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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, Q2 2026

Institutional positions in BlackRock Muniyield Quality Fund III, Inc. as of Jun 30, 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
156
+7 vs. Q1 2026
Shares held
38.9M
−1.63M (−4.0%) vs. Q1 2026
Total value
$431.8M
+$5.43M (+1.3%) vs. Q1 2026
New holders
18
48 more added
Sold out
11
40 more reduced

3 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 2026: 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.

Institutional holdersQ2 2026: 156 institutions
Q1 2021: 105 institutionsQ2 2021: 104 institutionsQ3 2021: 100 institutionsQ4 2021: 104 institutionsQ1 2022: 106 institutionsQ2 2022: 101 institutionsQ3 2022: 101 institutionsQ4 2022: 107 institutionsQ1 2023: 98 institutionsQ2 2023: 98 institutionsQ3 2023: 102 institutionsQ4 2023: 105 institutionsQ1 2024: 104 institutionsQ2 2024: 108 institutionsQ3 2024: 100 institutionsQ4 2024: 102 institutionsQ1 2025: 100 institutionsQ2 2025: 97 institutionsQ3 2025: 94 institutionsQ4 2025: 109 institutionsQ1 2026: 152 institutionsQ2 2026: 156 institutions
Value heldQ2 2026: $431.8M
Q1 2021: $333.4MQ2 2021: $335.3MQ3 2021: $296.1MQ4 2021: $318.4MQ1 2022: $267.0MQ2 2022: $254.5MQ3 2022: $221.3MQ4 2022: $273.4MQ1 2023: $274.8MQ2 2023: $258.8MQ3 2023: $232.9MQ4 2023: $273.8MQ1 2024: $246.3MQ2 2024: $223.1MQ3 2024: $221.6MQ4 2024: $210.2MQ1 2025: $206.5MQ2 2025: $193.5MQ3 2025: $198.9MQ4 2025: $209.3MQ1 2026: $429.7MQ2 2026: $431.8M
Institutions holding MYI and their total value by quarter
QuarterHoldersValue
Q2 2026156$431.8M
Q1 2026152$429.7M
Q4 2025109$209.3M
Q3 202594$198.9M
Q2 202597$193.5M
Q1 2025100$206.5M
Q4 2024102$210.2M
Q3 2024100$221.6M
Q2 2024108$223.1M
Q1 2024104$246.3M
Q4 2023105$273.8M
Q3 2023102$232.9M
Q2 202398$258.8M
Q1 202398$274.8M
Q4 2022107$273.4M
Q3 2022101$221.3M
Q2 2022101$254.5M
Q1 2022106$267.0M
Q4 2021104$318.4M
Q3 2021100$296.1M
Q2 2021104$335.3M
Q1 2021105$333.4M

Institutions, Q2 2026

Shares, value and share of portfolio for each institution holding BlackRock Muniyield Quality Fund III, Inc.; share changes are against Q1 2026.

Institutions holding MYI in Q2 2026
InstitutionSharesValue% of portfolioChange in sharesAction
Disciplined Investors, L.L.C.14,500$161.1K0.08%00.0%Unchanged
CI Private Wealth, LLC14,166$157.4K0.00%+14,166New
Merit Financial Group, LLC14,099$156.6K0.00%+2,160+18.1%Added
CX Institutional14,000$156.0K0.00%00.0%Unchanged
Aviance Capital Partners, LLC13,863$154.0K0.02%−484−3.4%Reduced
Coastal Investment Advisors, Inc.13,275$147.5K0.05%00.0%Unchanged
First Trust Advisors LP13,032$144.8K0.00%−2,719−17.3%Reduced
Goldman Sachs Group Inc12,529$139.2K0.00%−420−3.2%Reduced
Creative Planning12,362$137.3K0.00%+1,369+12.5%Added
Traub Capital Management LLC12,327$137.0K0.12%+12,327New
Boothbay Fund Management, LLC12,021$133.6K0.00%+12,021New
Herold Advisors, Inc.11,535$129.0K0.03%+11,535New
Virtu Financial LLC11,225$125.0K0.00%−3,273−22.6%Reduced
Alesco Advisors LLC10,900$121.1K0.00%−900−7.6%Reduced
Chapin Davis, Inc.10,500$116.7K0.02%00.0%Unchanged
NWF Advisory Services Inc.10,115$112.4K0.01%00.0%Unchanged
Commerce Bank10,000$111.1K0.00%00.0%Unchanged
Chung Wu Investment Group, LLC10,000$111.1K0.07%00.0%Unchanged
Citizens National Bank Trust Department9,830$109.2K0.02%00.0%Unchanged
Future Financial Wealth Managment LLC10,000$107.5K0.07%00.0%Unchanged
Global Retirement Partners, LLC9,499$105.5K0.00%+9,499New
Fifth Third Bancorp8,244$91.6K0.00%+44+0.5%Added
Gould Capital, LLC6,350$70.5K0.04%00.0%Unchanged
Bokf, NA6,204$68.9K0.00%00.0%Unchanged
Farther Finance Advisors, LLC5,762$64.0K0.00%+5,015+671.4%Added
Blue Bell Private Wealth Management, LLC5,224$58.0K0.01%00.0%Unchanged
Harbour Investments, Inc.5,200$57.8K0.00%00.0%Unchanged
GWM Advisors LLC5,132$57.0K0.00%00.0%Unchanged
Private Trust Co NA5,000$55.5K0.00%+3,037+154.7%Added
EverSource Wealth Advisors, LLC4,173$46.4K0.00%00.0%Unchanged
Geneos Wealth Management Inc.4,042$44.9K0.00%00.0%Unchanged
Anchor Investment Management, LLC4,001$44.5K0.00%00.0%Unchanged
Pinnacle Wealth Planning Services, Inc.3,755$41.7K0.00%+1,392+58.9%Added
Bessemer Group Inc3,535$39.0K0.00%+35+1.0%Added
Institute for Wealth Management, LLC.3,460$38.4K0.00%+3,460New
Northwestern Mutual Wealth Management Co3,187$35.4K0.00%+435+15.8%Added
Larson Financial Group LLC3,160$35.1K0.00%00.0%Unchanged
Penserra Capital Management LLC2,976$33.0K0.00%+1,984+200.0%Added
CoreCap Advisors, LLC2,260$25.1K0.00%+2,260New
ORG Wealth Partners, LLC2,003$22.3K0.00%00.0%Unchanged
Bartlett & Co. Wealth Management LLC1,931$21.6K0.00%00.0%Unchanged
PlanVest Financial, Inc1,896$21.1K0.01%00.0%Unchanged
Capital Analysts, LLC1,748$19.0K0.00%+27+1.6%Added
Quent Capital, LLC1,613$17.9K0.00%+1,613New
AdvisorNet Financial, Inc1,537$17.1K0.00%00.0%Unchanged
Mascoma Wealth Management LLC1,218$13.5K0.00%00.0%Unchanged
WPG Advisers, LLC1,041$11.6K0.01%+386+58.9%Added
Brown, Lisle/Cummings, Inc.655$7.28K0.00%00.0%Unchanged
Delta Asset Management LLC646$7.18K0.00%+350+118.2%Added
Highline Wealth Partners LLC500$5.55K0.00%00.0%Unchanged
LifeSteps Financial, Inc.500$5.55K0.00%+500New
Bayban478$5.31K0.00%00.0%Unchanged
Smartleaf Asset Management LLC244$2.72K0.00%00.0%Unchanged
Mather Group, LLC.212$2.35K0.00%00.0%Unchanged
Entrust Financial LLC148$1.65K0.00%+148New
St Germain D J Co Inc79$8780.00%00.0%Unchanged
Advisors Asset Management, Inc.0$00.00%−981,253−100.0%Sold out
Stratos Wealth Partners, LTD.0$00.00%−36,806−100.0%Sold out
Private Advisor Group, LLC0$00.00%−19,100−100.0%Sold out
Central Trust Co0$00.00%−19,000−100.0%Sold out
Nomura Holdings Inc0$00.00%−16,000−100.0%Sold out
Ameritas Advisory Services, LLC0$00.00%−3,160−100.0%Sold out
Allworth Financial LP0$00.00%−2,008−100.0%Sold out
GHP Investment Advisors, Inc.0$00.00%−1,178−100.0%Sold out
BlackRock, Inc.0$00.00%−715−100.0%Sold out
Abound Wealth Management0$00.00%−572−100.0%Sold out
Hilton Head Capital Partners, LLC0$00.00%−441−100.0%Sold out
Leo Wealth, LLC––––Not filed
U.S. Capital Wealth Advisors, LLC––––Not filed
CWM, LLC––––Not filed