257 essays 1,087 funds measured independent · not paid by any fund or issuer we cover

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 2026-07-31
23 Positions reported
14.9 Effective holdings
1.5× Concentration multiple
65.87% Top ten weight

Computed 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 2026-07-31

TDTT'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

27

Between 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.

PeriodHoldingsEffective Top 10Largest
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)
PeriodHoldingsEffectiveTop 10Largest
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 2026-04-30

The 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.

#PositionWeightCumulative
1United States of America10.83%10.8%
2United States of America10.79%21.6%
3United States of America10.75%32.4%
4United States of America9.59%42.0%
5United States of America5.16%47.1%
6United States of America3.76%50.9%
7United States of America3.74%54.6%
8United States of America3.67%58.3%
9United States of America3.58%61.9%
10United States of America3.53%65.4%
11United States of America3.52%68.9%
12United States of America3.46%72.4%
13United States of America3.43%75.8%
14United States of America3.40%79.2%
15United States of America3.39%82.6%

Returns the fund reported

2019-08 – 2026-04

Monthly total returns from Item B.5 of TDTT's own filings, 81 months on record. Not computed here and not from a price feed.

3.9%Last twelve months filed
28%Whole series, compounded
2.5%Best month
-3.9%Worst month

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

2026-07-31

The 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.

BorrowerOn loanShare 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 → 2026-04-30

24 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 increases2026-01-312026-04-30Largest decreases2026-01-312026-04-30
United States of America3.81%10.83% United States of America12.28%10.75%
United States of America1.88%3.76% United States of America12.28%10.79%
United States of America3.55%3.67% United States of America11.01%9.59%
United States of America3.41%3.53% United States of America5.90%5.16%
United States of America3.35%3.46%
United States of America3.02%3.14%

Gone: United States of America (3.42%), United States of America (1.80%).

Asset categories and pricing

as of 2026-07-31

100.00% 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

10

Every 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.

FundReportsBehaves likeTop tenAs 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

0

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