Who owns ISTB?
iShares Core 1-5 Year USD Bond ETF · iShares
398 institutions reported holding ISTB, worth $3.8B, in Form 13F filings for June 30, 2026.
Top 10 institutional holders of ISTB
| Firm | Location | Value | Shares | Change |
|---|---|---|---|---|
| Acorns Advisers, LLC | Irvine, CA | $616.1M | 12,768,271 | +946,675 shares |
| BlackRock, Inc. | New York, NY | $374.2M | 7,755,189 | +2,027,231 shares |
| State of Wisconsin Investment Board | Madison, WI | $267.8M | 5,549,725 | +134,700 shares |
| Charles Schwab Investment Management Inc. | San Francisco, CA | $126.7M | 2,625,257 | +56,362 shares |
| Triad Wealth Partners, LLC | Lawrence, KS | $124.7M | 2,603,382 | New position |
| Raymond James Financial Inc. | St. Petersburg, FL | $116.8M | 2,421,615 | +131,957 shares |
| Jones Financial Companies LLLP | Des Peres, MO | $99.4M | 2,057,377 | +294,900 shares |
| Mariner, LLC | Overland Park, KS | $68.0M | 1,409,398 | +88,637 shares |
| Spinnaker Trust | Portland, ME | $66.1M | 1,370,384 | −9,852 shares |
| Townsend & Associates, Inc | Westminster, CO | $59.6M | 1,240,631 | +35,064 shares |
The full list comes with the Advisors and Institutions package.
Sign up to see them allFrom SEC Form 13F, for managers with $100M+ in US securities. Change compares June 30, 2026 with March 31, 2026. “New position” means no holding in the prior filing we have.
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Frequently asked questions
Who owns ISTB?
398 institutional managers reported holding ISTB in Form 13F filings for June 30, 2026, worth $3.8B in total. The largest reported position was held by Acorns Advisers, LLC, at $616.1M.
Did institutions buy or sell ISTB last quarter?
Reported 13F value rose 11.6% from March 31, 2026, which includes price moves as well as buying and selling. 44 firms reported a new position and 34 sold all of theirs.
What is a Form 13F?
A quarterly report filed with the SEC by institutional investment managers with $100 million or more in qualifying US securities. It lists their long positions at quarter end. It doesn't cover retail investors, cash, short positions, or managers under the threshold, so it shows part of a fund's ownership, not all of it.
How often is ISTB ownership data updated?
13F filings are due 45 days after each quarter ends. The next set is due around mid-November. Positions can be up to about four and a half months old by the time a new set arrives.