y
- 21.46%
- 3Y*
- 19.39%
- 5Y*
- 12.81%
- 10Y*
- 44.89%
- ALL TIME*
- 37.71%
BLK
- 1D
- 3.32%
- 1M
- 13.15%
- 6M
- 1.75%
- YTD
- 6.44%
- 1Y
- 5.35%
- 3Y*
- 19.33%
- 5Y*
- 7.58%
- 10Y*
- 14.43%
- ALL TIME*
- 20.09%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $802.73M | $837.40M | $807.09M | |
| $0.00 | $0.00 | $0.00 |
SSSYX vs. BLK - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
SSSYX State Street Equity 500 Index Fund Class K | 10.11% | 17.81% | 24.99% | 26.27% | -18.16% | 28.51% | 1,083.11% | 31.38% | -4.38% | 21.61% |
BLK BlackRock, Inc. | 6.44% | 6.55% | 29.29% | 17.86% | -20.40% | 29.39% | 47.21% | 31.87% | -21.59% | 38.20% |
Correlation
The correlation between SSSYX and BLK is 0.53, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.53 |
Correlation (3Y) Balances recent behavior with more history. | 0.61 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.70 |
Correlation (10Y) Provides a long-term view across more market conditions. | 0.71 |
Correlation (All Time) Calculated using the full available price history since Sep 18, 2014 | 0.73 |
The correlation between SSSYX and BLK shifts across timeframes, from 0.53 (1 year) to 0.73 (all time), reflecting how their relationship changes across market environments.
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Return for Risk
SSSYX vs. BLK — Risk / Return Rank
SSSYX
BLK
SSSYX vs. BLK - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for State Street Equity 500 Index Fund Class K (SSSYX) and BlackRock, Inc. (BLK). 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.
| SSSYX | BLK | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +1.33 | ||
| Sortino ratioReturn per unit of downside risk | +1.64 | ||
| Omega ratioGain probability vs. loss probability | 1.27 | 1.06 | +0.22 |
| Calmar ratioReturn relative to maximum drawdown | 2.21 | 0.24 | +1.97 |
| Martin ratioReturn relative to average drawdown | 9.47 | 0.48 | +8.99 |
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Drawdowns
SSSYX vs. BLK - Drawdown Comparison
The maximum SSSYX drawdown since its inception was -33.77%, smaller than the maximum BLK drawdown of -60.36%. Use the drawdown chart below to compare losses from any high point for SSSYX and BLK.
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Drawdown Indicators
| SSSYX | BLK | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -33.77% | -60.36% | +26.59% |
Max Drawdown (1Y)Largest decline over 1 year | -8.88% | -22.45% | +13.57% |
Max Drawdown (3Y)Largest decline over 3 years | -18.74% | -23.74% | +5.00% |
Max Drawdown (5Y)Largest decline over 5 years | -24.49% | -43.90% | +19.41% |
Max Drawdown (10Y)Largest decline over 10 years | -33.77% | -43.90% | +10.13% |
Current DrawdownCurrent decline from peak | -1.42% | -4.80% | +3.38% |
Average DrawdownAverage peak-to-trough decline | -3.89% | -11.93% | +8.04% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 2.07% | 11.10% | -9.03% |
Volatility
SSSYX vs. BLK - Volatility Comparison
The current volatility for State Street Equity 500 Index Fund Class K (SSSYX) is 3.52%, while BlackRock, Inc. (BLK) has a volatility of 10.09%. This indicates that SSSYX experiences smaller price fluctuations and is considered to be less risky than BLK based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| SSSYX | BLK | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 3.52% | 10.09% | -6.57% |
Volatility (6M)Calculated over the trailing 6-month period | 10.10% | 21.46% | -11.36% |
Volatility (1Y)Calculated over the trailing 1-year period | 12.86% | 27.07% | -14.21% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 17.00% | 27.00% | -10.00% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 121.13% | 27.81% | +93.32% |
Dividends
SSSYX vs. BLK - Dividend Comparison
SSSYX's dividend yield for the trailing twelve months is around 1.31%, less than BLK's 1.94% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
BLK BlackRock, Inc. | 1.94% | 1.95% | 1.99% | 2.46% | 2.75% | 1.80% | 2.01% | 2.63% | 3.08% | 1.95% | 2.41% | 2.56% |
SSSYX State Street Equity 500 Index Fund Class K | 1.31% | 1.44% | 1.63% | 1.78% | 2.16% | 2.76% | 1.86% | 4.44% | 5.18% | 5.94% | 2.07% | 1.84% |
Frequently Asked Questions
SSSYX and BLK have a correlation of 0.53, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
BLK has higher volatility (10.09%) compared to SSSYX (3.52%). In terms of maximum drawdown, SSSYX dropped -33.77% vs BLK's -60.36%.
SSSYX currently has the higher Sharpe Ratio (1.52 vs 0.20), 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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