Who owns iShares Core 1-5 Year USD Bond ETF?
Institutional ownership of ISTB from SEC Form 13F filings across 217 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
217
13F holders
$2.11B
value, 2026 filers
54.3%
of shares outstanding (57.1M sh)
30
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30· % of fund = share of the manager's own book · % of co. = share of ISTB's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | Acorns Advisers, LLC | 12.8M | $616,069 | 4.0% | 12.1% | +8.0% |
| 2 | BlackRock, Inc. | 7.8M | $374.2M | 0.0% | 7.4% | +35.4% |
| 3 | STATE OF WISCONSIN INVESTMENT BOARD | 5.5M | $267.8M | 0.5% | 5.3% | +2.5% |
| 4 | Sixth Street Partners Management Company, L.P.NEW | 2.6M | $126.7M | 21.9% | 2.5% | new |
| 5 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 2.6M | $126.7M | 0.0% | 2.5% | +2.2% |
| 6 | Triad Wealth Partners, LLCNEW | 2.6M | $124.7M | 7.4% | 2.5% | new |
| 7 | RAYMOND JAMES FINANCIAL INC | 2.4M | $116.8M | 0.0% | 2.3% | +5.8% |
| 8 | JONES FINANCIAL COMPANIES LLLP | 2.1M | $99.4M | 0.0% | 2% | +16.7% |
| 9 | Mariner, LLC | 1.4M | $68.0M | 0.1% | 1.3% | +6.7% |
| 10 | MORGAN STANLEY | 1.1M | $54.0M | 0.0% | 1.1% | +20.0% |
| 11 | Apella Capital, LLC | 1.1M | $52.2M | 0.7% | 1% | +14.5% |
| 12 | UBS Group AG | 983,998 | $47.5M | 0.0% | 0.9% | +4.5% |
| 13 | JPMORGAN CHASE & CO | 967,738 | $46.7M | 0.0% | 0.9% | -1.9% |
| 14 | BANK OF AMERICA CORP /DE/ | 941,481 | $45.4M | 0.0% | 0.9% | +2.3% |
| 15 | LPL Financial LLC | 852,550 | $41.1M | 0.0% | 0.8% | -3.8% |
| 16 | BARTLETT & CO. WEALTH MANAGEMENT LLC | 852,449 | $41.1M | 0.5% | 0.8% | +15.0% |
| 17 | WELLS FARGO & COMPANY/MN | 711,800 | $34.3M | 0.0% | 0.7% | +3.9% |
| 18 | AMERIPRISE FINANCIAL INC | 674,028 | $32.5M | 0.0% | 0.6% | -7.5% |
| 19 | ENVESTNET ASSET MANAGEMENT INC | 609,935 | $29.4M | 0.0% | 0.6% | +9.4% |
| 20 | PITTENGER & ANDERSON INC | 552,509 | $26.7M | 1.0% | 0.5% | +2.0% |
| 21 | ROYAL BANK OF CANADA | 543,043 | $26.2M | 0.0% | 0.5% | +3.4% |
| 22 | Bank of New York Mellon Corp | 443,088 | $21.4M | 0.0% | 0.4% | +0.7% |
| 23 | CLEAR WAVE WEALTH MANAGEMENT LLC | 440,393 | $21.2M | 3.9% | 0.4% | +6.9% |
| 24 | Cambridge Investment Research Advisors, Inc. | 378,512 | $18,264 | 0.0% | 0.4% | +108.5% |
| 25 | Orion Porfolio Solutions, LLC | 328,255 | $15.8M | 0.1% | 0.3% | +17.9% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.