Latest Period
Q1 2026
Security Snapshot
BLACKROCK MUNIYIELD QUALITY FUND III, INC. - Common (MYI) Institutional Ownership
CUSIP: 09254E103
13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026
Institutions Reporting
152
Shares (Excl. Options)
40,824,817
Price
$10.51
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- Security type / class
- Equity / Common
- Symbol
- MYI on NYSE
- Shares outstanding
- 66,524,862
- Reported price per share
- $11.12
- Price from insider filings
- $11.12
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 40,824,817
- Total reported value
- $429,621,645
- Portfolio coverage rank
- 0%
- Share change
- +21,639,702
- Value change
- +$227,102,134
- Number of holders
- 152
Security identity
Issuer context
Latest holder snapshot
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Key facts
- MYI - BLACKROCK MUNIYIELD QUALITY FUND III, INC. - Common is tracked under CUSIP 09254E103.
- 152 institutions reported positions in Q1 2026.
- 1 significant owner is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 109 to 152 between Q4 2025 and Q1 2026.
- Reported value moved from $209,291,726 to $429,621,645.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 152 institutions filings for Q1 2026.
Security key
09254E103
Latest holder period
Q1 2026
13F holders
152
13D/G owners
1
CIK / CUSIP context first
Open Q1 2026 holders
MYI full holder history
BLACKROCK MUNIYIELD QUALITY FUND III, INC. SEC filings
BLACKROCK MUNIYIELD QUALITY FUND III, INC. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 09254E103:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
1
Security
MYI
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| RIVERNORTH CAPITAL MANAGEMENT, LLC | 5.1% | $37,196,046 | 3,366,158 | RIVERNORTH CAPITAL MANAGEMENT, LLC | 31 Mar 2026 |
As of 31 Mar 2026, 152 institutional investors reported holding 40,824,817 shares of BLACKROCK MUNIYIELD QUALITY FUND III, INC. - Common (MYI). This represents 61% of the company’s total 66,524,862 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
53%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| Karpus Management, Inc. | 8.5% | 5,676,653 | +1411% | 1.9% | $59,661,628 |
| RIVERNORTH CAPITAL MANAGEMENT, LLC | 7.9% | 5,254,333 | +200% | 2.8% | $55,223,040 |
| MORGAN STANLEY | 6.4% | 4,236,771 | +39% | 0% | $44,528,475 |
| SIT INVESTMENT ASSOCIATES INC | 4.1% | 2,700,296 | +1219% | 0.58% | $28,380,000 |
| GUGGENHEIM CAPITAL LLC | 3.4% | 2,250,388 | +57% | 0.19% | $23,651,578 |
| ROBINSON CAPITAL MANAGEMENT, LLC | 2.4% | 1,619,778 | +209% | 7.8% | $17,493,603 |
| RAYMOND JAMES FINANCIAL INC | 2.4% | 1,597,837 | +83% | 0.01% | $16,793,266 |
| BANK OF AMERICA CORP /DE/ | 1.8% | 1,173,240 | +79% | 0% | $12,330,750 |
| STIFEL FINANCIAL CORP | 1.6% | 1,081,095 | +8.4% | 0.01% | $11,362,308 |
| Advisors Asset Management, Inc. | 1.5% | 981,253 | +91% | 0.17% | $10,312,969 |
| VAN ECK ASSOCIATES CORP | 1.4% | 948,572 | +88% | 0.01% | $9,969,000 |
| Pathstone Holdings, LLC | 1.3% | 895,285 | +5602% | 0.04% | $9,409,448 |
| UBS Group AG | 1.3% | 858,796 | +35% | 0% | $9,025,946 |
| WELLS FARGO & COMPANY/MN | 0.93% | 621,378 | +57% | 0% | $6,530,680 |
| Allspring Global Investments Holdings, LLC | 0.81% | 537,780 | +298% | 0.01% | $5,652,068 |
| LPL Financial LLC | 0.81% | 537,247 | +230% | 0% | $5,646,467 |
| CITY OF LONDON INVESTMENT MANAGEMENT CO LTD | 0.79% | 527,505 | +35% | 0.4% | $5,544,078 |
| MACKAY SHIELDS LLC | 0.79% | 526,256 | 0.2% | $5,530,951 | |
| Allianz Asset Management GmbH | 0.74% | 490,934 | 0% | 0.01% | $5,159,716 |
| Rareview Capital LLC | 0.69% | 461,043 | +22% | 2.8% | $4,836,341 |
| Rockefeller Capital Management L.P. | 0.68% | 449,596 | +80% | 0.01% | $4,725,258 |
| MELFA WEALTH MANAGEMENT, INC. | 0.63% | 419,230 | +77% | 2.5% | $4,406,105 |
| Capital Investment Advisors, LLC | 0.6% | 401,136 | +79% | 0.06% | $4,215,944 |
| COHEN & STEERS, INC. | 0.59% | 392,152 | +135% | 0.01% | $4,122,000 |
| ROYAL BANK OF CANADA | 0.53% | 349,623 | +59% | 0% | $3,675,000 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
49
Latest
Q1 2026
Rows shown
1-25 of 49
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 40,824,817 | $429,621,645 | +$227,102,134 | $10.51 | 152 |
| 2025 Q4 | 19,266,355 | $209,291,726 | +$13,140,097 | $10.87 | 109 |
| 2025 Q3 | 17,968,198 | $198,913,458 | -$5,218,555 | $11.08 | 94 |
| 2025 Q2 | 18,443,477 | $193,472,671 | -$3,259,325 | $10.49 | 97 |
| 2025 Q1 | 18,767,865 | $206,464,538 | -$1,795,055 | $10.99 | 100 |
| 2024 Q4 | 19,033,521 | $210,193,582 | +$5,047,292 | $11.04 | 102 |
| 2024 Q3 | 18,489,758 | $221,599,777 | -$16,484,286 | $12.00 | 99 |
| 2024 Q2 | 19,929,043 | $222,799,392 | -$17,497,120 | $11.18 | 107 |
| 2024 Q1 | 21,496,619 | $246,285,989 | -$23,153,306 | $11.46 | 104 |
| 2023 Q4 | 23,525,286 | $273,840,112 | -$21,183,923 | $11.64 | 104 |
| 2023 Q3 | 24,387,314 | $232,904,451 | +$6,820,884 | $9.55 | 102 |
| 2023 Q2 | 23,652,421 | $258,760,380 | -$6,277,061 | $10.94 | 98 |
| 2023 Q1 | 24,222,578 | $274,556,774 | -$1,547,745 | $11.34 | 97 |
| 2022 Q4 | 24,399,682 | $273,456,492 | +$35,126,638 | $11.21 | 106 |
| 2022 Q3 | 21,204,203 | $221,173,545 | -$4,607,869 | $10.43 | 100 |
| 2022 Q2 | 21,811,492 | $254,339,173 | +$48,079,946 | $11.66 | 100 |
| 2022 Q1 | 21,660,604 | $271,780,037 | +$891,810 | $12.55 | 106 |
| 2021 Q4 | 21,487,127 | $318,436,254 | +$20,674,506 | $14.82 | 103 |
| 2021 Q3 | 20,169,184 | $296,095,529 | -$35,725,747 | $14.68 | 98 |
| 2021 Q2 | 22,567,118 | $335,242,936 | -$11,360,710 | $14.85 | 100 |
| 2021 Q1 | 23,381,986 | $333,410,910 | +$19,042,427 | $14.26 | 104 |
| 2020 Q4 | 21,642,655 | $312,671,072 | -$75,447 | $14.45 | 100 |
| 2020 Q3 | 21,646,277 | $291,155,346 | -$3,756,165 | $13.44 | 100 |
| 2020 Q2 | 28,727,951 | $374,568,495 | +$1,370,199 | $13.02 | 109 |
| 2020 Q1 | 21,910,622 | $280,004,944 | +$15,288,853 | $12.78 | 109 |