ICPI vs. TDTT

Last updated Jun 4, 2026

ICPI (iShares 0-1 Year TIPS Bond ETF) and TDTT (FlexShares iBoxx 3-Year Target Duration TIPS Index Fund) are both Inflation-Protected Bonds funds - ICPI tracks the ICE U.S. Treasury 0-1 Year Inflation Linked Bond Index while TDTT tracks the iBoxx 3-Year Target Duration TIPS. Both are passively managed. At a 0.28 correlation, their price movements are largely independent. ICPI charges 0.09%/yr vs 0.18%/yr for TDTT.

Performance

ICPI vs. TDTT - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares 0-1 Year TIPS Bond ETF (ICPI) and FlexShares iBoxx 3-Year Target Duration TIPS Index Fund (TDTT). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ICPI achieves a 2.70% return, which is significantly higher than TDTT's 1.81% return.

ICPI

• 1D: 0.05%
• 1M: 0.44%
• YTD: 2.70%
• 6M: 2.76%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

TDTT

• 1D: 0.00%
• 1M: -0.06%
• YTD: 1.81%
• 6M: 1.77%
• 1Y: 4.65%
• 3Y*: 5.00%
• 5Y*: 2.85%
• 10Y*: 3.11%

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

ICPI vs. TDTT - Yearly Performance Comparison

	2026 (YTD)	2025
ICPI iShares 0-1 Year TIPS Bond ETF	2.70%	0.32%
TDTT FlexShares iBoxx 3-Year Target Duration TIPS Index Fund	1.81%	0.19%

Correlation

The correlation between ICPI and TDTT is 0.28, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (All Time) Calculated using the full available price history since Nov 21, 2025	0.28

Return for Risk

ICPI vs. TDTT — Risk / Return Rank

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

TDTT

TDTT Risk / Return Rank: 84
TDTT Sharpe Ratio Rank: 78
TDTT Sortino Ratio Rank: 90
TDTT Omega Ratio Rank: 84
TDTT Calmar Ratio Rank: 88
TDTT Martin Ratio Rank: 82

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.

ICPI vs. TDTT - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares 0-1 Year TIPS Bond ETF (ICPI) and FlexShares iBoxx 3-Year Target Duration TIPS Index Fund (TDTT). 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.

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

Sharpe Ratios by Period

	ICPI	TDTT	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	—	2.54	—
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.78	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.92	—
Sharpe Ratio (All Time) Calculated using the full available price history	6.20	0.69	+5.51

Drawdowns

ICPI vs. TDTT - Drawdown Comparison

The maximum ICPI drawdown since its inception was -0.22%, smaller than the maximum TDTT drawdown of -6.97%. Use the drawdown chart below to compare losses from any high point for ICPI and TDTT.

Drawdown Indicators

	ICPI	TDTT	Difference
Max Drawdown Largest peak-to-trough decline	-0.22%	-6.97%	+6.75%
Max Drawdown (1Y) Largest decline over 1 year	—	-0.90%	—
Max Drawdown (3Y) Largest decline over 3 years	—	-1.53%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-6.97%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-6.97%	—
Current Drawdown Current decline from peak	0.00%	-0.14%	+0.14%
Average Drawdown Average peak-to-trough decline	-0.03%	-1.60%	+1.57%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.28%	—

Volatility

Volatility by Period

	ICPI	TDTT	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	0.46%	—
Volatility (6M) Calculated over the trailing 6-month period	—	1.21%	—
Volatility (1Y) Calculated over the trailing 1-year period	0.95%	1.85%	-0.90%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	0.95%	3.67%	-2.72%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	0.95%	3.38%	-2.43%

ICPI vs. TDTT - Expense Ratio Comparison

ICPI has a 0.09% expense ratio, which is lower than TDTT's 0.18% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

ICPI vs. TDTT - Dividend Comparison

ICPI's dividend yield for the trailing twelve months is around 1.80%, less than TDTT's 4.54% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016
ICPI iShares 0-1 Year TIPS Bond ETF	1.80%	0.54%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
TDTT FlexShares iBoxx 3-Year Target Duration TIPS Index Fund	4.54%	4.52%	4.01%	3.88%	6.97%	4.53%	1.15%	1.91%	2.48%	1.88%	1.01%

Frequently Asked Questions

Can I hold both ICPI and TDTT in my portfolio?

ICPI and TDTT have a correlation of 0.28, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, ICPI or TDTT?

On fees, ICPI is cheaper at 0.09% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, ICPI or TDTT?

ICPI is cheaper with a 0.09% expense ratio, compared with 0.18% for TDTT.

Which ETF pays a higher dividend yield, ICPI or TDTT?

TDTT has the higher dividend yield at 4.54%, compared with 1.80% for ICPI.

What is the main difference between ICPI and TDTT?

ICPI tracks ICE U.S. Treasury 0-1 Year Inflation Linked Bond Index, while TDTT tracks iBoxx 3-Year Target Duration TIPS. They also come from different issuers: iShares and Northern Trust. Their fees differ too: 0.09% for ICPI and 0.18% for TDTT.