PLFMX vs. PCBIX

Last updated Aug 4, 2026

PLFMX (Principal LargeCap S&P 500 Index Fund) and PCBIX (Principal MidCap Fund Institutional Class) are both mutual funds - PLFMX is a S&P 500 fund tracking the S&P 500 Index, while PCBIX is a Mid Cap Growth Equities fund managed by Principal. Over the past 10 years, PLFMX returned 14.49%/yr vs 11.94%/yr for PCBIX. Their correlation of 0.90 means they have usually moved in the same direction. PLFMX charges 0.72%/yr vs 0.67%/yr for PCBIX.

Performance

PLFMX vs. PCBIX - Performance Comparison

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

Returns By Period

In the year-to-date period, PLFMX achieves a 9.70% return, which is significantly higher than PCBIX's -2.78% return. Over the past 10 years, PLFMX has outperformed PCBIX with an annualized return of 14.49%, while PCBIX has yielded a comparatively lower 11.94% annualized return.

PLFMX

• 1D: 0.71%
• 1M: 0.08%
• 6M: 7.62%
• YTD: 9.70%
• 1Y: 20.72%
• 3Y*: 19.19%
• 5Y*: 12.37%
• 10Y*: 14.49%
• ALL TIME*: 8.11%

PCBIX

• 1D: 1.76%
• 1M: 0.39%
• 6M: 0.14%
• YTD: -2.78%
• 1Y: -8.19%
• 3Y*: 10.19%
• 5Y*: 4.58%
• 10Y*: 11.94%
• ALL TIME*: 10.96%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
PCBIX Principal MidCap Fund Institutional Class	$0.00	$0.00	$0.00
PLFMX Principal LargeCap S&P 500 Index Fund	$0.00	$0.00	$0.00

PLFMX vs. PCBIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
PLFMX Principal LargeCap S&P 500 Index Fund	9.70%	17.10%	26.06%	25.27%	-18.67%	27.57%	17.46%	30.58%	-5.14%	20.96%
PCBIX Principal MidCap Fund Institutional Class	-2.78%	1.62%	23.63%	25.92%	-23.16%	25.22%	18.25%	49.40%	-6.86%	25.32%

Correlation

The correlation between PLFMX and PCBIX is 0.56, 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.	0.56
Correlation (3Y) Balances recent behavior with more history.	0.73
Correlation (5Y) Shows whether the relationship held over a longer period.	0.82
Correlation (10Y) Provides a long-term view across more market conditions.	0.85
Correlation (All Time) Calculated using the full available price history since Feb 28, 2001	0.90

Over the past year, the correlation between PLFMX and PCBIX has dropped to 0.56 - well below their long-term average of 0.90, suggesting their price drivers have been diverging.

Return for Risk

PLFMX vs. PCBIX — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

PLFMX

PLFMX Risk / Return Rank: 53
PLFMX Sharpe Ratio Rank: 50
PLFMX Sortino Ratio Rank: 46
PLFMX Omega Ratio Rank: 47
PLFMX Calmar Ratio Rank: 54
PLFMX Martin Ratio Rank: 67

PCBIX

PCBIX Risk / Return Rank: 1
PCBIX Sharpe Ratio Rank: 1
PCBIX Sortino Ratio Rank: 1
PCBIX Omega Ratio Rank: 1
PCBIX Calmar Ratio Rank: 2
PCBIX Martin Ratio Rank: 2

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

PLFMX vs. PCBIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Principal LargeCap S&P 500 Index Fund (PLFMX) and Principal MidCap Fund Institutional Class (PCBIX). 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.

	PLFMX	PCBIX	Difference
Sharpe ratio: Return per unit of total volatility	1.47	-0.42	+1.89
Sortino ratio: Return per unit of downside risk	2.04	-0.51	+2.56
Omega ratio: Gain probability vs. loss probability	1.26	0.94	+0.32
Calmar ratio: Return relative to maximum drawdown	2.10	-0.33	+2.43
Martin ratio: Return relative to average drawdown	8.95	-0.65	+9.61

PLFMX vs. PCBIX - Sharpe Ratio Comparison

The current PLFMX Sharpe Ratio is 1.47, which is higher than the PCBIX Sharpe Ratio of -0.42. The chart below compares the historical Sharpe Ratios of PLFMX and PCBIX, 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

PLFMX vs. PCBIX - Drawdown Comparison

The maximum PLFMX drawdown since its inception was -55.62%, which is greater than PCBIX's maximum drawdown of -50.25%. Use the drawdown chart below to compare losses from any high point for PLFMX and PCBIX.

Drawdown Indicators

	PLFMX	PCBIX	Difference
Max Drawdown Largest peak-to-trough decline	-55.62%	-50.25%	-5.37%
Max Drawdown (1Y) Largest decline over 1 year	-9.00%	-19.29%	+10.29%
Max Drawdown (3Y) Largest decline over 3 years	-18.83%	-19.29%	+0.46%
Max Drawdown (5Y) Largest decline over 5 years	-24.91%	-31.17%	+6.26%
Max Drawdown (10Y) Largest decline over 10 years	-33.80%	-40.56%	+6.76%
Current Drawdown Current decline from peak	-1.52%	-9.13%	+7.61%
Average Drawdown Average peak-to-trough decline	-9.94%	-6.59%	-3.35%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.11%	9.86%	-7.75%

Volatility

PLFMX vs. PCBIX - Volatility Comparison

The current volatility for Principal LargeCap S&P 500 Index Fund (PLFMX) is 3.51%, while Principal MidCap Fund Institutional Class (PCBIX) has a volatility of 5.29%. This indicates that PLFMX experiences smaller price fluctuations and is considered to be less risky than PCBIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PLFMX	PCBIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.51%	5.29%	-1.78%
Volatility (6M) Calculated over the trailing 6-month period	10.12%	12.13%	-2.01%
Volatility (1Y) Calculated over the trailing 1-year period	12.88%	15.24%	-2.36%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.03%	18.77%	-1.74%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.49%	19.15%	-1.66%

PLFMX vs. PCBIX - Expense Ratio Comparison

PLFMX has a 0.72% expense ratio, which is higher than PCBIX's 0.67% expense ratio.

Dividends

PLFMX vs. PCBIX - Dividend Comparison

PLFMX's dividend yield for the trailing twelve months is around 2.19%, less than PCBIX's 5.98% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
PCBIX Principal MidCap Fund Institutional Class	5.98%	5.81%	6.40%	2.51%	3.18%	7.96%	1.08%	9.02%	12.24%	3.31%	2.49%	6.30%
PLFMX Principal LargeCap S&P 500 Index Fund	2.19%	2.41%	3.77%	3.62%	2.28%	13.02%	7.02%	3.28%	6.80%	6.44%	2.66%	2.07%

Frequently Asked Questions

Can I hold both PLFMX and PCBIX in my portfolio?

PLFMX and PCBIX have a correlation of 0.56, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, PLFMX or PCBIX?

PCBIX has higher volatility (5.29%) compared to PLFMX (3.51%). In terms of maximum drawdown, PLFMX dropped -55.62% vs PCBIX's -50.25%.

Which has better risk-adjusted returns?

PLFMX currently has the higher Sharpe Ratio (1.47 vs -0.42), 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.