CMU

MFS High Yield Municipal TRETF
UnclassifiedCUSIP 59318E102

Among active 13F managers last quarter, 3 opened and none reduced or exited; the largest holder to move was Guggenheim Capital LLC (new position).

Tracked 13F holders
16
41 in Q1 2026 filings
13F value (tracked)
$7.9M
13F moves · latest Q
3 added
0 reduced

Who owns CMU?

16 tracked 13F filers · ranked by shares held

16 tracked 13F filers disclose a position in CMU as of the latest SEC 13F filings, a combined $7.9M 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 Stanley711K
$2.5M
+81%
Added · +319K sh
Q1 2026
2Bank Of America Corp406K
$1.5M
Held
Q1 2026
3Bank of New York Mellon Corp354K
$1.3M
+11%
Added · +36K sh
Q1 2026
4Guggenheim Capital LLC316K
$1.1M
New
+316K sh
Q1 2026
5UBS Group AG130K
$464K
−46%
Reduced · −109K sh
Q1 2026
6LPL Financial LLC60K
$216K
+0.5%
Added · +323 sh
Q1 2026
7Osaic Holdings, Inc.46K
$165K
−28%
Reduced · −18K sh
Q1 2026
8Raymond James Financial Inc44K
$157K
−8.8%
Reduced · −4K sh
Q1 2026
9Cetera Investment Advisers30K
$108K
Held
Q1 2026
10Rockefeller Capital Management L.P.20K
$72K
Held
Q1 2026
11Mercer Global Advisors Inc19K
$66K
New
+19K sh
Q1 2026
12HighTower Advisors, LLC17K
$62K
New
+17K sh
Q1 2026
13Fisher Asset Management, LLC17K
$60K
New
+17K sh
Q1 2026
14Susquehanna International Group, LLP12K
$42K
−14%
Reduced · −2K sh
Q1 2026
15Wells Fargo & Company10K
$34K
Held
Q1 2026
16Harbour Investments, Inc.2K
$7K
New
+2K sh
Q1 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 CMU being bought or sold by institutions?

Last quarter, 3 funds opened a new position in CMU, while none reduced or exited. Based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).

Opened
3
funds took a first position
Biggest moves · ranked by size of the change, positions above a floor

Funds that own CMU also own

CompanyCo-held byTheir position there
Nvidia CorpNVDA3 funds$16.0B
Apple IncAAPL3 funds$14.8B
Alphabet Inc-CL AGOOGL3 funds$11.5B
Microsoft CorpMSFT3 funds$9.9B
Vanguard Int-Term CorporateVCIT3 funds$7.4B
Amazon.com IncAMZN3 funds$7.4B
Caterpillar IncCAT3 funds$7.0B
Taiwan Semiconductor-SP ADRTSM3 funds$6.3B
ASML Holding NV-NY Reg SHSASML3 funds$6.1B
Goldman Sachs Group IncGS3 funds$5.8B
ExxonMobil Holdings CorpXOM3 funds$5.6B
Walmart IncWMT3 funds$5.3B

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

Institutional ownership over time

41 tracked filers in Q1 2026 filings+5 vs Q4 2025
02141Q3 2024Q1 2025Q3 2025Q1 2026
tracked filers holding their reported valueQ1 2026 filings: $30.1M
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 CMU

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Ask your agent what changed in CMU

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/CMU/capital-change-brief"
Ask your agent
Use Arkolith's capital_change_brief for CMU.
Tell me what changed, whether insider activity
corroborates it, and cite the SEC evidence.

13F holdings + quarter-over-quarter ownership changes + the live filing stream, joined for CMU. Filings are public domain, sourced to SEC EDGAR.