BlackRock Muniyield Quality Fund III, Inc.

MYI

Exchange: NYSE
SEC CIK: 0000883412

SEC filings (opens in a new tab)

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.

Q4 2025 vs. Q3 2025

How the institutions holding BlackRock Muniyield Quality Fund III, Inc. changed between Q3 2025 and Q4 2025.

All holders in Q4 2025 All holders in Q3 2025

13F holders of MYI: Q3 2025 compared with Q4 2025
Measure	Q3 2025	Of which not filed for Q4 2025	Q4 2025	Change
Holders	94	2	109	+17
Shares	18.0M	37.5K	19.3M	+1.34M (+7.4%)
Value	$198.9M	$415.5K	$209.3M	+$10.8M (+5.4%)

2 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (26)

Institutions that held BlackRock Muniyield Quality Fund III, Inc. at the end of Q4 2025 but not at the end of Q3 2025.

Institutions new to MYI in Q4 2025
Institution	Shares	Value	% of portfolio
Fiera Capital Corp	427,965	$4.65M	0.01%
Balyasny Asset Management LLC	140,110	$1.52M	0.00%
Estate Planners Group, LLC	99,688	$1.08M	0.47%
Logan Stone Capital, LLC	43,600	$473.9K	0.12%
Virtu Financial LLC	41,337	$449.0K	0.02%
Landscape Capital Management, L.L.C.	39,527	$429.7K	0.03%
Readystate Asset Management LP	32,790	$356.4K	0.02%
XTX Topco Ltd	28,308	$307.7K	0.01%
Wiley Bros.-Aintree Capital, LLC	22,554	$245.2K	0.00%
Summit Trail Advisors, LLC	21,253	$231.0K	0.00%
Westview Management dba Westview Investment Advisors	19,600	$213.1K	0.10%
Citadel Advisors LLC	18,204	$197.9K	0.00%
Susquehanna International Group, LLP	13,662	$148.5K	0.00%
Cerity Partners LLC	13,339	$145.0K	0.00%
Permanent Capital Management, LP	12,842	$139.6K	0.03%
Goldman Sachs Group Inc	10,463	$113.7K	0.00%
Moody National Bank Trust Division	10,420	$113.3K	0.01%
Two Sigma Securities, LLC	10,171	$110.6K	0.02%
Colony Group, LLC	10,000	$108.7K	0.00%
Elyxium Wealth, LLC	6,316	$68.7K	0.02%
Bessemer Group Inc	3,500	$38.0K	0.00%
Wolverine Asset Management LLC	2,884	$31.3K	0.00%
Trust Co of Vermont	2,300	$25.0K	0.00%
Pinnacle Wealth Planning Services, Inc.	1,085	$11.8K	0.00%
Bayban	478	$5.20K	0.00%
Hilton Head Capital Partners, LLC	441	$4.79K	0.00%

Sold out (9)

Institutions that held BlackRock Muniyield Quality Fund III, Inc. at the end of Q3 2025 and filed for Q4 2025 without it.

Institutions that sold out of MYI in Q4 2025
Institution	Shares, Q3 2025	Value, Q3 2025
Eastern Bank	131,231	$1.45M
River Street Advisors LLC	13,314	$147.5K
Toronto Dominion Bank	13,232	$146.6K
CI Private Wealth, LLC	12,966	$143.7K
Wealthspire Advisors, LLC	5,000	$55.4K
Allworth Financial LP	2,008	$22.2K
FNY Investment Advisers, LLC	1,200	$13.0K
Mather Group, LLC.	212	$2.35K
GPS Wealth Strategies Group, LLC	97	$1.07K

Not filed for Q4 2025 yet (2)

Institutions that held BlackRock Muniyield Quality Fund III, Inc. at the end of Q3 2025 and haven't filed a 13F for Q4 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding MYI in Q3 2025 that haven't filed for Q4 2025
Institution	Shares, Q3 2025	Value, Q3 2025
Bard Financial Services, Inc.	27,500	$304.7K
Sonora Investment Management Group, LLC	10,000	$110.8K