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

Fund · iShares Broad USD Investment Grade Corporate Bond ETF · measured from SEC filings

USIG holdings

USIG reports 11,459 holdings and behaves like 6893.6 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

9.4% of net assets is securities-lending cash collateral, excluded from the figure; counted as filed the fund would read 110.8

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.

11,459 Positions reported
6893.6 Effective holdings
1.7× Concentration multiple
0.73% 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: 8.73% at a quoted market price (level 1), 43 issuer countries.

What stands out

as of 2026-05-31

USIG's largest investment is Anheuser-Busch Cos LLC / Anheuser-Busch InBev Worldwide Inc at 0.09% of net assets. Bank Of America Corp and Eagle Funding Luxco Sarl follow; the three together are 0.25%. Ten companies are 0.73% of the fund; the other 11,449 share the rest. Among the 192 bond funds measured here, USIG behaves like 6893.6 holdings against a median of 236.4 — 29.1 times the median. Across 27 quarterly filings USIG has become less concentrated: it behaved like 1999.4 at 2019-11-30 and 6893.6 at 2026-05-31. Between the 2026-02-28 and 2026-05-31 filings 550 positions were added and 386 dropped; 9.6% of the weight moved. the United States is the largest country at 80.29% of the portfolio, across 43 countries in the filing.

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, USIG went from behaving like 1999.4 equally weighted positions to 6893.6 — 245% more, while its top ten went from 2.65% to 0.73% of net assets. Read across the funds on the concentration-over-time table.

PeriodHoldingsEffective Top 10Largest
2026-05-31 11,459 6893.6 0.73% 0.09%
2026-02-28 11,295 6845.4 0.73% 0.08%
2025-11-30 11,175 6121 1.11% 0.45%
2025-08-31 11,036 6021.4 1.11% 0.49%
2025-05-31 10,997 6886.1 0.68% 0.09%
2025-02-28 10,647 6617.9 0.73% 0.1%
2024-11-30 10,507 6073.7 1.03% 0.37%
2024-08-31 10,362 5925.5 1.05% 0.4%
Earlier filings (19 more, back to 2019-11-30)
PeriodHoldingsEffectiveTop 10Largest
2024-05-31 10,343 6399.8 0.81% 0.13%
2024-02-29 10,177 6268.5 0.83% 0.14%
2023-11-30 9,988 6184.9 0.78% 0.11%
2023-08-31 9,806 5005.3 1.33% 0.61%
2023-05-31 9,700 3696.2 1.74% 1.04%
2023-02-28 9,631 4400.7 1.51% 0.8%
2022-11-30 9,434 2802 2.12% 1.4%
2022-08-31 9,340 4492.5 1.49% 0.74%
2022-05-31 9,253 3566.4 1.83% 1.07%
2022-02-28 8,939 2369.9 2.36% 1.57%
2021-11-30 8,776 3615.3 1.83% 0.98%
2021-08-31 8,483 3549.2 1.86% 0.96%
2021-05-31 8,229 3517.9 1.84% 0.93%
2021-02-28 7,837 2986.7 2.02% 1.07%
2020-11-30 7,638 3807.6 1.73% 0.57%
2020-08-31 7,269 3454.4 1.72% 0.76%
2020-05-31 6,649 3329.5 1.69% 0.7%
2020-02-29 6,341 2804.4 2.13% 1.02%
2019-11-30 6,074 1999.4 2.65% 1.56%

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.

As filed, collateral included

9.42% collateral

USIG's filing lists 11,460 positions including 9.42% of net assets in securities-lending cash collateral. Counted as filed the fund reads 110.8 effective holdings with a top ten of 10.08%; on its own investments — the figure above — it reads 6893.6 with a top ten of 0.73%. 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 11,459 positions in USIG's Form N-PORT, weight as a share of net assets, securities-lending collateral excluded. Every position, every quarter: listed with the point-in-time files, available on request.

#PositionWeightCumulative
1ANHEUSER-BUSCH CO/INBEV0.09%0.1%
2BANK OF AMERICA CORP0.09%0.2%
3EAGLE FUNDING LUXCO SARL0.08%0.3%
4CVS HEALTH CORP0.08%0.3%
5T-MOBILE USA INC0.07%0.4%
6GOLDMAN SACHS GROUP INC0.07%0.5%
7META PLATFORMS INC0.06%0.5%
8GOLDMAN SACHS GROUP INC0.06%0.6%
9GOLDMAN SACHS GROUP INC0.06%0.7%
10GOLDMAN SACHS GROUP INC0.06%0.7%
11PFIZER INVESTMENT ENTER0.06%0.8%
12AMAZON.COM INC0.06%0.8%
13BOEING CO0.06%0.9%
14CVS HEALTH CORP0.06%1.0%
15ABBVIE INC0.06%1.0%

By country of issuer

as of 2026-05-31

Share of USIG's own investments by the issuer country the filer reported (incorporation, not revenue). Each country links to every fund that holds it.

CountryShare
United States 78.41%
United Kingdom 3.81%
Canada 3.05%
Japan 2.21%
France 1.66%
Netherlands° 1.29%
Australia 1.26%
Cayman Islands° 0.90%

Returns the fund reported

2019-09 – 2026-05

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

6.2%Last twelve months filed
12%Whole series, compounded
5.7%Best month
-7.6%Worst month

Cross-checked against a series computed separately from prices: median difference 0.14 percentage points over 81 months, which is roughly the distributions. Every month with the filing it came from: USIG.json · all funds.

Who borrows USIG'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, $1.6bn was out to 27 borrowers, 9.13% of net assets. The largest, JP MORGAN SECURITIES LLC, held 22.3% of it.

BorrowerOn loanShare of the loan
JP MORGAN SECURITIES LLC $354m 22.3%
BARCLAYS BANK PLC $301m 19.0%
GOLDMAN SACHS & CO. $239m 15.0%
BNP PARIBAS PRIME BROKERAGE INTERNATIONAL LIMITED $107m 6.8%
DEUTSCHE BANK SECURITIES INC $94m 6.0%

Cash collateral reported against the loan: 9.42% of net assets, 103.2% 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 USIG has filed, with each borrower: USIG.json · all funds.

Since the previous filing

2026-02-28 → 2026-05-31

11,295 positions became 11,459: 550 added (4.7% of the fund at the later date), 386 dropped (3.0% at the earlier date). Half the sum of all weight changes, a turnover proxy: 9.6%. Positions are matched on identifiers, so a security whose identifier changed shows as one drop and one add. Every filing of USIG compared this way, as a feed: changes.xml · all funds: filings received.

Largest increases2026-02-282026-05-31Largest decreases2026-02-282026-05-31
BLACKROCK CASH FUNDS TREASURY SL AGENCY SHARES0.03%0.05% UBS GROUP AG0.04%0.02%
AMERICAN EXPRESS CO0.01%0.03% JPMORGAN CHASE & CO0.04%0.02%
FEDEX CORP0.00%0.02% BANK OF AMERICA CORP0.05%0.03%
BANK OF MONTREAL0.02%0.03% KRAFT HEINZ FOODS CO0.02%0.00%
CAPITAL ONE FINANCIAL CO0.00%0.01% JPMORGAN CHASE & CO0.05%0.03%
MORGAN STANLEY0.03%0.04% BECTON DICKINSON & CO0.02%0.00%

New: AMAZON.COM INC (0.06%), AMAZON.COM INC (0.05%), SALESFORCE INC (0.04%), AMAZON.COM INC (0.04%), BANK OF AMERICA CORP (0.04%), BANK OF AMERICA CORP (0.04%). Gone: WELLS FARGO & COMPANY (0.05%), T-MOBILE USA INC (0.04%), JPMORGAN CHASE & CO (0.04%), WELLS FARGO & COMPANY (0.03%), GOLDMAN SACHS GROUP INC (0.03%), CENTENE CORP (0.03%).

Asset categories and pricing

as of 2026-05-31

91.27% debt, 8.73% short-term investment as filed; 8.7% 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

5

Every measured debt fund lined up by how many holdings it behaves like; these sit either side of USIG (6893.6). Same filings, same arithmetic. Position in this list says nothing about which fund is better.

FundReportsBehaves likeTop tenAs of
LQD iShares iBoxx $ Investment Grade Corporate Bond ETF 3,136 1889.9 2.41% 2026-05-31
IGLB iShares 10+ Year Investment Grade Corporate Bond ETF 3,836 1905.3 2.64% 2026-05-31
SPIB State Street(R) SPDR(R) Portfolio Intermediate Term Corporate Bond ETF 5,147 2196.7 2.69% 2026-06-30
QLTA iShares Aaa - A Rated Corporate Bond ETF 3,502 2213.7 1.83% 2026-07-31
PZA Invesco National AMT-Free Municipal Bond ETF 6,664 3341.2 1.1% 2026-05-31

Essays that examine USIG

1
  • Why 2,017 IWM Holdings Read as 33: Securities Lending in the Russell 2000 ETF

    IWM, the iShares Russell 2000 ETF, files 2,017 holdings but our concentration measure read it as 33. The cause is a 17% cash-collateral position from securities lending, flagged in the filing itself; set it aside and the fund's own investments behave like about 840. Seventy-three funds on this site, including IJH, IJR, RSP, LQD and HYG, had the same problem. What we found, what we changed today, and what is still open.

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.