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Fund · iShares 1-3 Year Treasury Bond ETF · measured from SEC filings

SHY holdings

SHY reports 90 holdings and behaves like 83.2 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

Read this figure with the following in mind

1.6% of net assets is securities-lending cash collateral, excluded from the figure; counted as filed the fund would read 82.7

The figure below is what the filing says, published unchanged. What it may not do is sit beside a plain long-only fund and be read as the same quantity. How comparability is decided.

90 Positions reported
83.2 Effective holdings
1.1× Concentration multiple
16.11% 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: 1.81% at a quoted market price (level 1), one issuer country.

What stands out

as of 2026-05-31

SHY's largest investment is U.S. Treasury Notes at 1.96% of net assets. U.S. Treasury Notes and U.S. Treasury Notes follow; the three together are 5.5%. Ten companies are 16.11% of the fund; the other 80 share the rest. Among the 192 bond funds measured here, SHY behaves like 83.2 holdings against a median of 236.4 — 2.9 times more concentrated than the median. Across 27 quarterly filings SHY has become less concentrated: it behaved like 31.4 at 2019-11-30 and 83.2 at 2026-05-31. Between the 2026-02-28 and 2026-05-31 filings 13 positions were added and 13 dropped; 13.6% 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, SHY went from behaving like 31.4 equally weighted positions to 83.2 — 165% more, while its top ten went from 45.2% to 16.11% of net assets. Read across the funds on the concentration-over-time table.

PeriodHoldingsEffective Top 10Largest
2026-05-31 90 83.2 16.11% 1.97%
2026-02-28 90 81.1 17.17% 2.22%
2025-11-30 89 79.2 17.88% 2.34%
2025-08-31 117 79.4 17.91% 2.34%
2025-05-31 122 77 19.26% 2.55%
2025-02-28 123 76.3 20.22% 2.65%
2024-11-30 119 60.9 26.65% 4.93%
2024-08-31 113 56.2 29.04% 4.92%
Earlier filings (19 more, back to 2019-11-30)
PeriodHoldingsEffectiveTop 10Largest
2024-05-31 102 51.1 32.28% 5.25%
2024-02-29 92 48.1 34.34% 5.25%
2023-11-30 81 44.1 35.9% 5.25%
2023-08-31 74 37.8 39.95% 6.13%
2023-05-31 78 33.3 43.83% 6.07%
2023-02-28 76 34.1 42.84% 6.06%
2022-11-30 78 37.3 39.68% 6.21%
2022-08-31 80 25.4 51.55% 9.12%
2022-05-31 69 24.4 52.95% 9.24%
2022-02-28 73 24.4 53.55% 9.2%
2021-11-30 78 20.3 56.26% 13.45%
2021-08-31 96 31.7 44.22% 8.1%
2021-05-31 88 36.3 41.65% 7.19%
2021-02-28 91 35.4 44.01% 6.11%
2020-11-30 79 31.2 48.66% 6.24%
2020-08-31 74 30.3 49.62% 6.11%
2020-05-31 78 32.2 46.65% 6.06%
2020-02-29 100 28.6 49.22% 8.34%
2019-11-30 92 31.4 45.2% 8.38%

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
SHY vs IEF 0.2% 1 43.3
SHY vs TLT 0.2% 1 91

As filed, collateral included

1.63% collateral

SHY's filing lists 91 positions including 1.63% of net assets in securities-lending cash collateral. Counted as filed the fund reads 82.7 effective holdings with a top ten of 16.21%; on its own investments — the figure above — it reads 83.2 with a top ten of 16.11%. The collateral is matched by a liability and is not a holding the fund chose; since 2026-09-18 every figure on this site sets it aside (methodology). Both numbers are in the data.

Largest positions, as filed

as of 2026-05-31

The 15 largest of 90 positions in SHY's Form N-PORT, weight as a share of net assets, securities-lending collateral excluded. Every position, every quarter: SHY.csv.gz.

#PositionWeightCumulative
1United States of America1.97%2.0%
2United States of America1.85%3.8%
3United States of America1.72%5.5%
4United States of America1.62%7.2%
5United States of America1.61%8.8%
6United States of America1.53%10.3%
7United States of America1.49%11.8%
8United States of America1.46%13.3%
9United States of America1.44%14.7%
10United States of America1.41%16.1%
11United States of America1.40%17.5%
12United States of America1.39%18.9%
13United States of America1.39%20.3%
14United States of America1.39%21.7%
15United States of America1.37%23.0%

Returns the fund reported

2019-09 – 2026-05

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

3.3%Last twelve months filed
13%Whole series, compounded
1.6%Best month
-1.4%Worst month

Cross-checked against a series computed separately from prices: median difference 0.02 percentage points over 81 months, which is roughly the distributions. Every month with the filing it came from: SHY.json · all funds.

Who borrows SHY's shares

2026-05-31

The fund lends its holdings, and Item B.4.a of the filing names every firm holding them. At 2026-05-31, $403m was out to 2 borrowers, 1.59% of net assets. The largest, STATE STREET BANK & TRUST COMPANY, held 87.7% of it.

BorrowerOn loanShare of the loan
STATE STREET BANK & TRUST COMPANY $354m 87.7%
Societe Generale $50m 12.3%

Cash collateral reported against the loan: 1.63% of net assets, 102.8% 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 SHY has filed, with each borrower: SHY.json · all funds.

Since the previous filing

2026-02-28 → 2026-05-31

90 positions became 90: 13 added (12.9% of the fund at the later date), 13 dropped (13.4% at the earlier date). Half the sum of all weight changes, a turnover proxy: 13.6%. Positions are matched on identifiers, so a security whose identifier changed shows as one drop and one add. Every filing of SHY 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 America0.66%1.13% BlackRock Funds III0.27%0.20%
United States of America1.17%1.19% United States of America1.26%1.25%
United States of America1.38%1.40% United States of America1.26%1.25%
United States of America1.17%1.19% United States of America1.14%1.13%
United States of America1.60%1.62% United States of America1.24%1.24%
United States of America0.99%1.00% United States of America1.08%1.07%

New: United States of America (1.53%), United States of America (1.37%), United States of America (1.30%), United States of America (1.17%), United States of America (1.08%), United States of America (1.00%). Gone: United States of America (2.22%), United States of America (1.63%), United States of America (1.56%), United States of America (1.54%), United States of America (1.20%), United States of America (1.15%).

Asset categories and pricing

as of 2026-05-31

98.19% debt, 1.81% short-term investment as filed; 1.8% 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 SHY (83.2). Same filings, same arithmetic. Position in this list says nothing about which fund is better.

FundReportsBehaves likeTop tenAs of
SCHQ Schwab Long-Term U.S. Treasury ETF 100 75.9 21.59% 2026-06-30
GTO Invesco Total Return Bond ETF 1,793 78.9 29.04% 2026-07-31
SYSB iShares Systematic Bond ETF 838 79 26.34% 2026-07-31
JCPB JPMorgan Core Plus Bond ETF 2,677 81.3 21.19% 2026-05-31
SCHR Schwab Intermediate-Term U.S. Treasury ETF 102 82.4 19.13% 2026-06-30
VGIT Vanguard Intermediate-Term Treasury Index Fund 104 84 18.93% 2026-05-31
CGCP Capital Group Core Plus Income ETF 1,476 84.5 * 25.35% 2026-06-30
ANGL VanEck Fallen Angel High Yield Bond ETF 129 86.1 22.76% 2026-07-31
APLU Allspring Core Plus ETF 543 86.2 26.63% 2026-05-31
VGSH Vanguard Short-Term Treasury Index Fund 92 88.2 14% 2026-05-31

Essays that examine SHY

2

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.