TIBFX vs. FMSFX

Last updated Aug 1, 2026

TIBFX (TIAA-CREF Core Plus Bond Fund Institutional Class) and FMSFX (Fidelity Mortgage Securities Fund) are both Total Bond Market funds. Over the past 10 years, TIBFX returned 2.03%/yr vs 1.12%/yr for FMSFX. Their correlation of 0.84 means they have usually moved in the same direction. TIBFX charges 0.30%/yr vs 0.45%/yr for FMSFX.

Performance

TIBFX vs. FMSFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in TIAA-CREF Core Plus Bond Fund Institutional Class (TIBFX) and Fidelity Mortgage Securities Fund (FMSFX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, TIBFX achieves a -0.12% return, which is significantly lower than FMSFX's -0.01% return. Over the past 10 years, TIBFX has outperformed FMSFX with an annualized return of 2.03%, while FMSFX has yielded a comparatively lower 1.12% annualized return.

TIBFX

• 1D: 0.11%
• 1M: -1.20%
• 6M: -0.50%
• YTD: -0.12%
• 1Y: 2.71%
• 3Y*: 4.26%
• 5Y*: 0.00%
• 10Y*: 2.03%
• ALL TIME*: 3.41%

FMSFX

• 1D: 0.00%
• 1M: -1.11%
• 6M: -0.50%
• YTD: -0.01%
• 1Y: 3.39%
• 3Y*: 4.14%
• 5Y*: -0.13%
• 10Y*: 1.12%
• ALL TIME*: 4.13%

*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)
FMSFX Fidelity Mortgage Securities Fund	$0.00	$0.00	$0.00
TIBFX TIAA-CREF Core Plus Bond Fund Institutional Class	$0.00	$0.00	$0.00

TIBFX vs. FMSFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
TIBFX TIAA-CREF Core Plus Bond Fund Institutional Class	-0.12%	7.36%	2.34%	6.66%	-13.84%	-0.32%	8.22%	9.71%	-0.53%	4.83%
FMSFX Fidelity Mortgage Securities Fund	-0.01%	8.29%	1.00%	4.91%	-12.61%	-1.20%	4.41%	6.43%	0.79%	2.35%

Correlation

The correlation between TIBFX and FMSFX is 0.91, 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.	0.91
Correlation (3Y) Balances recent behavior with more history.	0.93
Correlation (5Y) Shows whether the relationship held over a longer period.	0.92
Correlation (10Y) Provides a long-term view across more market conditions.	0.87
Correlation (All Time) Calculated using the full available price history since Mar 31, 2006	0.84

The correlation between TIBFX and FMSFX has been stable across timeframes, ranging from 0.84 to 0.93 - a consistent structural relationship.

Return for Risk

TIBFX vs. FMSFX — Risk / Return Rank

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

TIBFX

TIBFX Risk / Return Rank: 31
TIBFX Sharpe Ratio Rank: 34
TIBFX Sortino Ratio Rank: 36
TIBFX Omega Ratio Rank: 32
TIBFX Calmar Ratio Rank: 29
TIBFX Martin Ratio Rank: 27

FMSFX

FMSFX Risk / Return Rank: 38
FMSFX Sharpe Ratio Rank: 40
FMSFX Sortino Ratio Rank: 42
FMSFX Omega Ratio Rank: 38
FMSFX Calmar Ratio Rank: 40
FMSFX Martin Ratio Rank: 31

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.

TIBFX vs. FMSFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for TIAA-CREF Core Plus Bond Fund Institutional Class (TIBFX) and Fidelity Mortgage Securities Fund (FMSFX). 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.

	TIBFX	FMSFX	Difference
Sharpe ratio: Return per unit of total volatility	1.07	1.19	-0.12
Sortino ratio: Return per unit of downside risk	1.61	1.77	-0.16
Omega ratio: Gain probability vs. loss probability	1.19	1.21	-0.03
Calmar ratio: Return relative to maximum drawdown	1.28	1.64	-0.36
Martin ratio: Return relative to average drawdown	3.75	4.58	-0.82

TIBFX vs. FMSFX - Sharpe Ratio Comparison

The current TIBFX Sharpe Ratio is 1.07, which is comparable to the FMSFX Sharpe Ratio of 1.19. The chart below compares the historical Sharpe Ratios of TIBFX and FMSFX, 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

TIBFX vs. FMSFX - Drawdown Comparison

The maximum TIBFX drawdown since its inception was -18.92%, roughly equal to the maximum FMSFX drawdown of -18.81%. Use the drawdown chart below to compare losses from any high point for TIBFX and FMSFX.

Drawdown Indicators

	TIBFX	FMSFX	Difference
Max Drawdown Largest peak-to-trough decline	-18.92%	-18.81%	-0.11%
Max Drawdown (1Y) Largest decline over 1 year	-2.98%	-2.81%	-0.17%
Max Drawdown (3Y) Largest decline over 3 years	-4.78%	-6.97%	+2.19%
Max Drawdown (5Y) Largest decline over 5 years	-18.92%	-18.59%	-0.33%
Max Drawdown (10Y) Largest decline over 10 years	-18.92%	-18.81%	-0.11%
Current Drawdown Current decline from peak	-1.93%	-2.07%	+0.14%
Average Drawdown Average peak-to-trough decline	-2.61%	-1.92%	-0.69%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.01%	1.01%	0.00%

Volatility

TIBFX vs. FMSFX - Volatility Comparison

The current volatility for TIAA-CREF Core Plus Bond Fund Institutional Class (TIBFX) is 0.93%, while Fidelity Mortgage Securities Fund (FMSFX) has a volatility of 1.08%. This indicates that TIBFX experiences smaller price fluctuations and is considered to be less risky than FMSFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	TIBFX	FMSFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.93%	1.08%	-0.15%
Volatility (6M) Calculated over the trailing 6-month period	2.85%	3.03%	-0.18%
Volatility (1Y) Calculated over the trailing 1-year period	3.59%	3.89%	-0.30%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.44%	6.82%	-1.38%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.58%	5.14%	-0.56%

TIBFX vs. FMSFX - Expense Ratio Comparison

TIBFX has a 0.30% expense ratio, which is lower than FMSFX's 0.45% expense ratio.

Dividends

TIBFX vs. FMSFX - Dividend Comparison

TIBFX's dividend yield for the trailing twelve months is around 4.40%, more than FMSFX's 3.60% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FMSFX Fidelity Mortgage Securities Fund	3.60%	3.93%	4.12%	3.50%	1.43%	0.62%	2.40%	2.62%	2.57%	2.60%	2.65%	2.05%
TIBFX TIAA-CREF Core Plus Bond Fund Institutional Class	4.40%	4.55%	3.87%	3.84%	2.85%	3.76%	3.71%	3.24%	3.08%	3.16%	4.14%	3.95%

Frequently Asked Questions

Can I hold both TIBFX and FMSFX in my portfolio?

With a correlation of 0.91, TIBFX and FMSFX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, TIBFX or FMSFX?

FMSFX has higher volatility (1.08%) compared to TIBFX (0.93%). In terms of maximum drawdown, TIBFX dropped -18.92% vs FMSFX's -18.81%.

Which has better risk-adjusted returns?

FMSFX currently has the higher Sharpe Ratio (1.19 vs 1.07), 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.