TIP vs TDTT: Holdings Overlap
iShares · 48 holdings · $14.7B · as of 2026-04-30
TDTTFlexShares iBoxx 3-Year Target Duration TIPS Index Fund
FlexShares · 22 holdings · $2.5B · as of 2026-04-30
How similar are TIP and TDTT?
iShares TIPS Bond ETF (TIP, by iShares) holds 48 positions; FlexShares iBoxx 3-Year Target Duration TIPS Index Fund (TDTT, by FlexShares) holds 22. They have 22 holdings in common, and by portfolio weight the two funds are 53.9% identical. In practical terms the pair is moderately overlapping; they share a meaningful core, but each fund adds distinct exposure.
- Overlap by Weight
- 53.9%Sum of the smaller weight of each shared holding
- Shared Holdings
- 22TIP holds 48 · TDTT holds 22
- Weight in Shared Holdings
- TIP 54%·TDTT 99%Share of each fund's weight in stocks both funds own
Based on each fund's latest official holdings. How is this calculated?
What makes each fund different
Only in TIP
26 of 48 positions (45.6% of the fund) are not held by TDTT.
- U.S. Treasury Inflation Linked Notes4.08%
- U.S. Treasury Inflation Linked Notes4.02%
- U.S. Treasury Inflation Linked Notes3.78%
- U.S. Treasury Inflation Linked Notes3.61%
- U.S. Treasury Inflation Linked Notes3.37%
- U.S. Treasury Inflation Linked Notes3.35%
Only in TDTT
Every position in TDTT is also held by TIP, so it brings nothing the other fund doesn’t already own.
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| TIP | -0.3% | +0.8% | +1.8% | +3.7% | +0.3% | +2.4% | 4.97% |
| TDTT | +0.0% | +1.5% | +2.5% | +4.8% | +2.6% | +3.0% | 5.60% |
Total returns including dividends, from adjusted daily closes as of 2026-08-07. 3Y/5Y/10Y are annualized. Yield is trailing-12-month distributions over the last close. Past performance does not predict future results.
Project the growth of $10,000 in TIP vs TDTT →
Shared Holdings(22)
The top 10 shared positions account for 58% of the overlap, led by U.S. Treasury Inflation Linked Notes, U.S. Treasury Inflation Linked Notes and U.S. Treasury Inflation Linked Notes.
| U.S. Treasury Inflation Linked Notes | 3.42% | 3.74% | 3.42% |
|---|---|---|---|
| U.S. Treasury Inflation Linked Notes | 3.39% | 3.72% | 3.39% |
| U.S. Treasury Inflation Linked Notes | 3.29% | 3.37% | 3.29% |
| U.S. Treasury Inflation Linked Notes | 3.17% | 10.75% | 3.17% |
| U.S. Treasury Inflation Linked Notes | 3.15% | 10.68% | 3.15% |
| U.S. Treasury Inflation Linked Notes | 3.04% | 3.08% | 3.04% |
| U.S. Treasury Inflation Linked Notes | 2.97% | 3.00% | 2.97% |
| U.S. Treasury Inflation Linked Notes | 2.95% | 3.12% | 2.95% |
| U.S. Treasury Inflation Linked Notes | 2.93% | 3.64% | 2.93% |
| U.S. Treasury Inflation Linked Notes | 2.90% | 3.50% | 2.90% |
| U.S. Treasury Inflation Linked Notes | 2.83% | 3.56% | 2.83% |
| U.S. Treasury Inflation Linked Notes | 2.68% | 3.49% | 2.68% |
| U.S. Treasury Inflation Linked Notes | 2.62% | 3.37% | 2.62% |
| U.S. Treasury Inflation Linked Notes | 2.60% | 3.44% | 2.60% |
| U.S. Treasury Inflation Linked Notes | 2.34% | 3.25% | 2.34% |
| U.S. Treasury Inflation Linked Notes | 2.34% | 3.40% | 2.34% |
| U.S. Treasury Inflation Linked Notes | 2.02% | 10.71% | 2.02% |
| U.S. Treasury Inflation Linked Bonds | 1.41% | 9.52% | 1.41% |
| U.S. Treasury Inflation Linked Bonds | 1.20% | 2.44% | 1.20% |
| U.S. Treasury Inflation Linked Bonds | 1.13% | 1.68% | 1.13% |
| U.S. Treasury Inflation Linked Bonds | 1.07% | 5.13% | 1.07% |
| U.S. Treasury Inflation Linked Bonds | 0.49% | 0.70% | 0.49% |
Frequently Asked Questions
How much do TIP and TDTT overlap?
TIP and TDTT overlap by 53.9% of portfolio weight. They share 22 holdings (TIP holds 48 positions and TDTT holds 22), based on each fund's latest SEC-reported holdings.
Is it redundant to own both TIP and TDTT?
The two portfolios are 53.9% identical by weight. Owning both is defensible: they share a meaningful core, but each fund adds exposure the other lacks.
What are the biggest shared holdings of TIP and TDTT?
The largest positions held by both funds are U.S. Treasury Inflation Linked Notes, U.S. Treasury Inflation Linked Notes, U.S. Treasury Inflation Linked Notes, U.S. Treasury Inflation Linked Notes and U.S. Treasury Inflation Linked Notes. Together the top 10 shared positions account for 58% of the total overlap.
What does TIP own that TDTT doesn't?
26 positions (45.6% of TIP) are unique to TIP, led by U.S. Treasury Inflation Linked Notes, U.S. Treasury Inflation Linked Notes and U.S. Treasury Inflation Linked Notes. In the other direction, 0 positions (0.0% of TDTT) are unique to TDTT.