TFIAX vs. PNIIX
TFIAX (Timothy Plan Fixed Income Fund) and PNIIX (Principal Bond Market Index Fund) are both Intermediate Core Bond funds. Over the past 10 years, TFIAX returned 0.43%/yr vs 1.21%/yr for PNIIX. Their correlation of 0.92 means they have usually moved in the same direction. TFIAX charges 1.34%/yr vs 0.15%/yr for PNIIX.
Performance
TFIAX vs. PNIIX - Performance Comparison
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Returns By Period
In the year-to-date period, TFIAX achieves a -0.64% return, which is significantly lower than PNIIX's -0.35% return. Over the past 10 years, TFIAX has underperformed PNIIX with an annualized return of 0.43%, while PNIIX has yielded a comparatively higher 1.21% annualized return.
TFIAX
- 1D
- -0.22%
- 1M
- -0.99%
- 6M
- -0.86%
- YTD
- -0.64%
- 1Y
- 1.84%
- 3Y*
- 2.95%
- 5Y*
- -0.78%
- 10Y*
- 0.43%
- ALL TIME*
- 2.90%
PNIIX
- 1D
- 0.00%
- 1M
- -0.93%
- 6M
- -0.58%
- YTD
- -0.35%
- 1Y
- 1.96%
- 3Y*
- 3.65%
- 5Y*
- -0.49%
- 10Y*
- 1.21%
- ALL TIME*
- 2.34%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $0.00 | $0.00 | $0.00 | |
| $0.00 | $0.00 | $0.00 |
TFIAX vs. PNIIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
TFIAX Timothy Plan Fixed Income Fund | -0.64% | 6.41% | 0.12% | 4.85% | -12.11% | -2.45% | 5.24% | 6.14% | -0.67% | 1.72% |
PNIIX Principal Bond Market Index Fund | -0.35% | 7.01% | 1.17% | 5.55% | -13.26% | -1.68% | 7.28% | 8.47% | -0.20% | 3.31% |
Correlation
The correlation between TFIAX and PNIIX is 0.89, meaning they have usually moved in the same direction, including during past declines.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.89 |
Correlation (3Y) Balances recent behavior with more history. | 0.94 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.94 |
Correlation (10Y) Provides a long-term view across more market conditions. | 0.92 |
Correlation (All Time) Calculated using the full available price history since Dec 31, 2009 | 0.92 |
The correlation between TFIAX and PNIIX has been stable across timeframes, ranging from 0.89 to 0.94 - a consistent structural relationship.
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Return for Risk
TFIAX vs. PNIIX — Risk / Return Rank
TFIAX
PNIIX
TFIAX vs. PNIIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Timothy Plan Fixed Income Fund (TFIAX) and Principal Bond Market Index Fund (PNIIX). 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.
| TFIAX | PNIIX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.02 | ||
| Sortino ratioReturn per unit of downside risk | -0.02 | ||
| Omega ratioGain probability vs. loss probability | 1.13 | 1.13 | 0.00 |
| Calmar ratioReturn relative to maximum drawdown | 0.94 | 1.06 | -0.12 |
| Martin ratioReturn relative to average drawdown | 2.37 | 2.67 | -0.30 |
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Drawdowns
TFIAX vs. PNIIX - Drawdown Comparison
The maximum TFIAX drawdown since its inception was -18.62%, roughly equal to the maximum PNIIX drawdown of -18.76%. Use the drawdown chart below to compare losses from any high point for TFIAX and PNIIX.
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Drawdown Indicators
| TFIAX | PNIIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -18.62% | -18.76% | +0.14% |
Max Drawdown (1Y)Largest decline over 1 year | -2.91% | -2.76% | -0.15% |
Max Drawdown (3Y)Largest decline over 3 years | -5.46% | -5.04% | -0.42% |
Max Drawdown (5Y)Largest decline over 5 years | -17.22% | -18.14% | +0.92% |
Max Drawdown (10Y)Largest decline over 10 years | -18.62% | -18.76% | +0.14% |
Current DrawdownCurrent decline from peak | -5.65% | -3.44% | -2.21% |
Average DrawdownAverage peak-to-trough decline | -2.92% | -3.44% | +0.52% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.16% | 1.10% | +0.06% |
Volatility
TFIAX vs. PNIIX - Volatility Comparison
Timothy Plan Fixed Income Fund (TFIAX) and Principal Bond Market Index Fund (PNIIX) have volatilities of 1.00% and 1.00%, 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
| TFIAX | PNIIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.00% | 1.00% | 0.00% |
Volatility (6M)Calculated over the trailing 6-month period | 2.83% | 2.95% | -0.12% |
Volatility (1Y)Calculated over the trailing 1-year period | 3.69% | 3.82% | -0.13% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 5.66% | 6.32% | -0.66% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 4.46% | 5.09% | -0.63% |
TFIAX vs. PNIIX - Expense Ratio Comparison
TFIAX has a 1.34% expense ratio, which is higher than PNIIX's 0.15% expense ratio.
Dividends
TFIAX vs. PNIIX - Dividend Comparison
TFIAX's dividend yield for the trailing twelve months is around 3.20%, less than PNIIX's 4.03% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
PNIIX Principal Bond Market Index Fund | 4.03% | 4.01% | 3.60% | 4.18% | 1.66% | 2.03% | 18.60% | 2.40% | 2.51% | 2.35% | 1.78% | 2.10% |
TFIAX Timothy Plan Fixed Income Fund | 3.20% | 3.00% | 3.04% | 2.48% | 1.28% | 0.84% | 1.21% | 1.60% | 1.92% | 1.62% | 1.75% | 2.03% |
Frequently Asked Questions
TFIAX and PNIIX have a correlation of 0.89, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
PNIIX has higher volatility (1.00%) compared to TFIAX (1.00%). In terms of maximum drawdown, TFIAX dropped -18.62% vs PNIIX's -18.76%.
PNIIX currently has the higher Sharpe Ratio (0.77 vs 0.75), 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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