VTAPX vs. VTSPX

Last updated Apr 1, 2026

Compare and contrast key facts about Vanguard Short-Term Inflation-Protected Securities Index Fund Admiral Shares (VTAPX) and Vanguard Short-Term Inflation-Protected Securities Index Fund Institutional Shares (VTSPX).

VTAPX is managed by Vanguard. It was launched on Oct 16, 2012. VTSPX is managed by Vanguard. It was launched on Oct 17, 2012.

Performance

VTAPX vs. VTSPX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard Short-Term Inflation-Protected Securities Index Fund Admiral Shares (VTAPX) and Vanguard Short-Term Inflation-Protected Securities Index Fund Institutional Shares (VTSPX). The values are adjusted to include any dividend payments, if applicable.

VTAPX vs. VTSPX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VTAPX Vanguard Short-Term Inflation-Protected Securities Index Fund Admiral Shares	0.97%	6.03%	4.73%	4.59%	-2.84%	5.26%	4.97%	4.85%	0.53%	0.82%
VTSPX Vanguard Short-Term Inflation-Protected Securities Index Fund Institutional Shares	0.97%	6.06%	4.75%	4.61%	-2.82%	5.32%	4.99%	4.82%	0.59%	0.83%

Returns By Period

As of year-to-date, both investments have demonstrated similar returns, with VTAPX at 0.97% and VTSPX at 0.97%. Both investments have delivered pretty close results over the past 10 years, with VTAPX having a 3.05% annualized return and VTSPX not far ahead at 3.08%.

VTAPX

• 1D: 0.28%
• 1M: 0.04%
• YTD: 0.97%
• 6M: 1.31%
• 1Y: 3.86%
• 3Y*: 4.67%
• 5Y*: 3.48%
• 10Y*: 3.05%

VTSPX

• 1D: 0.28%
• 1M: 0.04%
• YTD: 0.97%
• 6M: 1.36%
• 1Y: 3.93%
• 3Y*: 4.69%
• 5Y*: 3.51%
• 10Y*: 3.08%

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

VTAPX vs. VTSPX - Expense Ratio Comparison

VTAPX has a 0.06% expense ratio, which is higher than VTSPX's 0.04% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

VTAPX

Vanguard Short-Term Inflation-Protected Securities Index Fund Admiral Shares

VTSPX

Vanguard Short-Term Inflation-Protected Securities Index Fund Institutional Shares

Return for Risk

VTAPX vs. VTSPX — Risk / Return Rank

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

VTAPX

VTAPX Risk / Return Rank: 96
VTAPX Sharpe Ratio Rank: 95
VTAPX Sortino Ratio Rank: 96
VTAPX Omega Ratio Rank: 94
VTAPX Calmar Ratio Rank: 98
VTAPX Martin Ratio Rank: 96

VTSPX

VTSPX Risk / Return Rank: 96
VTSPX Sharpe Ratio Rank: 95
VTSPX Sortino Ratio Rank: 96
VTSPX Omega Ratio Rank: 95
VTSPX Calmar Ratio Rank: 98
VTSPX Martin Ratio Rank: 96

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.

VTAPX vs. VTSPX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Short-Term Inflation-Protected Securities Index Fund Admiral Shares (VTAPX) and Vanguard Short-Term Inflation-Protected Securities Index Fund Institutional Shares (VTSPX). 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.

	VTAPX	VTSPX	Difference
Sharpe ratio Return per unit of total volatility	2.28	2.31	-0.03
Sortino ratio Return per unit of downside risk	3.41	3.51	-0.10
Omega ratio Gain probability vs. loss probability	1.49	1.51	-0.02
Calmar ratio Return relative to maximum drawdown	4.65	4.69	-0.04
Martin ratio Return relative to average drawdown	14.74	14.73	+0.01
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

VTAPX vs. VTSPX - Sharpe Ratio Comparison

The current VTAPX Sharpe Ratio is 2.28, which is comparable to the VTSPX Sharpe Ratio of 2.31. The chart below compares the historical Sharpe Ratios of VTAPX and VTSPX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	VTAPX	VTSPX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.28	2.31	-0.03
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	1.31	1.32	-0.01
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	1.37	1.39	-0.01
Sharpe Ratio (All Time) Calculated using the full available price history	1.04	1.05	-0.01

Correlation

The correlation between VTAPX and VTSPX is 0.97, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.

Dividends

VTAPX vs. VTSPX - Dividend Comparison

VTAPX's dividend yield for the trailing twelve months is around 3.55%, which matches VTSPX's 3.58% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016
VTAPX Vanguard Short-Term Inflation-Protected Securities Index Fund Admiral Shares	3.55%	3.78%	2.68%	2.84%	6.82%	4.67%	1.19%	1.94%	2.45%	1.52%	0.76%
VTSPX Vanguard Short-Term Inflation-Protected Securities Index Fund Institutional Shares	3.58%	3.81%	2.70%	2.86%	6.84%	4.69%	1.21%	1.96%	2.47%	1.52%	0.80%

Drawdowns

VTAPX vs. VTSPX - Drawdown Comparison

The maximum VTAPX drawdown since its inception was -5.33%, roughly equal to the maximum VTSPX drawdown of -5.35%. Use the drawdown chart below to compare losses from any high point for VTAPX and VTSPX.

Drawdown Indicators

	VTAPX	VTSPX	Difference
Max Drawdown Largest peak-to-trough decline	-5.33%	-5.35%	+0.02%
Max Drawdown (1Y) Largest decline over 1 year	-0.92%	-0.92%	0.00%
Max Drawdown (5Y) Largest decline over 5 years	-5.33%	-5.35%	+0.02%
Max Drawdown (10Y) Largest decline over 10 years	-5.33%	-5.35%	+0.02%
Current Drawdown Current decline from peak	-0.28%	-0.28%	0.00%
Average Drawdown Average peak-to-trough decline	-1.04%	-1.02%	-0.02%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.29%	0.29%	0.00%

Volatility

VTAPX vs. VTSPX - Volatility Comparison

Vanguard Short-Term Inflation-Protected Securities Index Fund Admiral Shares (VTAPX) and Vanguard Short-Term Inflation-Protected Securities Index Fund Institutional Shares (VTSPX) have volatilities of 0.59% and 0.60%, 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.

Volatility by Period

	VTAPX	VTSPX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.59%	0.60%	-0.01%
Volatility (6M) Calculated over the trailing 6-month period	0.96%	0.96%	0.00%
Volatility (1Y) Calculated over the trailing 1-year period	1.79%	1.78%	+0.01%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	2.67%	2.67%	0.00%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	2.23%	2.23%	0.00%