PSPCX vs. SSSYX

Last updated Jun 20, 2026

PSPCX (PIMCO StocksPLUS Fund Class C) and SSSYX (State Street Equity 500 Index Fund Class K) are both S&P 500 funds. PSPCX is actively managed, while SSSYX is passively managed. Over the past 10 years, PSPCX returned 14.30%/yr vs 45.43%/yr for SSSYX. With a 0.98 correlation, they move nearly in lockstep. PSPCX charges 1.69%/yr vs 0.02%/yr for SSSYX.

Performance

PSPCX vs. SSSYX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in PIMCO StocksPLUS Fund Class C (PSPCX) and State Street Equity 500 Index Fund Class K (SSSYX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

The year-to-date returns for both investments are quite close, with PSPCX having a 10.02% return and SSSYX slightly higher at 10.18%. Over the past 10 years, PSPCX has underperformed SSSYX with an annualized return of 14.30%, while SSSYX has yielded a comparatively higher 45.43% annualized return.

PSPCX

• 1D: 0.98%
• 1M: 1.17%
• YTD: 10.02%
• 6M: 1.74%
• 1Y: 16.93%
• 3Y*: 15.92%
• 5Y*: 9.87%
• 10Y*: 14.30%

SSSYX

• 1D: 1.09%
• 1M: 1.03%
• YTD: 10.18%
• 6M: 10.39%
• 1Y: 26.87%
• 3Y*: 20.96%
• 5Y*: 14.06%
• 10Y*: 45.43%

*Multi-year figures are annualized to reflect compound growth (CAGR)

PSPCX vs. SSSYX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
PSPCX PIMCO StocksPLUS Fund Class C	10.02%	7.00%	22.72%	24.17%	-21.92%	26.86%	17.29%	47.57%	-6.34%	21.34%
SSSYX State Street Equity 500 Index Fund Class K	10.18%	17.81%	24.99%	26.27%	-18.16%	28.51%	1,083.11%	31.38%	-4.38%	21.61%

Correlation

The correlation between PSPCX and SSSYX is 0.99 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.99
Correlation (3Y) Calculated over the trailing 3-year period	0.99
Correlation (5Y) Calculated over the trailing 5-year period	0.99
Correlation (10Y) Calculated over the trailing 10-year period	0.98
Correlation (All Time) Calculated using the full available price history since Sep 18, 2014	0.98

The correlation between PSPCX and SSSYX has been stable across timeframes, ranging from 0.98 to 0.99 - a consistent structural relationship.

Return for Risk

PSPCX vs. SSSYX — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

PSPCX

PSPCX Risk / Return Rank: 16
PSPCX Sharpe Ratio Rank: 18
PSPCX Sortino Ratio Rank: 14
PSPCX Omega Ratio Rank: 23
PSPCX Calmar Ratio Rank: 12
PSPCX Martin Ratio Rank: 12

SSSYX

SSSYX Risk / Return Rank: 70
SSSYX Sharpe Ratio Rank: 70
SSSYX Sortino Ratio Rank: 63
SSSYX Omega Ratio Rank: 65
SSSYX Calmar Ratio Rank: 73
SSSYX Martin Ratio Rank: 82

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

PSPCX vs. SSSYX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for PIMCO StocksPLUS Fund Class C (PSPCX) and State Street Equity 500 Index Fund Class K (SSSYX). 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.

	PSPCX	SSSYX	Difference
Sharpe ratio: Return per unit of total volatility	1.13	2.17	-1.03
Sortino ratio: Return per unit of downside risk	1.44	2.93	-1.49
Omega ratio: Gain probability vs. loss probability	1.24	1.39	-0.16
Calmar ratio: Return relative to maximum drawdown	1.09	3.04	-1.95
Martin ratio: Return relative to average drawdown	3.17	13.74	-10.57

PSPCX vs. SSSYX - Sharpe Ratio Comparison

The current PSPCX Sharpe Ratio is 1.13, which is lower than the SSSYX Sharpe Ratio of 2.17. The chart below compares the historical Sharpe Ratios of PSPCX and SSSYX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

PSPCX vs. SSSYX - Drawdown Comparison

The maximum PSPCX drawdown since its inception was -63.07%, which is greater than SSSYX's maximum drawdown of -33.77%. Use the drawdown chart below to compare losses from any high point for PSPCX and SSSYX.

Drawdown Indicators

	PSPCX	SSSYX	Difference
Max Drawdown Largest peak-to-trough decline	-63.07%	-33.77%	-29.30%
Max Drawdown (1Y) Largest decline over 1 year	-15.74%	-8.88%	-6.86%
Max Drawdown (3Y) Largest decline over 3 years	-20.40%	-18.74%	-1.66%
Max Drawdown (5Y) Largest decline over 5 years	-27.83%	-24.49%	-3.34%
Max Drawdown (10Y) Largest decline over 10 years	-36.46%	-33.77%	-2.69%
Current Drawdown Current decline from peak	-1.23%	-1.36%	+0.13%
Average Drawdown Average peak-to-trough decline	-10.94%	-3.91%	-7.03%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.37%	1.96%	+3.41%

Volatility

PSPCX vs. SSSYX - Volatility Comparison

PIMCO StocksPLUS Fund Class C (PSPCX) and State Street Equity 500 Index Fund Class K (SSSYX) have volatilities of 4.60% and 4.76%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PSPCX	SSSYX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.60%	4.76%	-0.16%
Volatility (6M) Calculated over the trailing 6-month period	13.12%	9.90%	+3.22%
Volatility (1Y) Calculated over the trailing 1-year period	15.06%	12.46%	+2.60%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.70%	16.98%	+0.72%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.94%	121.11%	-102.17%

PSPCX vs. SSSYX - Expense Ratio Comparison

PSPCX has a 1.69% expense ratio, which is higher than SSSYX's 0.02% expense ratio.

Dividends

PSPCX vs. SSSYX - Dividend Comparison

PSPCX's dividend yield for the trailing twelve months is around 18.41%, more than SSSYX's 1.31% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
PSPCX PIMCO StocksPLUS Fund Class C	18.41%	16.57%	14.61%	2.25%	11.36%	16.99%	4.05%	27.22%	23.19%	0.76%	0.40%	11.53%
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

Can I hold both PSPCX and SSSYX in my portfolio?

With a correlation of 0.99, PSPCX and SSSYX 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.

Which is riskier, PSPCX or SSSYX?

SSSYX has higher volatility (4.76%) compared to PSPCX (4.60%). In terms of maximum drawdown, PSPCX dropped -63.07% vs SSSYX's -33.77%.

Which has better risk-adjusted returns?

SSSYX currently has the higher Sharpe Ratio (2.17 vs 1.13), 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.