PRCIX vs. GMCOX
PRCIX (T. Rowe Price New Income Fund) and GMCOX (GuideMark Core Fixed Income Fund) are both Intermediate Core Bond funds. Over the past 10 years, PRCIX returned 1.53%/yr vs 1.10%/yr for GMCOX. Their correlation of 0.86 suggests significant overlap in exposure. PRCIX charges 0.44%/yr vs 0.95%/yr for GMCOX.
Performance
PRCIX vs. GMCOX - Performance Comparison
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Returns By Period
The year-to-date returns for both investments are quite close, with PRCIX having a -0.25% return and GMCOX slightly higher at -0.24%. Over the past 10 years, PRCIX has outperformed GMCOX with an annualized return of 1.53%, while GMCOX has yielded a comparatively lower 1.10% annualized return.
PRCIX
- 1D
- -0.38%
- 1M
- 0.62%
- YTD
- -0.25%
- 6M
- 0.63%
- 1Y
- 5.54%
- 3Y*
- 4.60%
- 5Y*
- 0.05%
- 10Y*
- 1.53%
GMCOX
- 1D
- -0.24%
- 1M
- 0.61%
- YTD
- -0.24%
- 6M
- 0.00%
- 1Y
- 3.45%
- 3Y*
- 3.68%
- 5Y*
- -0.45%
- 10Y*
- 1.10%
PRCIX vs. GMCOX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
PRCIX T. Rowe Price New Income Fund | -0.25% | 8.74% | 2.50% | 5.31% | -14.87% | -0.54% | 5.77% | 9.28% | -0.62% | 4.01% |
GMCOX GuideMark Core Fixed Income Fund | -0.24% | 6.56% | 1.39% | 6.19% | -14.64% | -2.01% | 8.13% | 8.58% | -1.44% | 2.81% |
Correlation
The correlation between PRCIX and GMCOX is 0.85, 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 | 0.85 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.91 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.93 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.90 |
Correlation (All Time) Calculated using the full available price history since Jan 2, 2002 | 0.86 |
The correlation between PRCIX and GMCOX has been stable across timeframes, ranging from 0.85 to 0.93 - a consistent structural relationship.
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Return for Risk
PRCIX vs. GMCOX — Risk / Return Rank
PRCIX
GMCOX
PRCIX vs. GMCOX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for T. Rowe Price New Income Fund (PRCIX) and GuideMark Core Fixed Income Fund (GMCOX). 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.
| PRCIX | GMCOX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.46 | ||
| Sortino ratioReturn per unit of downside risk | +0.74 | ||
| Omega ratioGain probability vs. loss probability | 1.26 | 1.18 | +0.09 |
| Calmar ratioReturn relative to maximum drawdown | 1.93 | 1.30 | +0.64 |
| Martin ratioReturn relative to average drawdown | 5.49 | 3.61 | +1.88 |
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Drawdowns
PRCIX vs. GMCOX - Drawdown Comparison
The maximum PRCIX drawdown since its inception was -22.34%, smaller than the maximum GMCOX drawdown of -28.49%. Use the drawdown chart below to compare losses from any high point for PRCIX and GMCOX.
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Drawdown Indicators
| PRCIX | GMCOX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -22.34% | -28.49% | +6.15% |
Max Drawdown (1Y)Largest decline over 1 year | -3.02% | -2.96% | -0.06% |
Max Drawdown (3Y)Largest decline over 3 years | -6.00% | -6.46% | +0.46% |
Max Drawdown (5Y)Largest decline over 5 years | -19.65% | -19.75% | +0.10% |
Max Drawdown (10Y)Largest decline over 10 years | -19.65% | -20.36% | +0.71% |
Current DrawdownCurrent decline from peak | -1.79% | -4.50% | +2.71% |
Average DrawdownAverage peak-to-trough decline | -4.40% | -7.80% | +3.40% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.06% | 1.06% | 0.00% |
Volatility
PRCIX vs. GMCOX - Volatility Comparison
T. Rowe Price New Income Fund (PRCIX) has a higher volatility of 1.26% compared to GuideMark Core Fixed Income Fund (GMCOX) at 1.03%. This indicates that PRCIX's price experiences larger fluctuations and is considered to be riskier than GMCOX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| PRCIX | GMCOX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.26% | 1.03% | +0.23% |
Volatility (6M)Calculated over the trailing 6-month period | 3.02% | 2.75% | +0.27% |
Volatility (1Y)Calculated over the trailing 1-year period | 3.97% | 3.82% | +0.15% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 5.97% | 5.94% | +0.03% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 4.96% | 4.99% | -0.03% |
PRCIX vs. GMCOX - Expense Ratio Comparison
PRCIX has a 0.44% expense ratio, which is lower than GMCOX's 0.95% expense ratio.
Dividends
PRCIX vs. GMCOX - Dividend Comparison
PRCIX's dividend yield for the trailing twelve months is around 5.97%, more than GMCOX's 3.54% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
GMCOX GuideMark Core Fixed Income Fund | 3.54% | 3.54% | 3.39% | 3.40% | 2.27% | 2.16% | 3.49% | 1.45% | 2.38% | 2.35% | 2.29% | 2.55% |
PRCIX T. Rowe Price New Income Fund | 5.97% | 5.94% | 5.65% | 4.37% | 1.80% | 2.65% | 3.33% | 2.88% | 3.03% | 2.66% | 2.56% | 2.55% |
Frequently Asked Questions
PRCIX and GMCOX have a correlation of 0.85, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
PRCIX has higher volatility (1.26%) compared to GMCOX (1.03%). In terms of maximum drawdown, PRCIX dropped -22.34% vs GMCOX's -28.49%.
PRCIX currently has the higher Sharpe Ratio (1.47 vs 1.01), 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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