MMU

Western Asset Managed MuniciETF$9.40 1.36%
UnclassifiedCUSIP 95766M105· EOD Sep 15, 2026

Among active 13F managers last quarter, 4 opened and 22 added, while 15 reduced; the largest holder to move was Rivernorth Capital Management, LLC (−9.3%).

Tracked 13F holders
102
66 in Q2 2026 filings
13F value (tracked)
$195.3M
13F moves · latest Q
26 added
15 reduced

Price & smart-money activity

$9.40 1.36%5Y -32.5%
$8.22$9.75$11.28$12.81$14.34202120222023202420252026658567112941563114691081691110101391332015241019222122331723262215
Hover for who · click for detailEnd-of-day closing prices52w $9.40 – $10.69

Who owns MMU?

102 tracked 13F filers · ranked by shares held

102 tracked 13F filers disclose a position in MMU as of the latest SEC 13F filings, a combined $195.3M in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

#FundSharesPosition valueLast moveAs ofHistory
1Morgan Stanley4.4M
$45.2M
+7.5%
Added · +305K sh
Q1 2026
2Rivernorth Capital Management, LLC1.8M
$18.3M
−9.3%
Reduced · −181K sh
Q2 2026
3Bank Of America Corp1.7M
$17.3M
+8.9%
Added · +137K sh
Q1 2026
4Raymond James Financial Inc1.2M
$11.9M
+9.2%
Added · +98K sh
Q1 2026
5Guggenheim Capital LLC1.0M
$10.7M
+23%
Added · +197K sh
Q1 2026
61607 Capital Partners, LLC852K
$8.9M
−36%
Reduced · −479K sh
Q2 2026
7Advisors Asset Management, Inc.810K
$8.4M
+18%
Added · +123K sh
Q2 2026
8Robinson Capital Management, LLC717K
$7.5M
+7.2%
Added · +48K sh
Q2 2026
9Hennion & Walsh Asset Management, Inc.614K
$6.4M
+24%
Added · +117K sh
Q2 2026
10Allianz Asset Management GmbH545K
$5.6M
Held
Q1 2026
11Wells Fargo & Company491K
$5.0M
+7.9%
Added · +36K sh
Q1 2026
12Van Eck Associates Corp460K
$4.8M
+1.0%
Added · +5K sh
Q2 2026
13City Of London Investment Management Co Ltd333K
$3.5M
Held
Q2 2026
14Westview Management dba Westview Investment Advisors295K
$3.1M
−0.6%
Reduced · −2K sh
Q2 2026
15Rareview Capital LLC273K
$2.7M
−21%
Reduced · −71K sh
Q2 2026
16Envestnet Asset Management Inc223K
$2.3M
+0.6%
Added · +1K sh
Q1 2026
17HighTower Advisors, LLC185K
$1.9M
Held
Q1 2026
18Royal Bank Of Canada167K
$1.7M
+5.2%
Added · +8K sh
Q1 2026
19Fiera Capital Corp151K
$1.6M
−3.6%
Reduced · −6K sh
Q2 2026
20Rockefeller Capital Management L.P.146K
$1.5M
+0.9%
Added · +1K sh
Q1 2026
21Steward Partners Investment Advisory, LLC141K
$1.5M
+11%
Added · +14K sh
Q2 2026
22UBS Group AG141K
$1.5M
−2.7%
Reduced · −4K sh
Q1 2026
23LPL Financial LLC125K
$1.3M
+2.6%
Added · +3K sh
Q1 2026
24Osaic Holdings, Inc.115K
$1.2M
+1.2%
Added · +1K sh
Q1 2026
25Melfa Wealth Management, Inc.104K
$1.1M
−4.7%
Reduced · −5K sh
Q2 2026

Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

Is MMU being bought or sold by institutions?

Last quarter, 4 funds opened a new position in MMU and 22 added to an existing one, while 15 reduced. Based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).

Opened
4
funds took a first position
Added
22
added to an existing position
Reduced
15
reduced, still holding
Biggest moves · ranked by size of the change, positions above a floor

Funds that own MMU also own

CompanyCo-held byTheir position there
Microsoft CorpMSFT51 funds$23.2B
Alphabet Inc-CL AGOOGL48 funds$14.7B
Apple IncAAPL47 funds$28.3B
Nvidia CorpNVDA46 funds$47.5B
Broadcom IncAVGO46 funds$19.6B
Amazon.com IncAMZN46 funds$16.6B
JPMorgan Chase & CoJPM46 funds$6.5B
Cisco Systems IncCSCO45 funds$3.0B
Alphabet Inc-CL CGOOG44 funds$11.6B
Meta Platforms Inc-Class AMETA44 funds$8.5B
Johnson & JohnsonJNJ44 funds$5.9B
Chevron CorpCVX44 funds$2.7B

Ranked by how many of MMU's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in MMU.

Institutional ownership over time

66 tracked filers in Q2 2026 filingsstill filing
054108Q3 2024Q1 2025Q3 2025Q1 2026Q2 2026
tracked filers holding their reported valueQ2 2026 filings so far: $59.7M · 1 values withheld
Each bar counts tracked filers with a position in that quarter's filings, so the newest bar excludes filers still on an earlier quarter. Arkolith's tracked universe has grown over this window; part of any long-run rise is coverage, not new buyers.

Recent filings

15 most recent

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Connected entities for MMU

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Ask your agent what changed in MMU

This ETF page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.

Copy-paste
curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://arkolith.com/api/v1/stocks/MMU/capital-change-brief"
Ask your agent
Use Arkolith's capital_change_brief for MMU.
Tell me what changed, whether insider activity
corroborates it, and cite the SEC evidence.

13F holdings + quarter-over-quarter ownership changes + end-of-day price history + the live filing stream, joined for MMU. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.