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SPIDX vs. PLSAX
Performance
Return for Risk
Dividends
Drawdowns
Volatility

SPIDX vs. PLSAX

Last updated Apr 1, 2026

Compare and contrast key facts about Invesco S&P 500 Index Fund (SPIDX) and Principal LargeCap S&P 500 Index Fund Class A (PLSAX).

SPIDX is a passively managed fund by Invesco that tracks the performance of the S&P 500 Index. It was launched on Sep 26, 1997. PLSAX is a passively managed fund by Principal Funds that tracks the performance of the S&P 500 Index. It was launched on Feb 2, 2001. Both SPIDX and PLSAX are passive ETFs, meaning that they are not actively managed but aim to replicate the performance of the underlying index as closely as possible.

Performance

SPIDX vs. PLSAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Invesco S&P 500 Index Fund (SPIDX) and Principal LargeCap S&P 500 Index Fund Class A (PLSAX). The values are adjusted to include any dividend payments, if applicable.

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SPIDX vs. PLSAX - Yearly Performance Comparison

2026 (YTD)202520242023202220212020201920182017
SPIDX
Invesco S&P 500 Index Fund		-7.13%17.54%24.65%25.95%-18.36%28.30%18.13%31.11%-4.75%21.45%
PLSAX
Principal LargeCap S&P 500 Index Fund Class A		-7.11%17.50%26.46%25.70%-18.41%27.93%17.85%30.97%-4.93%21.23%

Returns By Period

The year-to-date returns for both investments are quite close, with SPIDX having a -7.13% return and PLSAX slightly higher at -7.11%. Over a longer period, both investments have demonstrated similar performance, with their 10-year annualized returns being quite close: SPIDX at 13.42% and PLSAX at 13.42%.

SPIDX

1D
-0.40%
1M
-7.71%
YTD
-7.13%
6M
-4.70%
1Y
14.14%
3Y*
16.85%
5Y*
11.09%
10Y*
13.42%

PLSAX

1D
-0.40%
1M
-7.71%
YTD
-7.11%
6M
-4.72%
1Y
14.11%
3Y*
17.33%
5Y*
11.29%
10Y*
13.42%
*Multi-year figures are annualized to reflect compound growth (CAGR)

Compare stocks, funds, or ETFs

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Invesco S&P 500 Index Fund

Principal LargeCap S&P 500 Index Fund Class A

Often compared with SPIDX:
SPIDX vs. SPYSPIDX vs. SPHQSPIDX vs. SCPIXSPIDX vs. CSPX.ASSPIDX vs. CSPX.LSPIDX vs. SWTSXSPIDX vs. FXAIX
Often compared with PLSAX:
PLSAX vs. VOOPLSAX vs. FXAIXPLSAX vs. VTIPLSAX vs. MEIKXPLSAX vs. SPYPLSAX vs. RPMGXPLSAX vs. SNXFX

SPIDX vs. PLSAX - Expense Ratio Comparison

SPIDX has a 0.29% expense ratio, which is lower than PLSAX's 0.38% expense ratio.

PLSAX
Principal LargeCap S&P 500 Index Fund Class A
SPIDX
Invesco S&P 500 Index Fund

Return for Risk

SPIDX vs. PLSAX — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.
SPIDX
SPIDX Risk / Return Rank: 4242
Overall Rank
SPIDX Sharpe Ratio Rank: 3939
Sharpe Ratio Rank
SPIDX Sortino Ratio Rank: 4242
Sortino Ratio Rank
SPIDX Omega Ratio Rank: 4646
Omega Ratio Rank
SPIDX Calmar Ratio Rank: 3737
Calmar Ratio Rank
SPIDX Martin Ratio Rank: 4747
Martin Ratio Rank
PLSAX
PLSAX Risk / Return Rank: 4545
Overall Rank
PLSAX Sharpe Ratio Rank: 4040
Sharpe Ratio Rank
PLSAX Sortino Ratio Rank: 4545
Sortino Ratio Rank
PLSAX Omega Ratio Rank: 4747
Omega Ratio Rank
PLSAX Calmar Ratio Rank: 4040
Calmar Ratio Rank
PLSAX Martin Ratio Rank: 5252
Martin Ratio Rank
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.

SPIDX vs. PLSAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Invesco S&P 500 Index Fund (SPIDX) and Principal LargeCap S&P 500 Index Fund Class A (PLSAX). 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.

SPIDXPLSAXDifference

Sharpe ratio

Return per unit of total volatility

0.82

0.83

-0.01

Sortino ratio

Return per unit of downside risk

1.28

1.31

-0.03

Omega ratio

Gain probability vs. loss probability

1.19

1.19

0.00

Calmar ratio

Return relative to maximum drawdown

0.97

1.03

-0.06

Martin ratio

Return relative to average drawdown

4.71

5.02

-0.30

Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SPIDX vs. PLSAX - Sharpe Ratio Comparison

The current SPIDX Sharpe Ratio is 0.82, which is comparable to the PLSAX Sharpe Ratio of 0.83. The chart below compares the historical Sharpe Ratios of SPIDX and PLSAX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

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Sharpe Ratios by Period

SPIDXPLSAXDifference

Sharpe Ratio (1Y)

Calculated over the trailing 1-year period

0.82

0.83

-0.01

Sharpe Ratio (5Y)

Calculated over the trailing 5-year period

0.66

0.67

-0.01

Sharpe Ratio (10Y)

Calculated over the trailing 10-year period

0.75

0.77

-0.03

Sharpe Ratio (All Time)

Calculated using the full available price history

0.44

0.39

+0.05

Correlation

The correlation between SPIDX and PLSAX is 0.99, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.

Dividends

SPIDX vs. PLSAX - Dividend Comparison

SPIDX's dividend yield for the trailing twelve months is around 1.16%, less than PLSAX's 2.96% yield.

TTM20252024202320222021202020192018201720162015
SPIDX
Invesco S&P 500 Index Fund		1.16%1.07%1.28%1.23%1.14%2.09%1.45%2.11%2.82%1.49%1.49%1.74%
PLSAX
Principal LargeCap S&P 500 Index Fund Class A		2.96%2.75%4.07%3.90%2.70%13.38%7.35%3.57%7.19%6.72%2.93%2.36%

Drawdowns

SPIDX vs. PLSAX - Drawdown Comparison

The maximum SPIDX drawdown since its inception was -55.30%, roughly equal to the maximum PLSAX drawdown of -55.67%. Use the drawdown chart below to compare losses from any high point for SPIDX and PLSAX.

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Drawdown Indicators

SPIDXPLSAXDifference

Max Drawdown

Largest peak-to-trough decline

-55.30%

-55.67%

+0.37%

Max Drawdown (1Y)

Largest decline over 1 year

-12.14%

-12.13%

-0.01%

Max Drawdown (5Y)

Largest decline over 5 years

-24.66%

-24.69%

+0.03%

Max Drawdown (10Y)

Largest decline over 10 years

-33.84%

-33.79%

-0.05%

Current Drawdown

Current decline from peak

-8.93%

-8.94%

+0.01%

Average Drawdown

Average peak-to-trough decline

-10.57%

-10.22%

-0.35%

Ulcer Index

Depth and duration of drawdowns from previous peaks

2.57%

2.49%

+0.08%

Volatility

SPIDX vs. PLSAX - Volatility Comparison

Invesco S&P 500 Index Fund (SPIDX) and Principal LargeCap S&P 500 Index Fund Class A (PLSAX) have volatilities of 4.24% and 4.22%, 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.

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Volatility by Period

SPIDXPLSAXDifference

Volatility (1M)

Calculated over the trailing 1-month period

4.24%

4.22%

+0.02%

Volatility (6M)

Calculated over the trailing 6-month period

9.10%

9.07%

+0.03%

Volatility (1Y)

Calculated over the trailing 1-year period

18.16%

17.87%

+0.29%

Volatility (5Y)

Calculated over the trailing 5-year period, annualized

16.87%

16.87%

0.00%

Volatility (10Y)

Calculated over the trailing 10-year period, annualized

18.05%

17.46%

+0.59%