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

Fund · iShares 20+ Year Treasury Bond ETF · measured from SEC filings

TLT holdings

TLT reports 47 holdings and behaves like 31.3 equally weighted ones, computed from its SEC Form N-PORT filing for 2026-05-31. The fact sheet publishes the first number; this page computes the second, and traces it across 27 quarters of filings.

Measured concentration

as of 2026-05-31
47 Positions reported
31.3 Effective holdings
1.5× Concentration multiple
42.23% 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: 1.06% at a quoted market price (level 1), one issuer country.

What stands out

as of 2026-05-31

TLT's largest investment is U.S. Treasury Bonds at 4.58% of net assets. U.S. Treasury Bonds and U.S. Treasury Bonds follow; the three together are 13.54%. Ten companies are 42.23% of the fund; the other 37 share the rest. Among the 192 bond funds measured here, TLT behaves like 31.3 holdings against a median of 236.4 — 7.7 times more concentrated than the median. Across 27 quarterly filings TLT has become less concentrated: it behaved like 19.6 at 2019-11-30 and 31.3 at 2026-05-31. Between the 2026-02-28 and 2026-05-31 filings 2 positions were added and 1 dropped; 6.2% 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 2019-11-30 and 2026-05-31, TLT went from behaving like 19.6 equally weighted positions to 31.3 — 60% more, while its top ten went from 61.05% to 42.23% of net assets. Read across the funds on the concentration-over-time table.

PeriodHoldingsEffective Top 10Largest
2026-05-31 47 31.3 42.23% 4.61%
2026-02-28 46 30.6 43.74% 4.87%
2025-11-30 45 30 44.19% 5.05%
2025-08-31 44 29.7 44.99% 5.77%
2025-05-31 42 28.1 47.28% 6.41%
2025-02-28 47 27.5 48.41% 6.44%
2024-11-30 47 27.5 48.06% 6.45%
2024-08-31 46 26.2 49.59% 7.05%
Earlier filings (19 more, back to 2019-11-30)
PeriodHoldingsEffectiveTop 10Largest
2024-05-31 45 24.7 51.73% 7.87%
2024-02-29 43 24.2 53.34% 8.13%
2023-11-30 42 24 53.37% 8.13%
2023-08-31 41 22.4 56.35% 9.54%
2023-05-31 36 19.5 61.46% 10.89%
2023-02-28 35 19.4 61.7% 10.88%
2022-11-30 33 18.7 63.69% 11.04%
2022-08-31 33 17.7 64.45% 12.84%
2022-05-31 33 17.9 63.96% 12.89%
2022-02-28 36 19.3 61.34% 11.15%
2021-11-30 37 18.7 62.67% 11.74%
2021-08-31 31 19.6 60.41% 10.28%
2021-05-31 38 20.3 59.31% 8.67%
2021-02-28 38 21.4 57.13% 8.67%
2020-11-30 51 22.5 54.77% 8.76%
2020-08-31 47 20.7 59.13% 9.38%
2020-05-31 45 20.5 59.51% 9.41%
2020-02-29 40 20.3 59.53% 9.2%
2019-11-30 37 19.6 61.05% 8.88%

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.

Compared with, in the essays

2

Overlap with other funds

2

Measured against every other fund on this site, from the same filings. Combined effective holdings is how the pair behaves held in equal size.

WithOverlapSharedCombined effective
TLT vs IEF 1.06% 1 35.6
TLT vs SHY 0.2% 1 91

Largest positions, as filed

as of 2026-05-31

The 15 largest of 47 positions in TLT's Form N-PORT, weight as a share of net assets, securities-lending collateral excluded. Every position, every quarter: TLT.csv.gz.

#PositionWeightCumulative
1United States of America4.61%4.6%
2United States of America4.53%9.1%
3United States of America4.49%13.6%
4United States of America4.43%18.1%
5United States of America4.18%22.3%
6United States of America4.07%26.3%
7United States of America4.06%30.4%
8United States of America3.98%34.4%
9United States of America3.97%38.3%
10United States of America3.89%42.2%
11United States of America3.83%46.1%
12United States of America3.65%49.7%
13United States of America3.49%53.2%
14United States of America2.99%56.2%
15United States of America2.92%59.1%

Returns the fund reported

2019-09 – 2026-05

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

3.9%Last twelve months filed
-29%Whole series, compounded
9.9%Best month
-9.5%Worst month

Cross-checked against a series computed separately from prices: median difference 0.07 percentage points over 81 months, which is roughly the distributions. Every month with the filing it came from: TLT.json · all funds.

Who borrows TLT's shares

2023-02-28

The fund lends its holdings, and Item B.4.a of the filing names every firm holding them. At 2023-02-28, $6m was out to 1 borrower, 0.02% of net assets.

BorrowerOn loanShare of the loan
CITIGROUP GLOBAL MARKETS INC. $6m 100.0%

Cash collateral reported against the loan: 0.02% of net assets, 106.1% of the amount lent. That is a floor on the collateral, not the whole of it — collateral the fund does not hold as a position is not in this filing, so a figure under 100% is not evidence of under-collateralisation. How that figure behaves across all funds. Every quarter TLT has filed, with each borrower: TLT.json · all funds.

Since the previous filing

2026-02-28 → 2026-05-31

46 positions became 47: 2 added (4.5% of the fund at the later date), 1 dropped (0.1% at the earlier date). Half the sum of all weight changes, a turnover proxy: 6.2%. Positions are matched on identifiers, so a security whose identifier changed shows as one drop and one add. Every filing of TLT compared this way, as a feed: changes.xml · all funds: filings received.

Largest increases2026-02-282026-05-31Largest decreases2026-02-282026-05-31
United States of America1.33%2.56% United States of America1.82%0.38%
United States of America2.71%2.99% United States of America2.24%1.03%
United States of America2.82%2.84% United States of America3.72%2.75%
United States of America4.42%4.43% United States of America4.78%4.07%
United States of America4.49%4.49% United States of America4.87%4.18%
United States of America2.64%2.65% United States of America1.24%0.90%

New: United States of America (3.98%), United States of America (0.54%). Gone: United States of America (0.11%).

Asset categories and pricing

as of 2026-05-31

98.94% debt, 1.06% short-term investment as filed; 1.1% 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 TLT (31.3). Same filings, same arithmetic. Position in this list says nothing about which fund is better.

FundReportsBehaves likeTop tenAs of
AGZ iShares Agency Bond ETF 100 25.5 50.6% 2026-05-31
ULST State Street(R) Ultra Short Term Bond ETF 319 26.1 48.18% 2026-06-30
TIPX State Street(R) SPDR(R) Bloomberg 1-10 Year TIPS ETF 33 29.4 39.01% 2026-06-30
GOVI Invesco Equal Weight 0-30 Year Treasury ETF 31 30 33.82% 2026-05-31
IBTJ iShares iBonds Dec 2029 Term Treasury ETF 35 30.7 40.15% 2026-07-31
FSTB Fidelity Short-Term Bond Fund 463 33.1 44.65% 2026-05-31
APCB ActivePassive Core Bond ETF 1,843 33.8 32.97% 2026-05-31
SCHP Schwab U.S. TIPS ETF 49 36.2 36.43% 2026-06-30
TIP iShares TIPS Bond ETF 49 36.3 35.76% 2026-07-31
TLH iShares 10-20 Year Treasury Bond ETF 67 37.2 37.79% 2026-05-31

Measures applied in the essays

6

Essays that examine TLT

6

Mentions 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.