Save your place

Sign in to WhoBought

Please try again later.

BlackRock MuniYield Quality Fund III, Inc. (MYI) institutional ownership

Latest close $10.86 Jul 21, 2026
Market cap$731M 52-week range SectorFinancial Services
Funds holding · Q1 2026
153
reported MYI position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Activity unavailable N/A
123 buyers · 30 sellers

BlackRock MuniYield Quality Fund III, Inc. (MYI) price and institutional activity

Dates

Q1 2026

$0 bought by 123 investors
Karpus Management, Inc.Rivernorth Capital Management, LLC +121 more
$0 sold by 30 investors
Hennion & Walsh Asset Management, Inc.Fiera Capital Corp +28 more
Bought Sold Totals per quarter; hover a bar for the names.

BlackRock MuniYield Quality Fund III, Inc. (MYI) institutional activity · 153

Investor Type Est. change Change Δ Own Date
Karpus Management, Inc. · Added
Change +5.3M Date Q1 2026
Karpus Management, Inc. Added· Q1 2026 +5.3M Q1 2026
Rivernorth Capital Management, LLC · Added
Change +3.5M Date Q1 2026
Rivernorth Capital Management, LLC Added· Q1 2026 +3.5M Q1 2026
Sit Investment Associates Inc · Added
Change +2.5M Date Q1 2026
Sit Investment Associates Inc Added· Q1 2026 +2.5M Q1 2026
Hennion & Walsh Asset Management, Inc. · Exited
Change −1.6M Δ Own −100.0% Date Q1 2026
Hennion & Walsh Asset Management, Inc. Exited· Q1 2026 −1.6M −100.0% Q1 2026
Morgan Stanley · Added
Change +1.2M Date Q1 2026
Morgan Stanley Added· Q1 2026 +1.2M Q1 2026
Robinson Capital Management, LLC · Added
Change +1.1M Date Q1 2026
Robinson Capital Management, LLC Added· Q1 2026 +1.1M Q1 2026
Pathstone Holdings, LLC · Added
Change +880K Date Q1 2026
Pathstone Holdings, LLC Added· Q1 2026 +880K Q1 2026
Guggenheim Capital LLC · Added
Change +815K Date Q1 2026
Guggenheim Capital LLC Added· Q1 2026 +815K Q1 2026
Raymond James Financial Inc · Added
Change +723K Date Q1 2026
Raymond James Financial Inc Added· Q1 2026 +723K Q1 2026
Mackay Shields LLC · New
Change +526K Date Q1 2026
Mackay Shields LLC New· Q1 2026 +526K Q1 2026
Bank of America Corp · Added
Change +516K Date Q1 2026
Bank of America Corp Added· Q1 2026 +516K Q1 2026
Advisors Asset Management, Inc. · Added
Change +468K Date Q1 2026
Advisors Asset Management, Inc. Added· Q1 2026 +468K Q1 2026
Van Eck Associates Corp · Added
Change +445K Date Q1 2026
Van Eck Associates Corp Added· Q1 2026 +445K Q1 2026
Allspring Global Investments Holdings, LLC · Added
Change +403K Date Q1 2026
Allspring Global Investments Holdings, LLC Added· Q1 2026 +403K Q1 2026
Lpl Financial LLC · Added
Change +374K Date Q1 2026
Lpl Financial LLC Added· Q1 2026 +374K Q1 2026
Data through Q1 2026 · filed Jun 3, 2026
15 of 153

Famous investor activity in BlackRock MuniYield Quality Fund III, Inc. (MYI)

BlackRock MuniYield Quality Fund III, Inc. (MYI) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Toronto Dominion Investments, Inc. · 10% Owner Other Form 4 events 2K
Owned 6K Trade date Feb 23, 2026 Filed date Mar 6, 2026
Toronto Dominion Investments, Inc. 10% Owner Other Form 4 events 2K 6K Feb 23, 2026 Mar 6, 2026
Soccio Phillip · Other Other Form 4 events $1K
Price $11.24 Qty 109 Owned 109 Trade date Feb 23, 2026 Filed date Feb 25, 2026
Soccio Phillip Other Other Form 4 events $11.24 109 $1K 109 Feb 23, 2026 Feb 25, 2026
Harris Stayce D. · Director Other Form 4 events 10
Owned 21 Trade date Feb 23, 2026 Filed date Feb 25, 2026
Harris Stayce D. Director Other Form 4 events 10 21 Feb 23, 2026 Feb 25, 2026
Kalinoski Michael · Director 2 operations 3K
Owned 3K Trade date Feb 23, 2026 Filed date Feb 25, 2026
Kalinoski Michael Director 2 operations 3K 3K Feb 23, 2026 Feb 25, 2026
Oconnor Walter · Other 3 operations 0
Owned 0 Trade date Jan 30, 2026 Filed date Feb 3, 2026
Oconnor Walter Other 3 operations 0 0 Jan 30, 2026 Feb 3, 2026
Oconnor Walter · Other Shares transferred outside the market (D), often for tax or as a gift, not a market sale -$4K
Price $11.16 Qty -354 Owned 100 Trade date Jan 30, 2026 Filed date Feb 3, 2026
Oconnor Walter Other Shares transferred outside the market (D), often for tax or as a gift, not a market sale $11.16 -354 -$4K 100 Jan 30, 2026 Feb 3, 2026
Kalinoski Michael · Other 3 operations 0
Owned 0 Trade date Jan 30, 2026 Filed date Feb 3, 2026
Kalinoski Michael Other 3 operations 0 0 Jan 30, 2026 Feb 3, 2026
Kalinoski Michael · Other Shares transferred outside the market (D), often for tax or as a gift, not a market sale -$1K
Price $11.16 Qty -115 Owned 29 Trade date Jan 30, 2026 Filed date Feb 3, 2026
Kalinoski Michael Other Shares transferred outside the market (D), often for tax or as a gift, not a market sale $11.16 -115 -$1K 29 Jan 30, 2026 Feb 3, 2026
Kalinoski Michael · Other Grant (A) $2K
Price $11.16 Qty 187 Owned 187 Trade date Jan 30, 2026 Filed date Feb 3, 2026
Kalinoski Michael Other Grant (A) $11.16 187 $2K 187 Jan 30, 2026 Feb 3, 2026
Romaglino Christian · Other 3 operations 0
Owned 0 Trade date Jan 30, 2026 Filed date Feb 3, 2026
Romaglino Christian Other 3 operations 0 0 Jan 30, 2026 Feb 3, 2026
Romaglino Christian · Other Shares transferred outside the market (D), often for tax or as a gift, not a market sale -$2K
Price $11.16 Qty -170 Owned 0 Trade date Jan 30, 2026 Filed date Feb 3, 2026
Romaglino Christian Other Shares transferred outside the market (D), often for tax or as a gift, not a market sale $11.16 -170 -$2K 0 Jan 30, 2026 Feb 3, 2026
Romaglino Christian · Other Grant (A) $2K
Price $11.16 Qty 180 Owned 180 Trade date Jan 30, 2026 Filed date Feb 3, 2026
Romaglino Christian Other Grant (A) $11.16 180 $2K 180 Jan 30, 2026 Feb 3, 2026
12 of 12

BlackRock MuniYield Quality Fund III, Inc. (MYI) activist and large shareholders

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
Toronto Dominion Investments, Inc. 4K
% of shares outstanding 100.0% Filing date Jul 5, 2022
Toronto Dominion Investments, Inc. 4K 100.0% Jul 5, 2022
Rivernorth Capital Management, LLC 3.4M
% of shares outstanding 5.1% Filing date May 15, 2026
Rivernorth Capital Management, LLC 3.4M 5.1% May 15, 2026
Karpus Management, Inc. 3.2M
% of shares outstanding 4.7% Filing date Jul 9, 2021
Karpus Management, Inc. 3.2M 4.7% Jul 9, 2021
Morgan Stanley 1.1M
% of shares outstanding 1.6% Filing date Dec 11, 2023
Morgan Stanley 1.1M 1.6% Dec 11, 2023
4 of 4

BlackRock MuniYield Quality Fund III, Inc. (MYI) ownership FAQ

Who owns MYI?

153 reporting institutions disclosed MYI position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.