Who owns BlackRock MuniYield Quality Fund III, Inc.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of MYI from SEC Form 13F filings across 156 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.
As of the 2026-06-30 reporting period, 156 institutions disclosed 38.9M shares of BlackRock MuniYield Quality Fund III, Inc. worth $431.8M — about 58.5% of shares outstanding; the largest disclosed holder is Karpus Management, Inc.. Source: SEC Form 13F filings, parsed by EvidInvest.
156
13F holders
$431.8M
value, 2026 filers
58.5%
of shares outstanding (38.9M sh)
19
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 MYI's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | Karpus Management, Inc. | 5.4M | $60.5M | 1.7% | 8.2% | -4.1% |
| 2 | RIVERNORTH CAPITAL MANAGEMENT, LLC | 4.8M | $52.9M | 2.5% | 7.2% | -9.4% |
| 3 | MORGAN STANLEY | 4.6M | $51.5M | 0.0% | 7% | +9.4% |
| 4 | GUGGENHEIM CAPITAL LLC | 2.2M | $24.1M | 0.2% | 3.3% | -3.5% |
| 5 | SIT INVESTMENT ASSOCIATES INC | 1.8M | $20.4M | 0.4% | 2.8% | -32.1% |
| 6 | ROBINSON CAPITAL MANAGEMENT, LLC | 1.6M | $18.0M | 7.9% | 2.4% | 0.0% |
| 7 | RAYMOND JAMES FINANCIAL INC | 1.5M | $16.6M | 0.0% | 2.3% | -6.3% |
| 8 | UBS Group AG | 1.5M | $16.6M | 0.0% | 2.3% | +74.2% |
| 9 | STIFEL FINANCIAL CORP | 1.2M | $13.1M | 0.0% | 1.8% | +9.2% |
| 10 | BANK OF AMERICA CORP /DE/ | 1.2M | $13.0M | 0.0% | 1.8% | -0.1% |
| 11 | VAN ECK ASSOCIATES CORP | 973,208 | $10.8M | 0.0% | 1.5% | +2.6% |
| 12 | Pathstone Holdings, LLC | 733,117 | $8.1M | 0.0% | 1.1% | -18.1% |
| 13 | WELLS FARGO & COMPANY/MN | 681,631 | $7.6M | 0.0% | 1% | +9.7% |
| 14 | Allspring Global Investments Holdings, LLC | 592,962 | $6.6M | 0.0% | 0.9% | +10.3% |
| 15 | LPL Financial LLC | 583,047 | $6.5M | 0.0% | 0.9% | +8.5% |
| 16 | CITY OF LONDON INVESTMENT MANAGEMENT CO LTD | 527,505 | $5.9M | 0.4% | 0.8% | 0.0% |
| 17 | Allianz Asset Management GmbH | 490,934 | $5.5M | 0.0% | 0.7% | 0.0% |
| 18 | Rockefeller Capital Management L.P. | 481,790 | $5.4M | 0.0% | 0.7% | +7.2% |
| 19 | MacKay Shields LLC | 439,004 | $4.9M | 0.2% | 0.7% | -16.6% |
| 20 | Capital Investment Advisors, LLC | 394,802 | $4.4M | 0.1% | 0.6% | -1.6% |
| 21 | MELFA WEALTH MANAGEMENT, INC. | 385,248 | $4.3M | 2.3% | 0.6% | -8.1% |
| 22 | Rareview Capital LLC | 385,009 | $4.0M | 2.3% | 0.6% | -16.5% |
| 23 | COHEN & STEERS, INC. | 383,952 | $4.3M | 0.0% | 0.6% | -2.1% |
| 24 | ROYAL BANK OF CANADA | 348,553 | $3.9M | 0.0% | 0.5% | -0.3% |
| 25 | COMMONWEALTH EQUITY SERVICES, LLC | 282,258 | $3.1M | 0.0% | 0.4% | +4.1% |
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.