TDTT vs VTIP: Holdings Overlap
TDTTFlexShares iBoxx 3-Year Target Duration TIPS Index Fund
FlexShares · 22 holdings · $2.5B · as of 2026-04-30
VTIPVanguard Short-term Inflation-protected Securities Index Fund
Vanguard · 25 holdings · $19.9B · as of 2026-03-31
Holdings snapshots are 30 days apart (TDTT: 2026-04-30, VTIP: 2026-03-31). Weights and index membership change between snapshots, so the true current overlap is typically higher than shown. For funds tracking the same index, the gap can be 5–15 points.
How similar are TDTT and VTIP?
FlexShares iBoxx 3-Year Target Duration TIPS Index Fund (TDTT, by FlexShares) holds 22 positions; Vanguard Short-term Inflation-protected Securities Index Fund (VTIP, by Vanguard) holds 25. They have 20 holdings in common, and by portfolio weight the two funds are 65.1% identical. In practical terms the pair is heavily overlapping, with largely the same stocks driving both funds.
- Overlap by Weight
- 65.1%Sum of the smaller weight of each shared holding
- Shared Holdings
- 20TDTT holds 22 · VTIP holds 25
- Weight in Shared Holdings
- TDTT 95%·VTIP 81%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 TDTT
2 of 22 positions (4.3% of the fund) are not held by VTIP.
- U.S. Treasury Inflation Linked Notes3.64%
- U.S. Treasury Inflation Linked Bonds0.70%
Only in VTIP
5 of 25 positions (18.1% of the fund) are not held by TDTT.
- U.S. Treasury Inflation Linked Notes4.75%
- U.S. Treasury Inflation Linked Notes4.23%
- U.S. Treasury Inflation Linked Notes3.81%
- U.S. Treasury Inflation Linked Notes3.37%
- U.S. Treasury Inflation Linked Bonds1.95%
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| TDTT | +0.0% | +1.5% | +2.5% | +4.8% | +2.6% | +3.0% | 5.60% |
| VTIP | +0.1% | +1.9% | +3.0% | +5.0% | +3.1% | +3.1% | 4.15% |
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 TDTT vs VTIP →
Shared Holdings(20)
The top 10 shared positions account for 59% 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 | 10.75% | 5.11% | 5.11% |
|---|---|---|---|
| U.S. Treasury Inflation Linked Notes | 10.68% | 5.09% | 5.09% |
| U.S. Treasury Inflation Linked Notes | 3.74% | 5.49% | 3.74% |
| U.S. Treasury Inflation Linked Notes | 3.72% | 5.46% | 3.72% |
| U.S. Treasury Inflation Linked Notes | 3.56% | 4.54% | 3.56% |
| U.S. Treasury Inflation Linked Notes | 3.50% | 4.66% | 3.50% |
| U.S. Treasury Inflation Linked Notes | 3.49% | 4.33% | 3.49% |
| U.S. Treasury Inflation Linked Notes | 3.44% | 4.17% | 3.44% |
| U.S. Treasury Inflation Linked Notes | 3.40% | 3.76% | 3.40% |
| U.S. Treasury Inflation Linked Notes | 3.37% | 5.29% | 3.37% |
| U.S. Treasury Inflation Linked Notes | 3.37% | 4.26% | 3.37% |
| U.S. Treasury Inflation Linked Notes | 10.71% | 3.25% | 3.25% |
| U.S. Treasury Inflation Linked Notes | 3.25% | 3.77% | 3.25% |
| U.S. Treasury Inflation Linked Notes | 3.12% | 4.80% | 3.12% |
| U.S. Treasury Inflation Linked Notes | 3.08% | 4.91% | 3.08% |
| U.S. Treasury Inflation Linked Notes | 3.00% | 4.79% | 3.00% |
| U.S. Treasury Inflation Linked Bonds | 9.52% | 2.28% | 2.28% |
| U.S. Treasury Inflation Linked Bonds | 2.44% | 1.94% | 1.94% |
| U.S. Treasury Inflation Linked Bonds | 5.13% | 1.74% | 1.74% |
| U.S. Treasury Inflation Linked Bonds | 1.68% | 1.82% | 1.68% |
Frequently Asked Questions
How much do TDTT and VTIP overlap?
TDTT and VTIP overlap by 65.1% of portfolio weight. They share 20 holdings (TDTT holds 22 positions and VTIP holds 25), based on each fund's latest SEC-reported holdings.
Is it redundant to own both TDTT and VTIP?
The two portfolios are 65.1% identical by weight. Owning both mostly doubles down on the shared core rather than diversifying: the same large positions drive both funds.
What are the biggest shared holdings of TDTT and VTIP?
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 59% of the total overlap.
What does TDTT own that VTIP doesn't?
2 positions (4.3% of TDTT) are unique to TDTT, led by U.S. Treasury Inflation Linked Notes and U.S. Treasury Inflation Linked Bonds. In the other direction, 5 positions (18.1% of VTIP) are unique to VTIP.