BlackRock MuniYield Quality Fund III, Inc.
US ˙ NYSE ˙ US09254E1038

SecurityMYI / BlackRock MuniYield Quality Fund III, Inc.
InstitutionPrivate Advisor Group, LLC
Latest Disclosed Ownership19,100 shares
Latest Disclosed Value $ 200,741
Private Advisor Group, LLC ownership in MYI / BlackRock MuniYield Quality Fund III, Inc.

On April 24, 2026 - Private Advisor Group, LLC filed a 13F-HR form disclosing ownership of 19,100 shares of BlackRock MuniYield Quality Fund III, Inc. (US:MYI) valued at $200,741 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 19,100 shares of BlackRock MuniYield Quality Fund III, Inc.. This represents a change in shares of 0.00% during the quarter. The current value of the position is $206,853 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-24 2026-03-31 13F BLACKROCK MUNIYIELD QUALITY COM 09254E103 19,100 0 0.00 201 -3.38 0.0009
2026-02-17 2025-12-31 13F BLACKROCK MUNIYIELD QUALITY COM 09254E103 19,100 -57 -0.30 208 -2.36 0.0009
2025-11-13 2025-09-30 13F BLACKROCK MUNIYIELD QUALITY COM 09254E103 19,157 4,057 26.87 212 34.18 0.0010
2025-08-11 2025-06-30 13F BLACKROCK MUNIYIELD QUALITY COM 09254E103 15,100 -6,700 -30.73 158 -33.89 0.0009
2025-05-05 2025-03-31 13F BLACKROCK MUNIYIELD QUALITY COM 09254E103 21,800 0 0.00 240 -0.42 0.0014
2025-02-03 2024-12-31 13F BLACKROCK MUNIYIELD QUALITY COM 09254E103 21,800 0 0.00 241 -8.05 0.0014
2024-10-22 2024-09-30 13F BLACKROCK MUNIYIELD QUALITY COM 09254E103 21,800 0 0.00 262 7.41 0.0016
2024-08-05 2024-06-30 13F BLACKROCK MUNIYIELD QUALITY COM 09254E103 21,800 0 0.00 244 -2.41 0.0016
2024-04-30 2024-03-31 13F BLACKROCK MUNIYIELD QUALITY COM 09254E103 21,800 0 0.00 250 -1.58 0.0018
2024-02-06 2023-12-31 13F BLACKROCK MUNIYIELD QUALITY COM 09254E103 21,800 -8,885 -28.96 254 -13.65 0.0020
2023-11-03 2023-09-30 13F BLACKROCK MUNIYIELD QUALITY COM 09254E103 30,685 81 0.26 293 -12.28 0.0026
2023-08-10 2023-06-30 13F BLACKROCK MUNIYIELD QUALITY COM 09254E103 30,604 4,078 15.37 335 11.33 0.0029
2023-05-10 2023-03-31 13F BLACKROCK MUNIYIELD QUALITY COM 09254E103 26,526 -4,574 -14.71 301 0.0029
2023-01-18 2022-12-31 13F BLACKROCK MUNIYIELD QUALITY COM 09254E103 31,100 -16,422 -34.56 0 -100.00 0.0000
2022-10-14 2022-09-30 13F BLACKROCK MUNIYIELD QUALITY COM 09254E103 47,522 24,484 106.28 496 84.39 0.0057
2022-07-13 2022-06-30 13F BLACKROCK MUNIYIELD QUALITY COM 09254E103 23,038 4,312 23.03 269 14.47 0.0024
2022-05-12 2022-03-31 13F/A-1 BLACKROCK MUNIYIELD QUALITY COM 09254E103 18,726 8,576 84.49 235 56.67 0.0018
2022-05-10 2022-03-31 13F BLACKROCK MUNIYIELD QUALITY COM 09254E103 10,150 0 150 0.0011
2022-02-10 2021-12-31 13F BLACKROCK MUNIYIELD QUALITY COM 09254E103 10,150 10,150 150 0.0011
2020-10-30 2020-09-30 13F BLACKROCK MUNIYIELD QUALITY COM 09254E103 0 -18,291 -100.00 0 -100.00
2020-08-17 2020-06-30 13F BLACKROCK MUNIYIELD QUALITY COM 09254E103 18,291 -1,302 -6.65 238 -4.80 0.0033
2020-05-12 2020-03-31 13F BLACKROCK MUNIYIELD QLTY FD COM 09254E103 19,593 1,274 6.95 250 1.21 0.0046
2020-02-10 2019-12-31 13F BLACKROCK MUNIYIELD QLTY FD COM 09254E103 18,319 18,319 247 0.0038
2016-08-09 2016-06-30 13F BLACKROCK MUNIYIELD QLTY FD COM 09254E103 0 -23,631 -100.00 0 -100.00
2016-05-13 2016-03-31 13F BLACKROCK MUNIYIELD QLTY FD COM 09254E103 23,631 -4,316 -15.44 356 -13.59 0.0172
2016-02-09 2015-12-31 13F BLACKROCK MUNIYIELD QLTY FD COM 09254E103 27,947 0 0.00 412 5.64 0.0198
2015-11-13 2015-09-30 13F BLACKROCK MUNIYIELD QLTY FD COM 09254E103 27,947 1,000 3.71 390 5.12 0.0214
2015-08-13 2015-06-30 13F BLACKROCK MUNIYIELD QLTY FD COM 09254E103 26,947 438 1.65 371 -1.33 0.0176
2015-05-13 2015-03-31 13F BLACKROCK MUNIYIELD QLTY FD COM 09254E103 26,509 26,509 376 0.0217
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.