VCTPX vs. FSTDX

Last updated Jun 3, 2026

VCTPX (VALIC Company I Inflation Protected Fund) and FSTDX (Fidelity Series 5+ Year Inflation-Protected Bond Index Fund) are both Inflation-Protected Bonds funds. Over the past 3 years, VCTPX returned 3.06%/yr vs 2.89%/yr for FSTDX. Their correlation of 0.94 suggests significant overlap in exposure. VCTPX charges 0.52%/yr vs 0.00%/yr for FSTDX.

Performance

VCTPX vs. FSTDX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in VALIC Company I Inflation Protected Fund (VCTPX) and Fidelity Series 5+ Year Inflation-Protected Bond Index Fund (FSTDX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, VCTPX achieves a 2.23% return, which is significantly higher than FSTDX's 1.50% return.

VCTPX

• 1D: 0.00%
• 1M: 0.11%
• YTD: 2.23%
• 6M: 1.77%
• 1Y: 6.04%
• 3Y*: 3.06%
• 5Y*: 1.03%
• 10Y*: 2.39%

FSTDX

• 1D: 0.00%
• 1M: 0.00%
• YTD: 1.50%
• 6M: 0.95%
• 1Y: 5.85%
• 3Y*: 2.89%
• 5Y*: —
• 10Y*: —

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

VCTPX vs. FSTDX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
VCTPX VALIC Company I Inflation Protected Fund	2.23%	4.22%	1.15%	4.03%	-10.23%	2.03%
FSTDX Fidelity Series 5+ Year Inflation-Protected Bond Index Fund	1.50%	7.38%	-0.43%	2.84%	-19.06%	2.10%

Correlation

The correlation between VCTPX and FSTDX is 0.92, 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	0.92
Correlation (3Y) Calculated over the trailing 3-year period	0.94
Correlation (All Time) Calculated using the full available price history since Aug 17, 2021	0.94

The correlation between VCTPX and FSTDX has been stable across timeframes, ranging from 0.92 to 0.94 - a consistent structural relationship.

Return for Risk

VCTPX vs. FSTDX — Risk / Return Rank

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

VCTPX

VCTPX Risk / Return Rank: 50
VCTPX Sharpe Ratio Rank: 41
VCTPX Sortino Ratio Rank: 44
VCTPX Omega Ratio Rank: 44
VCTPX Calmar Ratio Rank: 77
VCTPX Martin Ratio Rank: 45

FSTDX

FSTDX Risk / Return Rank: 15
FSTDX Sharpe Ratio Rank: 13
FSTDX Sortino Ratio Rank: 13
FSTDX Omega Ratio Rank: 12
FSTDX Calmar Ratio Rank: 19
FSTDX Martin Ratio Rank: 16

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.

VCTPX vs. FSTDX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for VALIC Company I Inflation Protected Fund (VCTPX) and Fidelity Series 5+ Year Inflation-Protected Bond Index Fund (FSTDX). 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.

	VCTPX	FSTDX	Difference
Sharpe ratio Return per unit of total volatility	1.87	1.00	+0.87
Sortino ratio Return per unit of downside risk	2.79	1.50	+1.29
Omega ratio Gain probability vs. loss probability	1.36	1.18	+0.19
Calmar ratio Return relative to maximum drawdown	3.49	1.62	+1.87
Martin ratio Return relative to average drawdown	9.50	4.63	+4.88
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

VCTPX vs. FSTDX - Sharpe Ratio Comparison

The current VCTPX Sharpe Ratio is 1.87, which is higher than the FSTDX Sharpe Ratio of 1.00. The chart below compares the historical Sharpe Ratios of VCTPX and FSTDX, 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

	VCTPX	FSTDX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.87	1.00	+0.87
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.18	—	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.49	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.26	-0.18	+0.44

Drawdowns

VCTPX vs. FSTDX - Drawdown Comparison

The maximum VCTPX drawdown since its inception was -17.48%, smaller than the maximum FSTDX drawdown of -24.29%. Use the drawdown chart below to compare losses from any high point for VCTPX and FSTDX.

Drawdown Indicators

	VCTPX	FSTDX	Difference
Max Drawdown Largest peak-to-trough decline	-17.48%	-24.29%	+6.81%
Max Drawdown (1Y) Largest decline over 1 year	-1.84%	-3.60%	+1.76%
Max Drawdown (3Y) Largest decline over 3 years	-5.19%	-8.73%	+3.54%
Max Drawdown (5Y) Largest decline over 5 years	-12.81%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-12.81%	—	—
Current Drawdown Current decline from peak	0.00%	-10.45%	+10.45%
Average Drawdown Average peak-to-trough decline	-5.84%	-14.04%	+8.20%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.68%	1.26%	-0.58%

Volatility

VCTPX vs. FSTDX - Volatility Comparison

The current volatility for VALIC Company I Inflation Protected Fund (VCTPX) is 0.94%, while Fidelity Series 5+ Year Inflation-Protected Bond Index Fund (FSTDX) has a volatility of 1.47%. This indicates that VCTPX experiences smaller price fluctuations and is considered to be less risky than FSTDX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VCTPX	FSTDX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.94%	1.47%	-0.53%
Volatility (6M) Calculated over the trailing 6-month period	2.16%	3.65%	-1.49%
Volatility (1Y) Calculated over the trailing 1-year period	3.13%	5.32%	-2.19%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.60%	9.46%	-3.86%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.87%	9.46%	-4.59%

VCTPX vs. FSTDX - Expense Ratio Comparison

VCTPX has a 0.52% expense ratio, which is higher than FSTDX's 0.00% expense ratio.

Dividends

VCTPX vs. FSTDX - Dividend Comparison

VCTPX's dividend yield for the trailing twelve months is around 2.56%, less than FSTDX's 3.98% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
FSTDX Fidelity Series 5+ Year Inflation-Protected Bond Index Fund	3.98%	4.38%	3.58%	3.28%	6.69%	0.88%	0.00%	0.00%	0.00%	0.00%
VCTPX VALIC Company I Inflation Protected Fund	2.56%	0.00%	13.97%	13.35%	8.00%	1.86%	2.20%	1.63%	1.98%	0.39%

Frequently Asked Questions

Can I hold both VCTPX and FSTDX in my portfolio?

With a correlation of 0.92, VCTPX and FSTDX 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, VCTPX or FSTDX?

FSTDX has higher volatility (1.47%) compared to VCTPX (0.94%). In terms of maximum drawdown, VCTPX dropped -17.48% vs FSTDX's -24.29%.

Which has better risk-adjusted returns?

VCTPX currently has the higher Sharpe Ratio (1.87 vs 1.00), 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.