Fund · FlexShares iBoxx 3-Year Target Duration TIPS Index Fund · measured from SEC filings
TDTT holdings
TDTT reports 23 holdings and behaves like 14.9 equally weighted ones, computed from its SEC Form N-PORT filing for 2026-07-31. The fact sheet publishes the first number; this page computes the second, and traces it across 27 quarters of filings.
Measured concentration
as of 2026-07-31Computed by this site from the fund's SEC Form N-PORT filing; what the measure does not tell you · every fund in one table · hold it with other funds? X-ray the mix. Pricing: 0% at a quoted market price (level 1), one issuer country.
What stands out
as of 2026-07-31TDTT's largest investment is U.S. Treasury Inflation Linked Notes at 10.75% of net assets. U.S. Treasury Inflation Linked Notes and U.S. Treasury Inflation Linked Notes follow; the three together are 32.14%. Ten companies are 65.87% of the fund; the other 13 share the rest. Among the 192 bond funds measured here, TDTT behaves like 14.9 holdings against a median of 236.4 — 16.7 times more concentrated than the median. Across 27 quarterly filings TDTT has held roughly steady since 2019-10-31 (16.5 then, 15.6 now). Between the 2026-01-31 and 2026-04-30 filings 0 positions were added and 2 dropped; 10.4% of the weight moved.
Each sentence is read from the fund's own SEC filing; the class median is computed across the comparable bond funds on this site. Nothing here is a view on the fund.
Every filing since 2019
27Between 2019-10-31 and 2026-04-30, TDTT went from behaving like 16.5 equally weighted positions to 15.6 — 6% fewer, while its top ten went from 64.7% to 65.41% of net assets. Read across the funds on the concentration-over-time table.
| Period | Holdings | Effective | Top 10 | Largest |
|---|---|---|---|---|
| 2026-04-30 | 22 | 15.6 | 65.41% | 10.83% |
| 2026-01-31 | 24 | 15.6 | 62.77% | 12.28% |
| 2025-10-31 | 23 | 16 | 64.29% | 10.76% |
| 2025-07-31 | 25 | 18.5 | 58.47% | 9.87% |
| 2025-04-30 | 25 | 19.2 | 58.15% | 9.14% |
| 2025-01-31 | 27 | 21.8 | 52.46% | 8.68% |
| 2024-10-31 | 26 | 20.2 | 55.57% | 9.52% |
| 2024-07-31 | 27 | 21 | 54.5% | 8.94% |
Earlier filings (19 more, back to 2019-10-31)
| Period | Holdings | Effective | Top 10 | Largest |
|---|---|---|---|---|
| 2024-04-30 | 25 | 20 | 56.24% | 9.2% |
| 2024-01-31 | 28 | 23.1 | 51.07% | 7.87% |
| 2023-10-31 | 27 | 22.4 | 52.26% | 8.07% |
| 2023-07-31 | 27 | 21.3 | 54.51% | 8.59% |
| 2023-04-30 | 26 | 20.4 | 56.14% | 8.77% |
| 2023-01-31 | 27 | 17.1 | 60.97% | 11.65% |
| 2022-10-31 | 24 | 18.1 | 61.17% | 10.61% |
| 2022-07-31 | 21 | 14.3 | 69.43% | 12.51% |
| 2022-04-30 | 22 | 12.8 | 71.13% | 13.96% |
| 2022-01-31 | 20 | 12.9 | 72.23% | 14.01% |
| 2021-10-31 | 19 | 13.1 | 73.95% | 12.33% |
| 2021-07-31 | 19 | 13.1 | 73.96% | 12.4% |
| 2021-04-30 | 19 | 13.2 | 73.79% | 12.28% |
| 2021-01-31 | 22 | 13.5 | 72.27% | 12.05% |
| 2020-10-31 | 21 | 16.7 | 63.99% | 10.05% |
| 2020-07-31 | 22 | 15.5 | 67.03% | 10.68% |
| 2020-04-30 | 21 | 17.5 | 62.28% | 9.67% |
| 2020-01-31 | 20 | 14.6 | 67.49% | 12.18% |
| 2019-10-31 | 21 | 16.5 | 64.7% | 10.02% |
One row per filed reporting period, newest first, read from EDGAR. Quarterly because that is the public filing cadence. Rows marked * are published but held out of the comparison above; the methodology page says when and why.
Largest positions, as filed
as of 2026-04-30The 15 largest of 23 positions in TDTT's Form N-PORT, weight as a share of net assets, securities-lending collateral excluded. Every position, every quarter: TDTT.csv.gz.
| # | Position | Weight | Cumulative |
|---|---|---|---|
| 1 | United States of America | 10.83% | 10.8% |
| 2 | United States of America | 10.79% | 21.6% |
| 3 | United States of America | 10.75% | 32.4% |
| 4 | United States of America | 9.59% | 42.0% |
| 5 | United States of America | 5.16% | 47.1% |
| 6 | United States of America | 3.76% | 50.9% |
| 7 | United States of America | 3.74% | 54.6% |
| 8 | United States of America | 3.67% | 58.3% |
| 9 | United States of America | 3.58% | 61.9% |
| 10 | United States of America | 3.53% | 65.4% |
| 11 | United States of America | 3.52% | 68.9% |
| 12 | United States of America | 3.46% | 72.4% |
| 13 | United States of America | 3.43% | 75.8% |
| 14 | United States of America | 3.40% | 79.2% |
| 15 | United States of America | 3.39% | 82.6% |
Returns the fund reported
2019-08 – 2026-04Monthly total returns from Item B.5 of TDTT's own filings, 81 months on record. Not computed here and not from a price feed.
Cross-checked against a series computed separately from prices: median difference 0.08 percentage points over 81 months, which is roughly the distributions. Every month with the filing it came from: TDTT.json · all funds.
Who borrows TDTT's shares
2026-07-31The fund lends its holdings, and Item B.4.a of the filing names every firm holding them. At 2026-07-31, $43m was out to 1 borrower.
| Borrower | On loan | Share of the loan |
|---|---|---|
| BofA Securities, Inc. | $43m | 100.0% |
The filing reports no cash collateral position against this loan. Collateral taken in a form the fund does not hold as a position does not appear in N-PORT, so this is silence rather than absence. What the collateral figure can and cannot show. Every quarter TDTT has filed, with each borrower: TDTT.json · all funds.
Since the previous filing
2026-01-31 → 2026-04-3024 positions became 22: 0 added (0.0% of the fund at the later date), 2 dropped (5.2% at the earlier date). Half the sum of all weight changes, a turnover proxy: 10.4%. Positions are matched on identifiers, so a security whose identifier changed shows as one drop and one add. Every filing of TDTT compared this way, as a feed: changes.xml · all funds: filings received.
| Largest increases | 2026-01-31 | 2026-04-30 | Largest decreases | 2026-01-31 | 2026-04-30 |
|---|---|---|---|---|---|
| United States of America | 3.81% | 10.83% | United States of America | 12.28% | 10.75% |
| United States of America | 1.88% | 3.76% | United States of America | 12.28% | 10.79% |
| United States of America | 3.55% | 3.67% | United States of America | 11.01% | 9.59% |
| United States of America | 3.41% | 3.53% | United States of America | 5.90% | 5.16% |
| United States of America | 3.35% | 3.46% | |||
| United States of America | 3.02% | 3.14% |
Gone: United States of America (3.42%), United States of America (1.80%).
Asset categories and pricing
as of 2026-07-31100.00% debt as filed; 0.0% carried at a quoted market price (fair-value level 1). Categories and levels are the filer's; what a low level-1 share does and does not mean is in the measure's page.
Neighbours by effective holdings, debt funds
10Every measured debt fund lined up by how many holdings it behaves like; these sit either side of TDTT (14.9). Same filings, same arithmetic. Position in this list says nothing about which fund is better.
| Fund | Reports | Behaves like | Top ten | As of |
|---|---|---|---|---|
| IEF iShares 7-10 Year Treasury Bond ETF | 16 | 12.5 | 85.53% | 2026-05-31 |
| CSHI NEOS Enhanced Income 1-3 Month T-Bill ETF | 19 | 13.2 | 78.04% | 2026-06-30 |
| TDTF FlexShares iBoxx 5-Year Target Duration TIPS Index Fund | 17 | 13.5 | 71.87% | 2026-07-31 |
| SDCI USCF SummerHaven Dynamic Commodity Strategy No K-1 Fund | 31 | 13.5 * | 73.97% | 2026-06-30 |
| LTPZ PIMCO 15+ Year U.S. TIPS Index Exchange-Traded Fund | 16 | 13.6 | 78.33% | 2026-06-30 |
| ZROZ PIMCO 25+ Year Zero Coupon U.S. Treasury Index Exchange-Traded Fund | 20 | 19.8 | 53.29% | 2026-06-30 |
| IBHF iShares iBonds 2026 Term High Yield and Income ETF | 117 | 20.2 | 42.17% | 2026-07-31 |
| IBDR iShares iBonds Dec 2026 Term Corporate ETF | 230 | 21.2 | 31.6% | 2026-07-31 |
| FLGV Franklin U.S. Treasury Bond ETF | 49 | 21.8 | 57.41% | 2026-06-30 |
| VBIL Vanguard 0-3 Month Treasury Bill ETF | 27 | 22.4 | 54.26% | 2026-06-30 |
Essays that examine TDTT
0Mentions are detected across the full text of every article, so an appearance may be a passing comparison rather than the subject. Nothing here is a recommendation to buy or sell — see the disclaimer.