Who owns iShares MBS ETF?
Institutional ownership of MBB from SEC Form 13F filings across 501 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.
501
13F holders
$28.54B
value, 2026 filers
72.7%
of shares outstanding (310.5M sh)
45
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 MBB's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BANK OF AMERICA CORP /DE/ | 68.3M | $6.45B | 0.4% | 16% | +3.1% |
| 2 | JPMORGAN CHASE & CO | 37.8M | $3.59B | 0.2% | 8.9% | +1.7% |
| 3 | ENVESTNET ASSET MANAGEMENT INC | 30.9M | $2.92B | 0.7% | 7.2% | +6.9% |
| 4 | LPL Financial LLC | 27.1M | $2.56B | 0.6% | 6.4% | -3.1% |
| 5 | UBS Group AG | 18.5M | $1.75B | 0.2% | 4.3% | -15.3% |
| 6 | AMERIPRISE FINANCIAL INC | 13.7M | $1.29B | 0.3% | 3.2% | +3.8% |
| 7 | MORGAN STANLEY | 11.5M | $1.09B | 0.1% | 2.7% | +6.9% |
| 8 | TRUIST FINANCIAL CORP | 5.5M | $523.8M | 0.6% | 1.3% | -4.1% |
| 9 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 4.3M | $404.4M | 0.1% | 1% | -0.5% |
| 10 | STIFEL FINANCIAL CORP | 3.7M | $353.7M | 0.3% | 0.9% | +0.9% |
| 11 | PNC Financial Services Group, Inc. | 3.3M | $309.9M | 0.2% | 0.8% | +5.6% |
| 12 | Allworth Financial LP | 3.0M | $286.9M | 1.2% | 0.7% | -8.9% |
| 13 | WELLS FARGO & COMPANY/MN | 2.9M | $275.3M | 0.0% | 0.7% | +7.4% |
| 14 | Merit Financial Group, LLC | 2.9M | $271.1M | 1.7% | 0.7% | +110.3% |
| 15 | BANK OF MONTREAL /CAN/ | 2.8M | $265.0M | 0.1% | 0.7% | -18.2% |
| 16 | Bank of New York Mellon Corp | 2.4M | $228.8M | 0.0% | 0.6% | +4.6% |
| 17 | SEI INVESTMENTS CO | 2.4M | $225.0M | 0.2% | 0.6% | +8.5% |
| 18 | Composition Wealth, LLC | 2.4M | $222.4M | 2.6% | 0.6% | +16.2% |
| 19 | BlackRock, Inc. | 2.3M | $218.5M | 0.0% | 0.5% | +4.0% |
| 20 | Cetera Investment Advisers | 2.1M | $202.9M | 0.2% | 0.5% | +5.9% |
| 21 | Envestnet Portfolio Solutions, Inc. | 2.1M | $200.3M | 1.0% | 0.5% | +9.8% |
| 22 | OneDigital Investment Advisors LLC | 1.9M | $178.9M | 1.5% | 0.4% | +6.4% |
| 23 | MML INVESTORS SERVICES, LLC | 1.8M | $167.3M | 0.3% | 0.4% | +25.3% |
| 24 | EXCHANGE TRADED CONCEPTS, LLC | 1.7M | $164.6M | 0.8% | 0.4% | +136.7% |
| 25 | GOLDMAN SACHS GROUP INC | 1.7M | $162.2M | 0.0% | 0.4% | +467.9% |
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.