PIDIX vs. PLTNX

Last updated Jun 4, 2026

PIDIX (Principal International Equity Index Fund) and PLTNX (Principal LifeTime Hybrid 2055 Fund) are both mutual funds - PIDIX is a Foreign Large Cap Equities fund managed by Principal, while PLTNX is a Target Retirement Date fund managed by Principal. Over the past 10 years, PIDIX returned 9.18%/yr vs 11.98%/yr for PLTNX. Their correlation of 0.87 suggests significant overlap in exposure. PIDIX charges 0.32%/yr vs 0.05%/yr for PLTNX.

Performance

PIDIX vs. PLTNX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Principal International Equity Index Fund (PIDIX) and Principal LifeTime Hybrid 2055 Fund (PLTNX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, PIDIX achieves a 9.50% return, which is significantly lower than PLTNX's 11.67% return. Over the past 10 years, PIDIX has underperformed PLTNX with an annualized return of 9.18%, while PLTNX has yielded a comparatively higher 11.98% annualized return.

PIDIX

• 1D: 0.33%
• 1M: 4.10%
• YTD: 9.50%
• 6M: 11.89%
• 1Y: 21.95%
• 3Y*: 17.24%
• 5Y*: 8.80%
• 10Y*: 9.18%

PLTNX

• 1D: 0.48%
• 1M: 5.54%
• YTD: 11.67%
• 6M: 12.29%
• 1Y: 28.09%
• 3Y*: 19.97%
• 5Y*: 10.55%
• 10Y*: 11.98%

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

PIDIX vs. PLTNX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
PIDIX Principal International Equity Index Fund	9.50%	31.07%	4.72%	17.87%	-14.43%	11.07%	7.78%	21.42%	-13.57%	24.87%
PLTNX Principal LifeTime Hybrid 2055 Fund	11.67%	19.89%	17.25%	20.33%	-18.49%	19.70%	15.78%	26.17%	-9.84%	21.03%

Correlation

The correlation between PIDIX and PLTNX is 0.87, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.87
Correlation (3Y) Calculated over the trailing 3-year period	0.84
Correlation (5Y) Calculated over the trailing 5-year period	0.86
Correlation (10Y) Calculated over the trailing 10-year period	0.87
Correlation (All Time) Calculated using the full available price history since Oct 2, 2014	0.87

The correlation between PIDIX and PLTNX has been stable across timeframes, ranging from 0.84 to 0.87 - a consistent structural relationship.

Return for Risk

PIDIX vs. PLTNX — Risk / Return Rank

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

PIDIX

PIDIX Risk / Return Rank: 25
PIDIX Sharpe Ratio Rank: 24
PIDIX Sortino Ratio Rank: 23
PIDIX Omega Ratio Rank: 23
PIDIX Calmar Ratio Rank: 25
PIDIX Martin Ratio Rank: 30

PLTNX

PLTNX Risk / Return Rank: 69
PLTNX Sharpe Ratio Rank: 67
PLTNX Sortino Ratio Rank: 62
PLTNX Omega Ratio Rank: 62
PLTNX Calmar Ratio Rank: 72
PLTNX Martin Ratio Rank: 81

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.

PIDIX vs. PLTNX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Principal International Equity Index Fund (PIDIX) and Principal LifeTime Hybrid 2055 Fund (PLTNX). 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.

	PIDIX	PLTNX	Difference
Sharpe ratio: Return per unit of total volatility	1.40	2.40	-1.00
Sortino ratio: Return per unit of downside risk	2.01	3.32	-1.31
Omega ratio: Gain probability vs. loss probability	1.25	1.44	-0.19
Calmar ratio: Return relative to maximum drawdown	1.86	3.31	-1.44
Martin ratio: Return relative to average drawdown	6.97	15.21	-8.24
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

PIDIX vs. PLTNX - Sharpe Ratio Comparison

The current PIDIX Sharpe Ratio is 1.40, which is lower than the PLTNX Sharpe Ratio of 2.40. The chart below compares the historical Sharpe Ratios of PIDIX and PLTNX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	PIDIX	PLTNX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.40	2.40	-1.00
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.55	0.68	-0.14
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.56	0.76	-0.19
Sharpe Ratio (All Time) Calculated using the full available price history	0.39	0.69	-0.30

Drawdowns

PIDIX vs. PLTNX - Drawdown Comparison

The maximum PIDIX drawdown since its inception was -34.13%, roughly equal to the maximum PLTNX drawdown of -32.71%. Use the drawdown chart below to compare losses from any high point for PIDIX and PLTNX.

Drawdown Indicators

	PIDIX	PLTNX	Difference
Max Drawdown Largest peak-to-trough decline	-34.13%	-32.71%	-1.42%
Max Drawdown (1Y) Largest decline over 1 year	-11.31%	-8.66%	-2.65%
Max Drawdown (3Y) Largest decline over 3 years	-13.59%	-16.66%	+3.07%
Max Drawdown (5Y) Largest decline over 5 years	-29.50%	-25.48%	-4.02%
Max Drawdown (10Y) Largest decline over 10 years	-34.13%	-32.71%	-1.42%
Current Drawdown Current decline from peak	-0.46%	0.00%	-0.46%
Average Drawdown Average peak-to-trough decline	-7.49%	-4.77%	-2.72%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.02%	1.88%	+1.14%

Volatility

PIDIX vs. PLTNX - Volatility Comparison

Principal International Equity Index Fund (PIDIX) has a higher volatility of 4.71% compared to Principal LifeTime Hybrid 2055 Fund (PLTNX) at 3.42%. This indicates that PIDIX's price experiences larger fluctuations and is considered to be riskier than PLTNX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PIDIX	PLTNX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.71%	3.42%	+1.29%
Volatility (6M) Calculated over the trailing 6-month period	12.29%	9.50%	+2.79%
Volatility (1Y) Calculated over the trailing 1-year period	15.12%	11.98%	+3.14%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.18%	15.49%	+0.69%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	16.33%	15.84%	+0.49%

PIDIX vs. PLTNX - Expense Ratio Comparison

PIDIX has a 0.32% expense ratio, which is higher than PLTNX's 0.05% expense ratio.

Dividends

PIDIX vs. PLTNX - Dividend Comparison

PIDIX's dividend yield for the trailing twelve months is around 3.13%, less than PLTNX's 4.11% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
PIDIX Principal International Equity Index Fund	3.13%	3.43%	5.85%	3.81%	2.82%	5.14%	2.34%	3.36%	3.91%	3.48%	2.82%	3.67%
PLTNX Principal LifeTime Hybrid 2055 Fund	4.11%	4.59%	4.40%	2.84%	9.11%	4.23%	3.11%	3.47%	4.68%	2.21%	1.99%	1.63%

Frequently Asked Questions

Can I hold both PIDIX and PLTNX in my portfolio?

PIDIX and PLTNX have a correlation of 0.87, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, PIDIX or PLTNX?

PIDIX has higher volatility (4.71%) compared to PLTNX (3.42%). In terms of maximum drawdown, PIDIX dropped -34.13% vs PLTNX's -32.71%.

Which has better risk-adjusted returns?

PLTNX currently has the higher Sharpe Ratio (2.40 vs 1.40), 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.