BlackRock Muniyield Quality Fund III, Inc.
MYI- Exchange
- NYSE
- SEC CIK
- 0000883412
No open-market purchases or sales by BlackRock Muniyield Quality Fund III, Inc. insiders were filed in the last 90 days; 156 institutions reported holding it in 13F filings for Q2 2026, worth $431.8M in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in BlackRock Muniyield Quality Fund III, Inc. as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 152
- +45 vs. Q4 2025
- Shares held
- 40.8M
- +21.6M (+112.0%) vs. Q4 2025
- Total value
- $429.7M
- +$220.5M (+105.4%) vs. Q4 2025
- New holders
- 67
- 57 more added
- Sold out
- 22
- 8 more reduced
2 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting MYI on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 156 | $431.8M |
| Q1 2026 | 152 | $429.7M |
| Q4 2025 | 109 | $209.3M |
| Q3 2025 | 94 | $198.9M |
| Q2 2025 | 97 | $193.5M |
| Q1 2025 | 100 | $206.5M |
| Q4 2024 | 102 | $210.2M |
| Q3 2024 | 100 | $221.6M |
| Q2 2024 | 108 | $223.1M |
| Q1 2024 | 104 | $246.3M |
| Q4 2023 | 105 | $273.8M |
| Q3 2023 | 102 | $232.9M |
| Q2 2023 | 98 | $258.8M |
| Q1 2023 | 98 | $274.8M |
| Q4 2022 | 107 | $273.4M |
| Q3 2022 | 101 | $221.3M |
| Q2 2022 | 101 | $254.5M |
| Q1 2022 | 106 | $267.0M |
| Q4 2021 | 104 | $318.4M |
| Q3 2021 | 100 | $296.1M |
| Q2 2021 | 104 | $335.3M |
| Q1 2021 | 105 | $333.4M |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding BlackRock Muniyield Quality Fund III, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Karpus Management, Inc. | 5,676,653 | $59.7M | 1.86% | +5,300,945+1,410.9% | Added |
| Rivernorth Capital Management, LLC | 5,254,333 | $55.2M | 2.79% | +3,502,884+200.0% | Added |
| Morgan Stanley | 4,236,771 | $44.5M | 0.00% | +1,197,554+39.4% | Added |
| Sit Investment Associates Inc | 2,700,296 | $28.4M | 0.58% | +2,495,608+1,219.2% | Added |
| Guggenheim Capital LLC | 2,250,388 | $23.7M | 0.19% | +814,952+56.8% | Added |
| Robinson Capital Management, LLC | 1,619,778 | $17.5M | 7.83% | +1,095,393+208.9% | Added |
| Raymond James Financial Inc | 1,597,837 | $16.8M | 0.01% | +723,362+82.7% | Added |
| Bank of America Corp | 1,173,240 | $12.3M | 0.00% | +516,460+78.6% | Added |
| Stifel Financial Corp | 1,081,095 | $11.4M | 0.01% | +83,566+8.4% | Added |
| Advisors Asset Management, Inc. | 981,253 | $10.3M | 0.17% | +468,327+91.3% | Added |
| Van Eck Associates Corp | 948,572 | $9.97M | 0.01% | +444,526+88.2% | Added |
| Pathstone Holdings, LLC | 895,285 | $9.41M | 0.04% | +879,585+5,602.5% | Added |
| UBS Group AG | 858,796 | $9.03M | 0.00% | +221,143+34.7% | Added |
| Wells Fargo & Company | 621,378 | $6.53M | 0.00% | +226,205+57.2% | Added |
| Allspring Global Investments Holdings, LLC | 537,780 | $5.65M | 0.01% | +402,688+298.1% | Added |
| LPL Financial LLC | 537,247 | $5.65M | 0.00% | +374,229+229.6% | Added |
| City of London Investment Management Co Ltd | 527,505 | $5.54M | 0.40% | +136,462+34.9% | Added |
| Mackay Shields LLC | 526,256 | $5.53M | 0.20% | +526,256 | New |
| Allianz Asset Management GmbH | 490,934 | $5.16M | 0.01% | 00.0% | Unchanged |
| Rareview Capital LLC | 461,043 | $4.84M | 2.84% | +83,565+22.1% | Added |
| Rockefeller Capital Management L.P. | 449,596 | $4.73M | 0.01% | +200,303+80.3% | Added |
| Melfa Wealth Management, LLC | 419,230 | $4.41M | 2.53% | +182,880+77.4% | Added |
| Capital Investment Advisors, LLC | 401,136 | $4.22M | 0.06% | +176,878+78.9% | Added |
| Cohen & Steers, Inc. | 392,152 | $4.12M | 0.01% | +225,395+135.2% | Added |
| Royal Bank of Canada | 349,623 | $3.67M | 0.00% | +129,414+58.8% | Added |
| Invesco Ltd. | 340,602 | $3.58M | 0.00% | +164,266+93.2% | Added |
| Leo Wealth, LLC | 274,876 | $2.89M | 0.21% | +274,876 | New |
| Commonwealth Equity Services, LLC | 271,256 | $2.85M | 0.00% | +79,272+41.3% | Added |
| Fiera Capital Corp | 237,347 | $2.49M | 0.01% | −190,618−44.5% | Reduced |
| 1607 Capital Partners, LLC | 209,508 | $2.20M | 0.16% | +209,508 | New |
| Horizon Kinetics Asset Management LLC | 207,994 | $2.19M | 0.02% | +105,895+103.7% | Added |
| Kim, LLC | 204,185 | $2.15M | 0.32% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 192,252 | $2.02M | 0.00% | +107,926+128.0% | Added |
| Coastal Bridge Advisors, LLC | 174,428 | $1.83M | 0.13% | +460+0.3% | Added |
| Scarborough Advisors, LLC | 169,362 | $1.78M | 0.19% | +106,362+168.8% | Added |
| Ameriprise Financial Inc | 163,854 | $1.72M | 0.00% | +138,368+542.9% | Added |
| Professional Financial Management, Inc. | 148,721 | $1.56M | 1.63% | +148,721 | New |
| Dakota Wealth Management | 144,652 | $1.52M | 0.03% | +144,652 | New |
| Balyasny Asset Management LLC | 134,810 | $1.42M | 0.00% | −5,300−3.8% | Reduced |
| Concurrent Investment Advisors, LLC | 130,177 | $1.37M | 0.01% | +92,711+247.5% | Added |
| Toronto Dominion Bank | 124,532 | $1.31M | 0.00% | +124,532 | New |
| Westchester Capital Management, LLC | 112,436 | $1.18M | 0.06% | +61,247+119.6% | Added |
| HighTower Advisors, LLC | 111,324 | $1.17M | 0.00% | +44,578+66.8% | Added |
| Summit Trail Advisors, LLC | 104,480 | $1.10M | 0.02% | +83,227+391.6% | Added |
| Estate Planners Group, LLC | 99,352 | $1.04M | 0.50% | −336−0.3% | Reduced |
| Bank of New York Mellon Corp | 97,146 | $1.02M | 0.00% | +97,146 | New |
| Indiana Trust & Investment Management CO | 91,249 | $959.0K | 0.30% | +91,249 | New |
| Riverbridge Partners LLC | 73,672 | $774.3K | 0.02% | +73,672 | New |
| Chicago Partners Investment Group LLC | 68,016 | $746.1K | 0.02% | +68,016 | New |
| Moors & Cabot, Inc. | 67,932 | $714.0K | 0.03% | +35,042+106.5% | Added |
| Lido Advisors, LLC | 66,879 | $706.6K | 0.00% | +66,879 | New |
| Advisory Services Network, LLC | 67,039 | $704.6K | 0.01% | +8,241+14.0% | Added |
| Ackerman Capital Advisors, LLC | 61,212 | $643.3K | 0.13% | +45,638+293.0% | Added |
| Atala Financial Inc | 54,739 | $609.8K | 0.41% | +54,739 | New |
| Wellspring Financial Advisors, LLC | 56,563 | $594.5K | 0.04% | +56,563 | New |
| Callahan Advisors, LLC | 55,692 | $585.3K | 0.05% | +55,692 | New |
| Noble Wealth Management PBC | 53,672 | $564.1K | 0.29% | +53,672 | New |
| Jane Street Group, LLC | 53,544 | $562.7K | 0.00% | −45,314−45.8% | Reduced |
| Oppenheimer & Co Inc | 51,604 | $542.4K | 0.01% | +51,604 | New |
| Hollencrest Capital Management | 46,276 | $486.4K | 0.02% | +23,380+102.1% | Added |
| Kestra Advisory Services, LLC | 44,477 | $469.4K | 0.00% | +28,602+180.2% | Added |
| Cambridge Investment Research Advisors, Inc. | 43,557 | $458.0K | 0.00% | +43,557 | New |
| Advisor Group Holdings, Inc. | 43,409 | $456.2K | 0.00% | +20,317+88.0% | Added |
| Wiley Bros.-Aintree Capital, LLC | 41,632 | $437.6K | 0.00% | +19,078+84.6% | Added |
| Cetera Investment Advisers | 39,140 | $411.4K | 0.00% | +16,932+76.2% | Added |
| Kapstone Financial Advisors LLC | 38,625 | $405.9K | 0.20% | +38,625 | New |
| Integrated Wealth Concepts LLC | 37,434 | $393.4K | 0.00% | +37,434 | New |
| Stratos Wealth Partners, LTD. | 36,806 | $386.8K | 0.00% | +36,806 | New |
| Nuveen, LLC | 36,296 | $381.5K | 0.00% | +36,296 | New |
| Virtue Asset Management LLC | 35,606 | $374.2K | 0.30% | +35,606 | New |
| U.S. Capital Wealth Advisors, LLC | 31,609 | $332.2K | 0.01% | +31,609 | New |
| Closed-End Fund Advisors, Inc. | 30,881 | $324.6K | 0.33% | +30,881 | New |
| Mercer Global Advisors Inc | 29,247 | $307.4K | 0.00% | +8,261+39.4% | Added |
| Benjamin Edwards Inc | 29,161 | $306.5K | 0.00% | +29,161 | New |
| Yakira Capital Management, Inc. | 28,662 | $301.2K | 0.09% | +28,662 | New |
| Eastern Bank | 28,320 | $297.6K | 0.01% | +28,320 | New |
| Steward Partners Investment Advisory, LLC | 27,209 | $286.0K | 0.00% | +12,042+79.4% | Added |
| Verdence Capital Advisors LLC | 26,965 | $283.4K | 0.02% | +26,965 | New |
| River Street Advisors LLC | 26,766 | $281.3K | 0.10% | +26,766 | New |
| SFMG, LLC | 26,645 | $280.0K | 0.02% | +13,119+97.0% | Added |
| US Bancorp | 26,622 | $279.8K | 0.00% | +4,084+18.1% | Added |
| Northern Trust Corp | 26,494 | $278.5K | 0.00% | +26,494 | New |
| Davis Investment Partners, LLC | 25,839 | $271.6K | 0.10% | +25,839 | New |
| Daner Wealth Management, LLC | 20,417 | $223.6K | 0.13% | 00.0% | Unchanged |
| Camelot Portfolios, LLC | 21,110 | $221.9K | 0.17% | +1,379+7.0% | Added |
| Westview Management dba Westview Investment Advisors | 19,900 | $209.1K | 0.11% | +300+1.5% | Added |
| Ashton Thomas Private Wealth, LLC | 19,500 | $204.9K | 0.00% | −18,779−49.1% | Reduced |
| Private Advisor Group, LLC | 19,100 | $200.7K | 0.00% | 00.0% | Unchanged |
| Central Trust Co | 19,000 | $199.7K | 0.00% | +19,000 | New |
| Truist Financial Corp | 18,980 | $199.5K | 0.00% | +18,980 | New |
| Fortitude Advisory Group L.L.C. | 18,010 | $189.3K | 0.09% | +18,010 | New |
| M&T Bank Corp | 16,994 | $178.3K | 0.00% | +16,994 | New |
| Equitable Holdings, Inc. | 16,199 | $176.0K | 0.00% | +300+1.9% | Added |
| Mariner, LLC | 16,453 | $172.9K | 0.00% | +64+0.4% | Added |
| RSM US Wealth Management LLC | 16,011 | $168.9K | 0.00% | +16,011 | New |
| Nomura Holdings Inc | 16,000 | $168.2K | 0.00% | +16,000 | New |
| First Trust Advisors LP | 15,751 | $165.5K | 0.00% | 00.0% | Unchanged |
| Savvy Advisors, Inc. | 15,417 | $162.0K | 0.00% | +15,417 | New |
| Disciplined Investors, L.L.C. | 14,500 | $152.4K | 0.09% | 00.0% | Unchanged |
| Virtu Financial LLC | 14,498 | $152.0K | 0.01% | −26,839−64.9% | Reduced |